vco.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Amplifier_Operational:LM13700 U?
U 1 1 5EC5CE80
P 1200 1250
F 0 "U?" H 1200 1617 50  0000 C CNN
F 1 "DG403" H 1200 1526 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 900 1275 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 900 1275 50  0001 C CNN
	1    1200 1250
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM13700 U?
U 5 1 5EC5DDDC
P 10300 1100
F 0 "U?" H 10258 1146 50  0000 L CNN
F 1 "DG403" H 10258 1055 50  0000 L CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 10000 1125 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 10000 1125 50  0001 C CNN
	5    10300 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 5EC5F370
P 1800 1450
F 0 "C?" H 1915 1496 50  0000 L CNN
F 1 "4.7n" H 1915 1405 50  0000 L CNN
F 2 "" H 1838 1300 50  0001 C CNN
F 3 "~" H 1800 1450 50  0001 C CNN
	1    1800 1450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5EC5FE26
P 1800 1650
F 0 "#PWR?" H 1800 1400 50  0001 C CNN
F 1 "GND" H 1805 1477 50  0000 C CNN
F 2 "" H 1800 1650 50  0001 C CNN
F 3 "" H 1800 1650 50  0001 C CNN
	1    1800 1650
	1    0    0    -1  
$EndComp
Wire Wire Line
	750  1350 900  1350
$Comp
L power:-12V #PWR?
U 1 1 5EC69D7B
P 10200 1500
F 0 "#PWR?" H 10200 1600 50  0001 C CNN
F 1 "-12V" H 10215 1673 50  0000 C CNN
F 2 "" H 10200 1500 50  0001 C CNN
F 3 "" H 10200 1500 50  0001 C CNN
	1    10200 1500
	-1   0    0    1   
$EndComp
$Comp
L Amplifier_Operational:TL072 U?
U 3 1 5EC75ED9
P 10900 1100
F 0 "U?" H 10858 1146 50  0000 L CNN
F 1 "DG403" H 10858 1055 50  0000 L CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 10900 1100 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 10900 1100 50  0001 C CNN
	3    10900 1100
	1    0    0    -1  
$EndComp
Wire Wire Line
	10200 1500 10200 1450
Wire Wire Line
	10200 1450 10800 1450
Wire Wire Line
	10800 1450 10800 1400
Connection ~ 10200 1450
Wire Wire Line
	10200 1450 10200 1400
Wire Wire Line
	10200 800  10200 750 
Wire Wire Line
	10200 750  10800 750 
Wire Wire Line
	10800 750  10800 800 
Connection ~ 10200 750 
Wire Wire Line
	10200 750  10200 650 
$Comp
L power:GND #PWR?
U 1 1 5ECB4989
P 600 1250
F 0 "#PWR?" H 600 1000 50  0001 C CNN
F 1 "GND" H 605 1077 50  0000 C CNN
F 2 "" H 600 1250 50  0001 C CNN
F 3 "" H 600 1250 50  0001 C CNN
	1    600  1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	600  1250 600  1150
Wire Wire Line
	600  1150 900  1150
$Comp
L synth:DMMT5401 Q?
U 1 1 5ECB91CA
P 2950 4400
F 0 "Q?" H 2800 4550 50  0000 L CNN
F 1 "DMMT5401" V 3150 4200 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 3150 4325 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30437.pdf" H 2950 4400 50  0001 L CNN
	1    2950 4400
	1    0    0    -1  
$EndComp
$Comp
L synth:DMMT5401 Q?
U 2 1 5ECB9C8A
P 3600 4400
F 0 "Q?" H 3450 4550 50  0000 L CNN
F 1 "DMMT5401" V 3800 4200 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 3800 4325 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30437.pdf" H 3600 4400 50  0001 L CNN
	2    3600 4400
	-1   0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5ECC5F0B
P 3500 4950
F 0 "R?" H 3300 5000 50  0000 L CNN
F 1 "4.7K" V 3500 4850 50  0000 L CNN
F 2 "" V 3430 4950 50  0001 C CNN
F 3 "~" H 3500 4950 50  0001 C CNN
	1    3500 4950
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 5ECC9350
P 2950 4850
F 0 "C?" H 3065 4896 50  0000 L CNN
F 1 "30p" H 3065 4805 50  0000 L CNN
F 2 "" H 2988 4700 50  0001 C CNN
F 3 "~" H 2950 4850 50  0001 C CNN
	1    2950 4850
	0    1    1    0   
$EndComp
Wire Wire Line
	2650 5150 2600 5150
Wire Wire Line
	2600 5150 2600 4850
Wire Wire Line
	2600 4850 2800 4850
Wire Wire Line
	3100 4850 3350 4850
Wire Wire Line
	3350 4850 3350 5250
Wire Wire Line
	3350 5250 3250 5250
Wire Wire Line
	3350 5250 3500 5250
Wire Wire Line
	3500 5250 3500 5100
Connection ~ 3350 5250
Wire Wire Line
	3500 4800 3500 4700
Wire Wire Line
	3050 4600 3050 4700
Wire Wire Line
	3050 4700 3500 4700
Connection ~ 3500 4700
Wire Wire Line
	3500 4700 3500 4600
$Comp
L power:GND #PWR?
U 1 1 5ECD1F6B
P 3900 4500
F 0 "#PWR?" H 3900 4250 50  0001 C CNN
F 1 "GND" H 3905 4327 50  0000 C CNN
F 2 "" H 3900 4500 50  0001 C CNN
F 3 "" H 3900 4500 50  0001 C CNN
	1    3900 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3900 4500 3900 4400
Wire Wire Line
	3900 4400 3800 4400
$Comp
L Amplifier_Operational:TL072 U?
U 3 1 5ECDA6BE
P 9650 1050
F 0 "U?" H 9608 1096 50  0000 L CNN
F 1 "DG403" H 9608 1005 50  0000 L CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 9650 1050 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 9650 1050 50  0001 C CNN
	3    9650 1050
	1    0    0    -1  
$EndComp
Wire Wire Line
	2750 4400 2300 4400
$Comp
L power:GND #PWR?
U 1 1 5ECE1050
P 2550 5450
F 0 "#PWR?" H 2550 5200 50  0001 C CNN
F 1 "GND" H 2555 5277 50  0000 C CNN
F 2 "" H 2550 5450 50  0001 C CNN
F 3 "" H 2550 5450 50  0001 C CNN
	1    2550 5450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2550 5450 2550 5350
Wire Wire Line
	2550 5350 2650 5350
$Comp
L power:GND #PWR?
U 1 1 5ECE3480
P 1500 4600
F 0 "#PWR?" H 1500 4350 50  0001 C CNN
F 1 "GND" H 1505 4427 50  0000 C CNN
F 2 "" H 1500 4600 50  0001 C CNN
F 3 "" H 1500 4600 50  0001 C CNN
	1    1500 4600
	1    0    0    -1  
$EndComp
Wire Wire Line
	1500 4600 1500 4500
Wire Wire Line
	1500 4500 1600 4500
$Comp
L Device:R R?
U 1 1 5ECE5DFE
P 1900 4000
F 0 "R?" V 2000 4050 50  0000 L CNN
F 1 "1K8" V 1900 3950 50  0000 L CNN
F 2 "" V 1830 4000 50  0001 C CNN
F 3 "~" H 1900 4000 50  0001 C CNN
	1    1900 4000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2050 4000 2300 4000
Wire Wire Line
	2300 4000 2300 4400
Connection ~ 2300 4400
Wire Wire Line
	2300 4400 2200 4400
Wire Wire Line
	1750 4000 1500 4000
Wire Wire Line
	1500 4300 1600 4300
$Comp
L Device:R R?
U 1 1 5ECEAD7D
P 1200 4300
F 0 "R?" V 1300 4250 50  0000 L CNN
F 1 "100K" V 1200 4200 50  0000 L CNN
F 2 "" V 1130 4300 50  0001 C CNN
F 3 "~" H 1200 4300 50  0001 C CNN
	1    1200 4300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1350 4300 1450 4300
Connection ~ 1500 4300
Wire Wire Line
	3050 4200 3050 3950
Wire Wire Line
	3050 3950 2600 3950
Wire Wire Line
	2600 3950 2600 4850
Connection ~ 2600 4850
$Comp
L Device:R R?
U 1 1 5ECF084A
P 2300 5350
F 0 "R?" H 2100 5400 50  0000 L CNN
F 1 "270K" V 2300 5250 50  0000 L CNN
F 2 "" V 2230 5350 50  0001 C CNN
F 3 "~" H 2300 5350 50  0001 C CNN
	1    2300 5350
	-1   0    0    1   
$EndComp
Wire Wire Line
	2300 5200 2300 5150
Wire Wire Line
	2300 5150 2600 5150
Connection ~ 2600 5150
Wire Wire Line
	2300 5600 2300 5500
Text Notes 2000 2050 0    50   ~ 0
Square/Triangle core
Text Notes 2950 5650 0    50   ~ 0
exponential converter
$Comp
L synth:DMMT5551 Q?
U 1 1 5ED0A71C
P 5750 6100
F 0 "Q?" H 5600 6250 50  0000 L CNN
F 1 "DMMT5551" V 5950 5900 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 5950 6025 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30436.pdf" H 5750 6100 50  0001 L CNN
	1    5750 6100
	1    0    0    -1  
$EndComp
$Comp
L synth:DMMT5551 Q?
U 2 1 5ED0B584
P 6750 6100
F 0 "Q?" H 6600 6250 50  0000 L CNN
F 1 "DMMT5551" V 6950 5900 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 6950 6025 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30436.pdf" H 6750 6100 50  0001 L CNN
	2    6750 6100
	-1   0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5ED0F0FD
P 6250 7050
F 0 "R?" H 6350 7100 50  0000 L CNN
F 1 "10K" H 6350 7000 50  0000 L CNN
F 2 "" V 6180 7050 50  0001 C CNN
F 3 "~" H 6250 7050 50  0001 C CNN
	1    6250 7050
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5ED14F24
P 7050 6200
F 0 "#PWR?" H 7050 5950 50  0001 C CNN
F 1 "GND" H 7055 6027 50  0000 C CNN
F 2 "" H 7050 6200 50  0001 C CNN
F 3 "" H 7050 6200 50  0001 C CNN
	1    7050 6200
	1    0    0    -1  
$EndComp
Wire Wire Line
	7050 6200 7050 6100
Wire Wire Line
	7050 6100 6950 6100
Text GLabel 2550 800  2    50   Input ~ 0
TRIANGLE
Text GLabel 3850 6000 0    50   Input ~ 0
TRIANGLE
Text GLabel 2800 6900 2    50   Input ~ 0
SQUARE
$Comp
L power:+12V #PWR?
U 1 1 5EC69673
P 10200 650
F 0 "#PWR?" H 10200 500 50  0001 C CNN
F 1 "+12V" H 10215 823 50  0000 C CNN
F 2 "" H 10200 650 50  0001 C CNN
F 3 "" H 10200 650 50  0001 C CNN
	1    10200 650 
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5ECF6305
P 2300 6000
F 0 "#PWR?" H 2300 6100 50  0001 C CNN
F 1 "-12V" H 2300 6150 50  0000 C CNN
F 2 "" H 2300 6000 50  0001 C CNN
F 3 "" H 2300 6000 50  0001 C CNN
	1    2300 6000
	-1   0    0    1   
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5ED5C312
P 6250 7300
F 0 "#PWR?" H 6250 7400 50  0001 C CNN
F 1 "-12V" H 6265 7473 50  0000 C CNN
F 2 "" H 6250 7300 50  0001 C CNN
F 3 "" H 6250 7300 50  0001 C CNN
	1    6250 7300
	-1   0    0    1   
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 5ED7F3FD
P 6250 4700
F 0 "#PWR?" H 6250 4550 50  0001 C CNN
F 1 "+12V" H 6265 4873 50  0000 C CNN
F 2 "" H 6250 4700 50  0001 C CNN
F 3 "" H 6250 4700 50  0001 C CNN
	1    6250 4700
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5ECD7F4D
P 1900 4400
F 0 "U?" H 2000 4550 50  0000 C CNN
F 1 "TL072" H 1900 4400 50  0000 C CNN
F 2 "" H 1900 4400 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 1900 4400 50  0001 C CNN
	2    1900 4400
	1    0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 5EEC9A14
P 6650 6550
F 0 "R?" H 6750 6600 50  0000 L CNN
F 1 "68" H 6750 6500 50  0000 L CNN
F 2 "" V 6580 6550 50  0001 C CNN
F 3 "~" H 6650 6550 50  0001 C CNN
	1    6650 6550
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5EF3BB3D
P 7750 5900
F 0 "U?" H 7850 6050 50  0000 C CNN
F 1 "TL072" H 7750 5900 50  0000 C CNN
F 2 "" H 7750 5900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 7750 5900 50  0001 C CNN
	2    7750 5900
	1    0    0    1   
$EndComp
Wire Wire Line
	7350 6100 7350 6000
Wire Wire Line
	7350 6000 7450 6000
Wire Wire Line
	7350 5800 7350 5500
Wire Wire Line
	7350 5500 7650 5500
Connection ~ 7350 5800
Wire Wire Line
	7350 5800 7450 5800
Wire Wire Line
	7950 5500 8150 5500
Wire Wire Line
	8150 5500 8150 5900
Wire Wire Line
	8150 5900 8050 5900
$Comp
L power:GND #PWR?
U 1 1 5EF7B608
P 7350 6100
F 0 "#PWR?" H 7350 5850 50  0001 C CNN
F 1 "GND" H 7355 5927 50  0000 C CNN
F 2 "" H 7350 6100 50  0001 C CNN
F 3 "" H 7350 6100 50  0001 C CNN
	1    7350 6100
	1    0    0    -1  
$EndComp
Text Notes 4850 6650 0    50   ~ 0
sine waveshapper
Text GLabel 8250 5900 2    50   Input ~ 0
SINE
Wire Wire Line
	8250 5900 8150 5900
Connection ~ 8150 5900
$Comp
L Device:R R?
U 1 1 5ED74B78
P 3050 1550
F 0 "R?" H 3150 1650 50  0000 L CNN
F 1 "150k" H 3150 1500 50  0000 L CNN
F 2 "" V 2980 1550 50  0001 C CNN
F 3 "~" H 3050 1550 50  0001 C CNN
	1    3050 1550
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5ED74FEC
P 3050 2000
F 0 "R?" H 3150 2050 50  0000 L CNN
F 1 "100k" H 3150 1950 50  0000 L CNN
F 2 "" V 2980 2000 50  0001 C CNN
F 3 "~" H 3050 2000 50  0001 C CNN
	1    3050 2000
	1    0    0    -1  
$EndComp
Text Notes 3600 2750 1    50   ~ 0
These set the level of the signal to about +/- 5V\nwhich is the absolute max from the LM13700 datasheet\nand also the standard level for signals
$Comp
L power:GND #PWR?
U 1 1 5ED7642B
P 12400 2650
F 0 "#PWR?" H 12400 2400 50  0001 C CNN
F 1 "GND" H 12405 2477 50  0000 C CNN
F 2 "" H 12400 2650 50  0001 C CNN
F 3 "" H 12400 2650 50  0001 C CNN
	1    12400 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3050 1850 3050 1800
Wire Wire Line
	3050 1400 3050 1350
Wire Wire Line
	3050 1350 2850 1350
Wire Wire Line
	3050 1800 2150 1800
Wire Wire Line
	2150 1450 2250 1450
Connection ~ 3050 1800
Wire Wire Line
	3050 1800 3050 1700
Wire Wire Line
	2150 1800 2150 1450
Wire Wire Line
	1500 1250 1700 1250
Wire Wire Line
	1800 1650 1800 1600
Wire Wire Line
	1800 1300 1800 1250
Wire Wire Line
	750  1350 750  1800
Connection ~ 1800 1250
Wire Wire Line
	2150 1800 750  1800
Connection ~ 2150 1800
Text Notes 1400 1400 3    50   ~ 0
IABC calculated to 1.191mA for A9 with 4.7nF
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5EDCCCBC
P 2050 800
F 0 "U?" H 2150 950 50  0000 C CNN
F 1 "TL072" H 2000 800 50  0000 C CNN
F 2 "" H 2050 800 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 2050 800 50  0001 C CNN
	2    2050 800 
	1    0    0    1   
$EndComp
Wire Wire Line
	2350 800  2400 800 
Wire Wire Line
	2400 800  2400 500 
Wire Wire Line
	2400 500  1700 500 
Wire Wire Line
	1700 500  1700 700 
Wire Wire Line
	1700 700  1750 700 
Connection ~ 2400 800 
$Comp
L Device:R R?
U 1 1 5EE0590C
P 2700 6700
F 0 "R?" H 2800 6750 50  0000 L CNN
F 1 "15k" H 2800 6650 50  0000 L CNN
F 2 "" V 2630 6700 50  0001 C CNN
F 3 "~" H 2700 6700 50  0001 C CNN
	1    2700 6700
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5EE05F24
P 2700 7150
F 0 "R?" H 2800 7200 50  0000 L CNN
F 1 "10k" H 2800 7100 50  0000 L CNN
F 2 "" V 2630 7150 50  0001 C CNN
F 3 "~" H 2700 7150 50  0001 C CNN
	1    2700 7150
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5EE06527
P 2700 7400
F 0 "#PWR?" H 2700 7150 50  0001 C CNN
F 1 "GND" H 2705 7227 50  0000 C CNN
F 2 "" H 2700 7400 50  0001 C CNN
F 3 "" H 2700 7400 50  0001 C CNN
	1    2700 7400
	1    0    0    -1  
$EndComp
Wire Wire Line
	2700 7300 2700 7400
Wire Wire Line
	2700 7000 2700 6900
Wire Wire Line
	2700 6550 2700 6450
Wire Wire Line
	2700 6450 2550 6450
$Comp
L Device:R R?
U 1 1 5EE19BD3
P 1300 6800
F 0 "R?" H 1100 6850 50  0000 L CNN
F 1 "100K" H 1050 6750 50  0000 L CNN
F 2 "" V 1230 6800 50  0001 C CNN
F 3 "~" H 1300 6800 50  0001 C CNN
	1    1300 6800
	1    0    0    -1  
$EndComp
Wire Wire Line
	2400 800  2550 800 
$Comp
L Device:R R?
U 1 1 5EE2F627
P 1300 6350
F 0 "R?" H 1100 6400 50  0000 L CNN
F 1 "100K" H 1050 6300 50  0000 L CNN
F 2 "" V 1230 6350 50  0001 C CNN
F 3 "~" H 1300 6350 50  0001 C CNN
	1    1300 6350
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 6650 1300 6550
Wire Wire Line
	1950 6550 1300 6550
Connection ~ 1300 6550
Wire Wire Line
	1300 6550 1300 6500
Wire Wire Line
	1300 7050 1300 6950
Text GLabel 1150 6000 0    50   Input ~ 0
PWM_CV
Wire Wire Line
	1150 6000 1300 6000
Wire Wire Line
	1300 6000 1300 6200
Text GLabel 1800 6350 0    50   Input ~ 0
TRIANGLE
Text GLabel 1600 2000 3    50   Input ~ 0
I_ABC
Wire Wire Line
	1600 2000 1600 1350
Wire Wire Line
	1600 1350 1500 1350
Text GLabel 3500 3950 1    50   Input ~ 0
I_ABC
Wire Wire Line
	3500 3950 3500 4200
Wire Wire Line
	2800 6900 2700 6900
Connection ~ 2700 6900
Wire Wire Line
	2700 6900 2700 6850
Wire Wire Line
	6250 7300 6250 7200
$Comp
L Device:R R?
U 1 1 5EE5FE30
P 4900 5550
F 0 "R?" V 4800 5500 50  0000 L CNN
F 1 "22K" V 4900 5500 50  0000 L CNN
F 2 "" V 4830 5550 50  0001 C CNN
F 3 "~" H 4900 5550 50  0001 C CNN
	1    4900 5550
	0    -1   1    0   
$EndComp
$Comp
L synth:DMMT5401 Q?
U 1 1 5EE8FFF2
P 5950 5350
F 0 "Q?" H 6141 5304 50  0000 L CNN
F 1 "DMMT5401" H 6141 5395 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 6150 5275 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30437.pdf" H 5950 5350 50  0001 L CNN
	1    5950 5350
	-1   0    0    1   
$EndComp
$Comp
L synth:DMMT5401 Q?
U 2 1 5EE91D95
P 6550 5350
F 0 "Q?" H 6741 5304 50  0000 L CNN
F 1 "DMMT5401" H 6741 5395 50  0000 L CNN
F 2 "KiCad/kicad-footprints/Package_TO_SOT_SMD.pretty:SOT-23-6" H 6750 5275 50  0001 L CIN
F 3 "https://www.diodes.com/assets/Datasheets/ds30437.pdf" H 6550 5350 50  0001 L CNN
	2    6550 5350
	1    0    0    1   
$EndComp
Wire Wire Line
	6650 5900 6650 5800
Wire Wire Line
	5850 5150 5850 4950
Wire Wire Line
	5850 5550 5850 5650
Wire Wire Line
	6150 5350 6250 5350
Wire Wire Line
	6250 5350 6250 5650
Wire Wire Line
	6250 5650 5850 5650
Connection ~ 6250 5350
Wire Wire Line
	6250 5350 6350 5350
Wire Wire Line
	6650 6400 6650 6300
Wire Wire Line
	5850 6400 5850 6300
Wire Wire Line
	5850 6700 5850 6800
Wire Wire Line
	5850 6800 6250 6800
Wire Wire Line
	6650 6800 6650 6700
Wire Wire Line
	6250 6900 6250 6800
Connection ~ 6250 6800
Wire Wire Line
	6250 6800 6650 6800
Wire Wire Line
	5850 5900 5850 5650
Connection ~ 5850 5650
Wire Wire Line
	6650 5800 7350 5800
Connection ~ 6650 5800
Wire Wire Line
	6650 5800 6650 5550
Wire Wire Line
	3850 6000 3950 6000
Wire Wire Line
	4450 6200 4550 6200
Wire Wire Line
	4550 6000 4400 6000
Wire Wire Line
	4400 6000 4400 5550
Wire Wire Line
	4400 5550 4750 5550
Wire Wire Line
	5050 5550 5300 5550
Wire Wire Line
	5300 5550 5300 6100
Wire Wire Line
	5300 6100 5150 6100
Connection ~ 4400 6000
Wire Wire Line
	5550 6100 5300 6100
Connection ~ 5300 6100
Wire Wire Line
	1800 6350 1950 6350
$Comp
L MCU_Microchip_ATtiny:ATtiny85V-10PU U?
U 1 1 5F04221D
P 13050 700
F 0 "U?" H 12520 746 50  0000 R CNN
F 1 "ATTINY85" H 12520 655 50  0000 R CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 13050 700 50  0001 C CIN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 13050 700 50  0001 C CNN
	1    13050 700 
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5F08299D
P 12400 2400
F 0 "R?" H 12200 2450 50  0000 L CNN
F 1 "10K" H 12150 2350 50  0000 L CNN
F 2 "" V 12330 2400 50  0001 C CNN
F 3 "~" H 12400 2400 50  0001 C CNN
	1    12400 2400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	12400 2650 12400 2550
Wire Wire Line
	12400 2200 12400 2250
Text GLabel 12300 2200 0    50   Input ~ 0
SQUARE_EN
Wire Wire Line
	12300 2200 12400 2200
$Comp
L power:GND #PWR?
U 1 1 5F1156A6
P 13050 1450
F 0 "#PWR?" H 13050 1200 50  0001 C CNN
F 1 "GND" H 13055 1277 50  0000 C CNN
F 2 "" H 13050 1450 50  0001 C CNN
F 3 "" H 13050 1450 50  0001 C CNN
	1    13050 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	13050 1300 13050 1450
Text GLabel 13750 800  2    50   Input ~ 0
SQUARE_EN
Text GLabel 13750 500  2    50   Input ~ 0
TRIANGLE_EN
Text GLabel 13750 400  2    50   Input ~ 0
SINE_EN
Text Notes 13250 1650 0    50   ~ 0
Rather than using a bunch of digital chips\nto convert an analog CV into a binned selector,\nprogramming a tiny uC requires only one IC and\nhas easy support for changing the bin size and\nadding hysteresis
$Comp
L power:GND #PWR?
U 1 1 5EE3F569
P 1300 7050
F 0 "#PWR?" H 1300 6800 50  0001 C CNN
F 1 "GND" H 1305 6877 50  0000 C CNN
F 2 "" H 1300 7050 50  0001 C CNN
F 3 "" H 1300 7050 50  0001 C CNN
	1    1300 7050
	1    0    0    -1  
$EndComp
Text Notes 2450 7500 2    50   ~ 0
PWM control\nvia adjusting reference voltage of comparator\nTODO this is a pretty janky way to do this
Text Notes 1850 3950 0    50   ~ 0
tempco\nthermally connected to bjts
Text GLabel 950  4300 0    50   Input ~ 0
PITCH_CV
Wire Wire Line
	950  4300 1050 4300
Text Notes 2250 3150 0    50   ~ 0
This compensates for the comparator imbalance\nbetween positive and negative
$Comp
L Device:R R?
U 1 1 5F589D95
P 2100 2600
F 0 "R?" V 2200 2550 50  0000 L CNN
F 1 "10K" V 2100 2500 50  0000 L CNN
F 2 "" V 2030 2600 50  0001 C CNN
F 3 "~" H 2100 2600 50  0001 C CNN
	1    2100 2600
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5F58A84E
P 2100 3300
F 0 "R?" V 2200 3250 50  0000 L CNN
F 1 "10K" V 2100 3200 50  0000 L CNN
F 2 "" V 2030 3300 50  0001 C CNN
F 3 "~" H 2100 3300 50  0001 C CNN
	1    2100 3300
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5F58C1BB
P 2100 2950
F 0 "RV?" H 2030 2996 50  0000 R CNN
F 1 "1K" H 2030 2905 50  0000 R CNN
F 2 "" H 2100 2950 50  0001 C CNN
F 3 "~" H 2100 2950 50  0001 C CNN
	1    2100 2950
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 5F58CE2B
P 2100 2400
F 0 "#PWR?" H 2100 2250 50  0001 C CNN
F 1 "+12V" H 2115 2573 50  0000 C CNN
F 2 "" H 2100 2400 50  0001 C CNN
F 3 "" H 2100 2400 50  0001 C CNN
	1    2100 2400
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5F58D458
P 2100 3500
F 0 "#PWR?" H 2100 3600 50  0001 C CNN
F 1 "-12V" H 2115 3673 50  0000 C CNN
F 2 "" H 2100 3500 50  0001 C CNN
F 3 "" H 2100 3500 50  0001 C CNN
	1    2100 3500
	-1   0    0    1   
$EndComp
Wire Wire Line
	2100 3500 2100 3450
Wire Wire Line
	2100 3150 2100 3100
Wire Wire Line
	2100 2800 2100 2750
Wire Wire Line
	2100 2400 2100 2450
Wire Wire Line
	2250 2950 3050 2950
Wire Wire Line
	3050 2150 3050 2950
Wire Wire Line
	1800 1250 2250 1250
Wire Wire Line
	1750 900  1700 900 
Wire Wire Line
	1700 900  1700 1250
Connection ~ 1700 1250
Wire Wire Line
	1700 1250 1800 1250
$Comp
L Device:R R?
U 1 1 5F607EE9
P 1200 4500
F 0 "R?" V 1300 4450 50  0000 L CNN
F 1 "220K" V 1200 4400 50  0000 L CNN
F 2 "" V 1130 4500 50  0001 C CNN
F 3 "~" H 1200 4500 50  0001 C CNN
	1    1200 4500
	0    -1   -1   0   
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5F60854B
P 850 4950
F 0 "#PWR?" H 850 5050 50  0001 C CNN
F 1 "-12V" H 865 5123 50  0000 C CNN
F 2 "" H 850 4950 50  0001 C CNN
F 3 "" H 850 4950 50  0001 C CNN
	1    850  4950
	-1   0    0    1   
$EndComp
Wire Wire Line
	1350 4500 1450 4500
Wire Wire Line
	1450 4500 1450 4300
Connection ~ 1450 4300
Wire Wire Line
	1450 4300 1500 4300
Text Notes 950  5050 0    50   ~ 0
subtract 5V so 0 to 10V\nbecomes -5 to 5V\ncalculated: 240K
$Comp
L Device:RTRIM R?
U 1 1 5F632A48
P 850 4700
F 0 "R?" H 978 4746 50  0000 L CNN
F 1 "50K" H 978 4655 50  0000 L CNN
F 2 "" V 780 4700 50  0001 C CNN
F 3 "~" H 850 4700 50  0001 C CNN
	1    850  4700
	1    0    0    -1  
$EndComp
Wire Wire Line
	850  4950 850  4850
Wire Wire Line
	850  4550 850  4500
Wire Wire Line
	850  4500 1050 4500
Wire Wire Line
	2300 6000 2300 5900
Text Notes 2200 5750 1    50   ~ 0
Calc: 326K
$Comp
L Device:RTRIM R?
U 1 1 5F6623F8
P 2300 5750
F 0 "R?" H 2428 5796 50  0000 L CNN
F 1 "100K" H 2428 5705 50  0000 L CNN
F 2 "" V 2230 5750 50  0001 C CNN
F 3 "~" H 2300 5750 50  0001 C CNN
	1    2300 5750
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 5F773D5B
P 14550 600
F 0 "RV?" H 14480 646 50  0000 R CNN
F 1 "100K" H 14480 555 50  0000 R CNN
F 2 "" H 14550 600 50  0001 C CNN
F 3 "~" H 14550 600 50  0001 C CNN
	1    14550 600 
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F77D466
P 14550 850
F 0 "#PWR?" H 14550 600 50  0001 C CNN
F 1 "GND" H 14555 677 50  0000 C CNN
F 2 "" H 14550 850 50  0001 C CNN
F 3 "" H 14550 850 50  0001 C CNN
	1    14550 850 
	1    0    0    -1  
$EndComp
Wire Wire Line
	14550 850  14550 750 
$Comp
L synth:EURORACK_CONN_16 J?
U 1 1 5F786BAE
P 8550 1100
F 0 "J?" H 8630 1096 50  0000 L CNN
F 1 "EURORACK_CONN_16" H 8630 1005 50  0000 L CNN
F 2 "synth:EURORACK_16_IDC" H 9000 400 50  0001 C CNN
F 3 "https://division-6.com/learn/eurorack-power/" V 8600 1150 50  0001 C CNN
	1    8550 1100
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 5F79028F
P 8500 1550
F 0 "#PWR?" H 8500 1650 50  0001 C CNN
F 1 "-12V" H 8515 1723 50  0000 C CNN
F 2 "" H 8500 1550 50  0001 C CNN
F 3 "" H 8500 1550 50  0001 C CNN
	1    8500 1550
	-1   0    0    1   
$EndComp
Wire Wire Line
	8500 1550 8500 1450
$Comp
L power:+12V #PWR?
U 1 1 5F798DF3
P 8500 700
F 0 "#PWR?" H 8500 550 50  0001 C CNN
F 1 "+12V" H 8515 873 50  0000 C CNN
F 2 "" H 8500 700 50  0001 C CNN
F 3 "" H 8500 700 50  0001 C CNN
	1    8500 700 
	1    0    0    -1  
$EndComp
Text GLabel 16450 3650 2    50   Input ~ 0
OUTPUT
Text GLabel 12300 3000 0    50   Input ~ 0
SQUARE
Wire Wire Line
	12400 3000 12300 3000
Wire Wire Line
	8500 700  8500 850 
$Comp
L power:GND #PWR?
U 1 1 5F7ABBC4
P 8200 1550
F 0 "#PWR?" H 8200 1300 50  0001 C CNN
F 1 "GND" H 8205 1377 50  0000 C CNN
F 2 "" H 8200 1550 50  0001 C CNN
F 3 "" H 8200 1550 50  0001 C CNN
	1    8200 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	8200 1450 8200 1550
$Comp
L power:+5V #PWR?
U 1 1 5F7B6934
P 8250 700
F 0 "#PWR?" H 8250 550 50  0001 C CNN
F 1 "+5V" H 8265 873 50  0000 C CNN
F 2 "" H 8250 700 50  0001 C CNN
F 3 "" H 8250 700 50  0001 C CNN
	1    8250 700 
	1    0    0    -1  
$EndComp
Wire Wire Line
	8250 700  8250 850 
$Comp
L synth:DG403 U?
U 1 1 5F83B474
P 12700 3200
F 0 "U?" H 12700 3333 50  0000 C CNN
F 1 "DG403" H 12700 3424 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 12700 2500 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 12700 3200 50  0001 C CNN
	1    12700 3200
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F87CF46
P 12300 3300
F 0 "#PWR?" H 12300 3050 50  0001 C CNN
F 1 "GND" H 12305 3127 50  0000 C CNN
F 2 "" H 12300 3300 50  0001 C CNN
F 3 "" H 12300 3300 50  0001 C CNN
	1    12300 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	12300 3300 12300 3200
Wire Wire Line
	12300 3200 12400 3200
Wire Wire Line
	12700 2700 12700 2200
Wire Wire Line
	12700 2200 12400 2200
Connection ~ 12400 2200
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5F88EDB3
P 15950 3650
F 0 "U?" H 16050 3800 50  0000 C CNN
F 1 "TL072" H 15950 3650 50  0000 C CNN
F 2 "" H 15950 3650 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 15950 3650 50  0001 C CNN
	2    15950 3650
	1    0    0    1   
$EndComp
Wire Wire Line
	16250 3650 16350 3650
$Comp
L Device:R R?
U 1 1 5F8A089C
P 16050 3250
F 0 "R?" H 15850 3300 50  0000 L CNN
F 1 "10K" H 15800 3200 50  0000 L CNN
F 2 "" V 15980 3250 50  0001 C CNN
F 3 "~" H 16050 3250 50  0001 C CNN
	1    16050 3250
	0    1    -1   0   
$EndComp
Wire Wire Line
	16200 3250 16350 3250
Wire Wire Line
	16350 3250 16350 3650
Connection ~ 16350 3650
Wire Wire Line
	16350 3650 16450 3650
Wire Wire Line
	15900 3250 15550 3250
Wire Wire Line
	15550 3250 15550 3550
Wire Wire Line
	15550 3550 15650 3550
$Comp
L power:GND #PWR?
U 1 1 5F8B36CE
P 15500 3850
F 0 "#PWR?" H 15500 3600 50  0001 C CNN
F 1 "GND" H 15505 3677 50  0000 C CNN
F 2 "" H 15500 3850 50  0001 C CNN
F 3 "" H 15500 3850 50  0001 C CNN
	1    15500 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	15500 3850 15500 3750
Wire Wire Line
	15500 3750 15650 3750
$Comp
L Device:R R?
U 1 1 5F8BD439
P 13300 3100
F 0 "R?" H 13100 3150 50  0000 L CNN
F 1 "10K" H 13050 3050 50  0000 L CNN
F 2 "" V 13230 3100 50  0001 C CNN
F 3 "~" H 13300 3100 50  0001 C CNN
	1    13300 3100
	0    -1   1    0   
$EndComp
Wire Wire Line
	13150 3000 13000 3000
Wire Wire Line
	13000 3100 13150 3100
Connection ~ 13150 3100
Wire Wire Line
	13150 3100 13150 3000
$Comp
L power:GND #PWR?
U 1 1 5F8F4804
P 12400 4150
F 0 "#PWR?" H 12400 3900 50  0001 C CNN
F 1 "GND" H 12405 3977 50  0000 C CNN
F 2 "" H 12400 4150 50  0001 C CNN
F 3 "" H 12400 4150 50  0001 C CNN
	1    12400 4150
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5F8F480E
P 12400 3900
F 0 "R?" H 12200 3950 50  0000 L CNN
F 1 "10K" H 12150 3850 50  0000 L CNN
F 2 "" V 12330 3900 50  0001 C CNN
F 3 "~" H 12400 3900 50  0001 C CNN
	1    12400 3900
	-1   0    0    -1  
$EndComp
Wire Wire Line
	12400 4150 12400 4050
Wire Wire Line
	12400 3700 12400 3750
Text GLabel 11750 3700 0    50   Input ~ 0
TRIANGLE_EN
Wire Wire Line
	12300 3700 12400 3700
Text GLabel 12300 4500 0    50   Input ~ 0
TRIANGLE
Wire Wire Line
	12400 4500 12300 4500
$Comp
L synth:DG403 U?
U 2 1 5F8F481E
P 12700 4700
F 0 "U?" H 12700 4833 50  0000 C CNN
F 1 "DG403" H 12700 4924 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 12700 4000 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 12700 4700 50  0001 C CNN
	2    12700 4700
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F8F4828
P 12300 4800
F 0 "#PWR?" H 12300 4550 50  0001 C CNN
F 1 "GND" H 12305 4627 50  0000 C CNN
F 2 "" H 12300 4800 50  0001 C CNN
F 3 "" H 12300 4800 50  0001 C CNN
	1    12300 4800
	1    0    0    -1  
$EndComp
Wire Wire Line
	12300 4800 12300 4700
Wire Wire Line
	12300 4700 12400 4700
Wire Wire Line
	12700 4200 12700 3700
Wire Wire Line
	12700 3700 12400 3700
Connection ~ 12400 3700
$Comp
L Device:R R?
U 1 1 5F8F4837
P 13300 4600
F 0 "R?" H 13100 4650 50  0000 L CNN
F 1 "10K" H 13050 4550 50  0000 L CNN
F 2 "" V 13230 4600 50  0001 C CNN
F 3 "~" H 13300 4600 50  0001 C CNN
	1    13300 4600
	0    -1   1    0   
$EndComp
Wire Wire Line
	13150 4500 13000 4500
Wire Wire Line
	13000 4600 13150 4600
Connection ~ 13150 4600
Wire Wire Line
	13150 4600 13150 4500
$Comp
L power:GND #PWR?
U 1 1 5F926CE8
P 14150 2650
F 0 "#PWR?" H 14150 2400 50  0001 C CNN
F 1 "GND" H 14155 2477 50  0000 C CNN
F 2 "" H 14150 2650 50  0001 C CNN
F 3 "" H 14150 2650 50  0001 C CNN
	1    14150 2650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5F926CF2
P 14150 2400
F 0 "R?" H 13950 2450 50  0000 L CNN
F 1 "10K" H 13900 2350 50  0000 L CNN
F 2 "" V 14080 2400 50  0001 C CNN
F 3 "~" H 14150 2400 50  0001 C CNN
	1    14150 2400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	14150 2650 14150 2550
Wire Wire Line
	14150 2200 14150 2250
Text GLabel 14050 2200 0    50   Input ~ 0
SINE_EN
Wire Wire Line
	14050 2200 14150 2200
Text GLabel 14050 3000 0    50   Input ~ 0
SINE
Wire Wire Line
	14150 3000 14050 3000
$Comp
L synth:DG403 U?
U 1 1 5F926D02
P 14450 3200
F 0 "U?" H 14450 3333 50  0000 C CNN
F 1 "DG403" H 14450 3424 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 14450 2500 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 14450 3200 50  0001 C CNN
	1    14450 3200
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F926D0C
P 14050 3300
F 0 "#PWR?" H 14050 3050 50  0001 C CNN
F 1 "GND" H 14055 3127 50  0000 C CNN
F 2 "" H 14050 3300 50  0001 C CNN
F 3 "" H 14050 3300 50  0001 C CNN
	1    14050 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	14050 3300 14050 3200
Wire Wire Line
	14050 3200 14150 3200
Wire Wire Line
	14450 2700 14450 2200
Wire Wire Line
	14450 2200 14150 2200
Connection ~ 14150 2200
$Comp
L Device:R R?
U 1 1 5F926D1B
P 15050 3100
F 0 "R?" H 14850 3150 50  0000 L CNN
F 1 "10K" H 14800 3050 50  0000 L CNN
F 2 "" V 14980 3100 50  0001 C CNN
F 3 "~" H 15050 3100 50  0001 C CNN
	1    15050 3100
	0    -1   1    0   
$EndComp
Wire Wire Line
	14900 3000 14750 3000
Wire Wire Line
	14750 3100 14900 3100
Connection ~ 14900 3100
Wire Wire Line
	14900 3100 14900 3000
Wire Wire Line
	13550 4600 13450 4600
Wire Wire Line
	13550 3100 13450 3100
$Comp
L power:+5V #PWR?
U 1 1 5FA1A042
P 13050 50
F 0 "#PWR?" H 13050 -100 50  0001 C CNN
F 1 "+5V" H 13065 223 50  0000 C CNN
F 2 "" H 13050 50  50  0001 C CNN
F 3 "" H 13050 50  50  0001 C CNN
	1    13050 50  
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR?
U 1 1 5FA1A7AA
P 14550 350
F 0 "#PWR?" H 14550 200 50  0001 C CNN
F 1 "+5V" H 14565 523 50  0000 C CNN
F 2 "" H 14550 350 50  0001 C CNN
F 3 "" H 14550 350 50  0001 C CNN
	1    14550 350 
	1    0    0    -1  
$EndComp
Wire Wire Line
	14550 450  14550 350 
Wire Wire Line
	13050 100  13050 50  
$Comp
L Device:R R?
U 1 1 5F5E87D1
P 5850 6550
F 0 "R?" H 5950 6600 50  0000 L CNN
F 1 "68" H 5950 6500 50  0000 L CNN
F 2 "" V 5780 6550 50  0001 C CNN
F 3 "~" H 5850 6550 50  0001 C CNN
	1    5850 6550
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:TL074 U?
U 1 1 5F5FA713
P 4850 6100
F 0 "U?" H 4850 5733 50  0000 C CNN
F 1 "TL074" H 4850 5824 50  0000 C CNN
F 2 "" H 4800 6200 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 4900 6300 50  0001 C CNN
	1    4850 6100
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:TL074 U?
U 1 1 5F62E4F6
P 2250 6450
F 0 "U?" H 2400 6350 50  0000 C CNN
F 1 "TL074" H 2250 6450 50  0000 C CNN
F 2 "" H 2200 6550 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 2300 6650 50  0001 C CNN
	1    2250 6450
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5F63B234
P 2950 5250
F 0 "U?" H 3050 5400 50  0000 C CNN
F 1 "TL072" H 2950 5250 50  0000 C CNN
F 2 "" H 2950 5250 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 2950 5250 50  0001 C CNN
	2    2950 5250
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 5F6493F7
P 2550 1350
F 0 "U?" H 2650 1500 50  0000 C CNN
F 1 "TL072" H 2500 1350 50  0000 C CNN
F 2 "" H 2550 1350 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 2550 1350 50  0001 C CNN
	2    2550 1350
	1    0    0    1   
$EndComp
$Comp
L Device:RTRIM R?
U 1 1 5F64E916
P 7800 5500
F 0 "R?" V 7900 5400 50  0000 L CNN
F 1 "10K" V 7650 5400 50  0000 L CNN
F 2 "" V 7730 5500 50  0001 C CNN
F 3 "~" H 7800 5500 50  0001 C CNN
	1    7800 5500
	0    1    1    0   
$EndComp
Text Notes 7950 5400 0    50   ~ 0
Calc: 5K\n4.8K might work fine
$Comp
L Device:R_POT RV?
U 1 1 5F748C59
P 6250 4950
F 0 "RV?" V 6135 4950 50  0000 C CNN
F 1 "20K" V 6044 4950 50  0000 C CNN
F 2 "" H 6250 4950 50  0001 C CNN
F 3 "~" H 6250 4950 50  0001 C CNN
	1    6250 4950
	0    -1   -1   0   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F775FBE
P 4450 6300
F 0 "#PWR?" H 4450 6050 50  0001 C CNN
F 1 "GND" H 4455 6127 50  0000 C CNN
F 2 "" H 4450 6300 50  0001 C CNN
F 3 "" H 4450 6300 50  0001 C CNN
	1    4450 6300
	1    0    0    -1  
$EndComp
Wire Wire Line
	4450 6300 4450 6200
$Comp
L Device:R R?
U 1 1 5F7D4E50
P 4100 6000
F 0 "R?" V 3950 5900 50  0000 L CNN
F 1 "560K" V 4200 5900 50  0000 L CNN
F 2 "" V 4030 6000 50  0001 C CNN
F 3 "~" H 4100 6000 50  0001 C CNN
	1    4100 6000
	0    1    -1   0   
$EndComp
Wire Wire Line
	6100 4950 5850 4950
Wire Wire Line
	6400 4950 6650 4950
Wire Wire Line
	6650 4950 6650 5150
Wire Wire Line
	6250 4700 6250 4800
Wire Wire Line
	4250 6000 4400 6000
Wire Wire Line
	14400 600  13650 600 
Text GLabel 13750 700  2    50   Input ~ 0
OCT_EN
Wire Wire Line
	13750 700  13650 700 
Wire Wire Line
	13750 800  13650 800 
Wire Wire Line
	13750 500  13650 500 
Wire Wire Line
	13750 400  13650 400 
NoConn ~ 13650 900 
$Comp
L power:GND #PWR?
U 1 1 5FFE58C2
P 14150 4100
F 0 "#PWR?" H 14150 3850 50  0001 C CNN
F 1 "GND" H 14155 3927 50  0000 C CNN
F 2 "" H 14150 4100 50  0001 C CNN
F 3 "" H 14150 4100 50  0001 C CNN
	1    14150 4100
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FFE58CC
P 14150 3850
F 0 "R?" H 13950 3900 50  0000 L CNN
F 1 "10K" H 13900 3800 50  0000 L CNN
F 2 "" V 14080 3850 50  0001 C CNN
F 3 "~" H 14150 3850 50  0001 C CNN
	1    14150 3850
	-1   0    0    -1  
$EndComp
Wire Wire Line
	14150 4100 14150 4000
Wire Wire Line
	14150 3650 14150 3700
Wire Wire Line
	14050 3650 14150 3650
Text GLabel 14050 4450 0    50   Input ~ 0
OCT
Wire Wire Line
	14150 4450 14050 4450
$Comp
L synth:DG403 U?
U 1 1 5FFE58DC
P 14450 4650
F 0 "U?" H 14450 4783 50  0000 C CNN
F 1 "DG403" H 14450 4874 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 14450 3950 50  0001 C CNN
F 3 "https://www.renesas.com/us/en/www/doc/datasheet/dg401-03.pdf" H 14450 4650 50  0001 C CNN
	1    14450 4650
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FFE58E6
P 14050 4750
F 0 "#PWR?" H 14050 4500 50  0001 C CNN
F 1 "GND" H 14055 4577 50  0000 C CNN
F 2 "" H 14050 4750 50  0001 C CNN
F 3 "" H 14050 4750 50  0001 C CNN
	1    14050 4750
	1    0    0    -1  
$EndComp
Wire Wire Line
	14050 4750 14050 4650
Wire Wire Line
	14050 4650 14150 4650
Wire Wire Line
	14450 4150 14450 3650
Wire Wire Line
	14450 3650 14150 3650
Connection ~ 14150 3650
$Comp
L Device:R R?
U 1 1 5FFE58F5
P 15050 4550
F 0 "R?" H 14850 4600 50  0000 L CNN
F 1 "10K" H 14800 4500 50  0000 L CNN
F 2 "" V 14980 4550 50  0001 C CNN
F 3 "~" H 15050 4550 50  0001 C CNN
	1    15050 4550
	0    -1   1    0   
$EndComp
Wire Wire Line
	14900 4450 14750 4450
Wire Wire Line
	14750 4550 14900 4550
Connection ~ 14900 4550
Wire Wire Line
	14900 4550 14900 4450
Text GLabel 14050 3650 0    50   Input ~ 0
OCT_EN
Wire Wire Line
	15200 3100 15300 3100
Wire Wire Line
	15300 3100 15300 3550
Wire Wire Line
	15300 4550 15200 4550
Wire Wire Line
	13550 3100 13550 3550
Connection ~ 13550 3550
Wire Wire Line
	13550 3550 13550 4600
Connection ~ 15300 3550
Wire Wire Line
	15300 3550 15300 4550
Wire Wire Line
	13550 3550 15300 3550
Wire Wire Line
	15300 3550 15550 3550
Connection ~ 15550 3550
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 600E1F0F
P -900 2900
F 0 "U?" H -800 3050 50  0000 C CNN
F 1 "TL072" H -900 2900 50  0000 C CNN
F 2 "" H -900 2900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H -900 2900 50  0001 C CNN
	2    -900 2900
	1    0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 600E97E6
P 1200 3850
F 0 "R?" V 1300 3800 50  0000 L CNN
F 1 "100K" V 1200 3750 50  0000 L CNN
F 2 "" V 1130 3850 50  0001 C CNN
F 3 "~" H 1200 3850 50  0001 C CNN
	1    1200 3850
	0    -1   -1   0   
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 600EA2DF
P -1500 3000
F 0 "RV?" H -1570 3046 50  0000 R CNN
F 1 "100K" H -1570 2955 50  0000 R CNN
F 2 "" H -1500 3000 50  0001 C CNN
F 3 "~" H -1500 3000 50  0001 C CNN
	1    -1500 3000
	1    0    0    -1  
$EndComp
Text Notes -1100 3250 0    50   ~ 0
COARSE knob\n-4V to 4V
Wire Wire Line
	-1350 3000 -1200 3000
Wire Wire Line
	-1200 2800 -1250 2800
Wire Wire Line
	-1250 2800 -1250 2600
Wire Wire Line
	-1250 2600 -500 2600
Wire Wire Line
	-500 2600 -500 2900
Wire Wire Line
	-500 2900 -600 2900
Wire Wire Line
	-400 2900 -500 2900
Connection ~ -500 2900
$Comp
L power:GND #PWR?
U 1 1 601132CF
P -1500 3600
F 0 "#PWR?" H -1500 3350 50  0001 C CNN
F 1 "GND" H -1495 3427 50  0000 C CNN
F 2 "" H -1500 3600 50  0001 C CNN
F 3 "" H -1500 3600 50  0001 C CNN
	1    -1500 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	-1500 3200 -1500 3150
$Comp
L Device:R R?
U 1 1 60120BDD
P -1500 2650
F 0 "R?" V -1400 2600 50  0000 L CNN
F 1 "100K" V -1500 2550 50  0000 L CNN
F 2 "" V -1570 2650 50  0001 C CNN
F 3 "~" H -1500 2650 50  0001 C CNN
	1    -1500 2650
	-1   0    0    1   
$EndComp
Wire Wire Line
	-1500 2850 -1500 2800
$Comp
L power:+12V #PWR?
U 1 1 6012E9A9
P -1500 2450
F 0 "#PWR?" H -1500 2300 50  0001 C CNN
F 1 "+12V" H -1485 2623 50  0000 C CNN
F 2 "" H -1500 2450 50  0001 C CNN
F 3 "" H -1500 2450 50  0001 C CNN
	1    -1500 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	-1500 2450 -1500 2500
$Comp
L Amplifier_Operational:TL072 U?
U 2 1 60165D58
P -900 4500
F 0 "U?" H -800 4650 50  0000 C CNN
F 1 "TL072" H -900 4500 50  0000 C CNN
F 2 "" H -900 4500 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H -900 4500 50  0001 C CNN
	2    -900 4500
	1    0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 60165D62
P 1200 4100
F 0 "R?" V 1300 4050 50  0000 L CNN
F 1 "100K" V 1200 4000 50  0000 L CNN
F 2 "" V 1130 4100 50  0001 C CNN
F 3 "~" H 1200 4100 50  0001 C CNN
	1    1200 4100
	0    -1   -1   0   
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 60165D6C
P -1500 4600
F 0 "RV?" H -1570 4646 50  0000 R CNN
F 1 "10K" H -1570 4555 50  0000 R CNN
F 2 "" H -1500 4600 50  0001 C CNN
F 3 "~" H -1500 4600 50  0001 C CNN
	1    -1500 4600
	1    0    0    -1  
$EndComp
Text Notes -1100 4950 0    50   ~ 0
FINE knob\n-0.52V to 0.52V\nTODO might need to be even finer
Wire Wire Line
	-1350 4600 -1200 4600
Wire Wire Line
	-1200 4400 -1250 4400
Wire Wire Line
	-1250 4400 -1250 4200
Wire Wire Line
	-1250 4200 -500 4200
Wire Wire Line
	-500 4200 -500 4500
Wire Wire Line
	-500 4500 -600 4500
Wire Wire Line
	-400 4500 -500 4500
Connection ~ -500 4500
$Comp
L power:GND #PWR?
U 1 1 60165D7F
P -1500 5250
F 0 "#PWR?" H -1500 5000 50  0001 C CNN
F 1 "GND" H -1495 5077 50  0000 C CNN
F 2 "" H -1500 5250 50  0001 C CNN
F 3 "" H -1500 5250 50  0001 C CNN
	1    -1500 5250
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60165D8A
P -1500 4250
F 0 "R?" V -1400 4200 50  0000 L CNN
F 1 "110K" V -1500 4150 50  0000 L CNN
F 2 "" V -1570 4250 50  0001 C CNN
F 3 "~" H -1500 4250 50  0001 C CNN
	1    -1500 4250
	-1   0    0    1   
$EndComp
Wire Wire Line
	-1500 4450 -1500 4400
$Comp
L power:+12V #PWR?
U 1 1 60165D95
P -1500 4050
F 0 "#PWR?" H -1500 3900 50  0001 C CNN
F 1 "+12V" H -1485 4223 50  0000 C CNN
F 2 "" H -1500 4050 50  0001 C CNN
F 3 "" H -1500 4050 50  0001 C CNN
	1    -1500 4050
	1    0    0    -1  
$EndComp
Wire Wire Line
	-1500 4050 -1500 4100
$Comp
L Device:R R?
U 1 1 601A055E
P -1500 3350
F 0 "R?" V -1400 3300 50  0000 L CNN
F 1 "100K" V -1500 3250 50  0000 L CNN
F 2 "" V -1570 3350 50  0001 C CNN
F 3 "~" H -1500 3350 50  0001 C CNN
	1    -1500 3350
	-1   0    0    1   
$EndComp
Wire Wire Line
	-1500 3600 -1500 3500
Wire Wire Line
	1500 4000 1500 4100
Wire Wire Line
	1350 4100 1500 4100
Connection ~ 1500 4100
Wire Wire Line
	1500 4100 1500 4300
Wire Wire Line
	1500 4000 1500 3850
Wire Wire Line
	1500 3850 1350 3850
Connection ~ 1500 4000
Text GLabel -400 4500 2    50   Input ~ 0
FINE_CV
Text GLabel 950  4100 0    50   Input ~ 0
FINE_CV
Text GLabel 950  3850 0    50   Input ~ 0
COARSE_CV
Text GLabel -400 2900 2    50   Input ~ 0
COARSE_CV
Wire Wire Line
	950  3850 1050 3850
Wire Wire Line
	1050 4100 950  4100
$Comp
L Device:R R?
U 1 1 6031214E
P -1500 5000
F 0 "R?" V -1400 4950 50  0000 L CNN
F 1 "110K" V -1500 4900 50  0000 L CNN
F 2 "" V -1570 5000 50  0001 C CNN
F 3 "~" H -1500 5000 50  0001 C CNN
	1    -1500 5000
	-1   0    0    1   
$EndComp
Wire Wire Line
	-1500 4750 -1500 4850
Wire Wire Line
	-1500 5250 -1500 5150
Text Notes 350  4450 0    50   ~ 0
0-10V, 1V/octave
Text Notes -1800 3600 1    50   ~ 0
system of equations:\n24(b/(a+b+100))=11\n24((b+100)/(a+b+100))=21
$Comp
L Device:LED D?
U 1 1 6034CF56
P 13000 3700
F 0 "D?" H 12993 3445 50  0000 C CNN
F 1 "LED" H 12993 3536 50  0000 C CNN
F 2 "" H 13000 3700 50  0001 C CNN
F 3 "~" H 13000 3700 50  0001 C CNN
	1    13000 3700
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6035D40B
P 13250 4150
F 0 "#PWR?" H 13250 3900 50  0001 C CNN
F 1 "GND" H 13255 3977 50  0000 C CNN
F 2 "" H 13250 4150 50  0001 C CNN
F 3 "" H 13250 4150 50  0001 C CNN
	1    13250 4150
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 6035D415
P 13250 3900
F 0 "R?" H 13050 3950 50  0000 L CNN
F 1 "220" H 13000 3850 50  0000 L CNN
F 2 "" V 13180 3900 50  0001 C CNN
F 3 "~" H 13250 3900 50  0001 C CNN
	1    13250 3900
	-1   0    0    -1  
$EndComp
Wire Wire Line
	13250 4150 13250 4050
Wire Wire Line
	13250 3750 13250 3700
Wire Wire Line
	13250 3700 13150 3700
Wire Wire Line
	12850 3700 12700 3700
Connection ~ 12700 3700
$Comp
L Device:LED D?
U 1 1 603B92B8
P 13000 2200
F 0 "D?" H 12993 1945 50  0000 C CNN
F 1 "LED" H 12993 2036 50  0000 C CNN
F 2 "" H 13000 2200 50  0001 C CNN
F 3 "~" H 13000 2200 50  0001 C CNN
	1    13000 2200
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 603B92C2
P 13250 2650
F 0 "#PWR?" H 13250 2400 50  0001 C CNN
F 1 "GND" H 13255 2477 50  0000 C CNN
F 2 "" H 13250 2650 50  0001 C CNN
F 3 "" H 13250 2650 50  0001 C CNN
	1    13250 2650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603B92CC
P 13250 2400
F 0 "R?" H 13050 2450 50  0000 L CNN
F 1 "220" H 13000 2350 50  0000 L CNN
F 2 "" V 13180 2400 50  0001 C CNN
F 3 "~" H 13250 2400 50  0001 C CNN
	1    13250 2400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	13250 2650 13250 2550
Wire Wire Line
	13250 2250 13250 2200
Wire Wire Line
	13250 2200 13150 2200
$Comp
L Device:LED D?
U 1 1 603CD4AA
P 14750 2200
F 0 "D?" H 14743 1945 50  0000 C CNN
F 1 "LED" H 14743 2036 50  0000 C CNN
F 2 "" H 14750 2200 50  0001 C CNN
F 3 "~" H 14750 2200 50  0001 C CNN
	1    14750 2200
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 603CD4B4
P 15000 2650
F 0 "#PWR?" H 15000 2400 50  0001 C CNN
F 1 "GND" H 15005 2477 50  0000 C CNN
F 2 "" H 15000 2650 50  0001 C CNN
F 3 "" H 15000 2650 50  0001 C CNN
	1    15000 2650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603CD4BE
P 15000 2400
F 0 "R?" H 14800 2450 50  0000 L CNN
F 1 "220" H 14750 2350 50  0000 L CNN
F 2 "" V 14930 2400 50  0001 C CNN
F 3 "~" H 15000 2400 50  0001 C CNN
	1    15000 2400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	15000 2650 15000 2550
Wire Wire Line
	15000 2250 15000 2200
Wire Wire Line
	15000 2200 14900 2200
$Comp
L Device:LED D?
U 1 1 603E4AB0
P 14750 3650
F 0 "D?" H 14743 3395 50  0000 C CNN
F 1 "LED" H 14743 3486 50  0000 C CNN
F 2 "" H 14750 3650 50  0001 C CNN
F 3 "~" H 14750 3650 50  0001 C CNN
	1    14750 3650
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 603E4ABA
P 15000 4100
F 0 "#PWR?" H 15000 3850 50  0001 C CNN
F 1 "GND" H 15005 3927 50  0000 C CNN
F 2 "" H 15000 4100 50  0001 C CNN
F 3 "" H 15000 4100 50  0001 C CNN
	1    15000 4100
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603E4AC4
P 15000 3850
F 0 "R?" H 14800 3900 50  0000 L CNN
F 1 "220" H 14750 3800 50  0000 L CNN
F 2 "" V 14930 3850 50  0001 C CNN
F 3 "~" H 15000 3850 50  0001 C CNN
	1    15000 3850
	-1   0    0    -1  
$EndComp
Wire Wire Line
	15000 4100 15000 4000
Wire Wire Line
	15000 3700 15000 3650
Wire Wire Line
	15000 3650 14900 3650
Wire Wire Line
	14600 3650 14450 3650
Connection ~ 14450 3650
Wire Wire Line
	14600 2200 14450 2200
Connection ~ 14450 2200
Text Notes 1650 4150 0    50   ~ 0
TODO does this value need to be tunable?
Text Notes -1200 3650 0    50   ~ 0
TODO: these can be combined to one
Text Notes 4000 750  0    50   ~ 0
TODO If it helps performance, a real comparator can be used here instead:
$Comp
L Comparator:LM311 U?
U 1 1 6043D86B
P 5050 1450
F 0 "U?" H 5394 1496 50  0000 L CNN
F 1 "LM311" H 5394 1405 50  0000 L CNN
F 2 "" H 5050 1450 50  0001 C CNN
F 3 "https://www.st.com/resource/en/datasheet/lm311.pdf" H 5050 1450 50  0001 C CNN
	1    5050 1450
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 6043FDAB
P 4950 1050
F 0 "#PWR?" H 4950 900 50  0001 C CNN
F 1 "+12V" H 4965 1223 50  0000 C CNN
F 2 "" H 4950 1050 50  0001 C CNN
F 3 "" H 4950 1050 50  0001 C CNN
	1    4950 1050
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 6044046B
P 4950 1850
F 0 "#PWR?" H 4950 1950 50  0001 C CNN
F 1 "-12V" H 4965 2023 50  0000 C CNN
F 2 "" H 4950 1850 50  0001 C CNN
F 3 "" H 4950 1850 50  0001 C CNN
	1    4950 1850
	-1   0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 60440D89
P 5500 1850
F 0 "R?" H 5600 1950 50  0000 L CNN
F 1 "150k" H 5600 1800 50  0000 L CNN
F 2 "" V 5430 1850 50  0001 C CNN
F 3 "~" H 5500 1850 50  0001 C CNN
	1    5500 1850
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60440D93
P 5500 2300
F 0 "R?" H 5600 2350 50  0000 L CNN
F 1 "100k" H 5600 2250 50  0000 L CNN
F 2 "" V 5430 2300 50  0001 C CNN
F 3 "~" H 5500 2300 50  0001 C CNN
	1    5500 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	5500 2150 5500 2100
Wire Wire Line
	5500 2100 4600 2100
Connection ~ 5500 2100
Wire Wire Line
	5500 2100 5500 2000
Wire Wire Line
	4750 1350 4600 1350
Wire Wire Line
	4600 1350 4600 2100
Wire Wire Line
	5500 1700 5500 1450
Wire Wire Line
	5500 1450 5350 1450
$Comp
L Device:R R?
U 1 1 6047CFEB
P 5950 2200
F 0 "R?" V 6050 2150 50  0000 L CNN
F 1 "10K" V 5950 2100 50  0000 L CNN
F 2 "" V 5880 2200 50  0001 C CNN
F 3 "~" H 5950 2200 50  0001 C CNN
	1    5950 2200
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 6047CFF5
P 5950 2900
F 0 "R?" V 6050 2850 50  0000 L CNN
F 1 "10K" V 5950 2800 50  0000 L CNN
F 2 "" V 5880 2900 50  0001 C CNN
F 3 "~" H 5950 2900 50  0001 C CNN
	1    5950 2900
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV?
U 1 1 6047CFFF
P 5950 2550
F 0 "RV?" H 5880 2596 50  0000 R CNN
F 1 "1K" H 5880 2505 50  0000 R CNN
F 2 "" H 5950 2550 50  0001 C CNN
F 3 "~" H 5950 2550 50  0001 C CNN
	1    5950 2550
	-1   0    0    1   
$EndComp
$Comp
L power:+12V #PWR?
U 1 1 6047D009
P 5950 2000
F 0 "#PWR?" H 5950 1850 50  0001 C CNN
F 1 "+12V" H 5965 2173 50  0000 C CNN
F 2 "" H 5950 2000 50  0001 C CNN
F 3 "" H 5950 2000 50  0001 C CNN
	1    5950 2000
	1    0    0    -1  
$EndComp
$Comp
L power:-12V #PWR?
U 1 1 6047D013
P 5950 3100
F 0 "#PWR?" H 5950 3200 50  0001 C CNN
F 1 "-12V" H 5965 3273 50  0000 C CNN
F 2 "" H 5950 3100 50  0001 C CNN
F 3 "" H 5950 3100 50  0001 C CNN
	1    5950 3100
	-1   0    0    1   
$EndComp
Wire Wire Line
	5950 3100 5950 3050
Wire Wire Line
	5950 2750 5950 2700
Wire Wire Line
	5950 2400 5950 2350
Wire Wire Line
	5950 2000 5950 2050
Wire Wire Line
	5800 2550 5500 2550
Wire Wire Line
	5500 2550 5500 2450
Text Notes 6300 2900 1    50   ~ 0
Compensate for VBE
Wire Wire Line
	4950 1850 4950 1800
Wire Wire Line
	4950 1150 4950 1050
NoConn ~ 5050 1150
NoConn ~ 5150 1150
Wire Wire Line
	5050 1750 5050 1800
Wire Wire Line
	5050 1800 4950 1800
Connection ~ 4950 1800
Wire Wire Line
	4950 1800 4950 1750
$Comp
L Device:R R?
U 1 1 60534A48
P 5500 1150
F 0 "R?" H 5600 1250 50  0000 L CNN
F 1 "10K" H 5600 1100 50  0000 L CNN
F 2 "" V 5430 1150 50  0001 C CNN
F 3 "~" H 5500 1150 50  0001 C CNN
	1    5500 1150
	1    0    0    -1  
$EndComp
Wire Wire Line
	5500 1300 5500 1450
Connection ~ 5500 1450
$Comp
L power:+12V #PWR?
U 1 1 6054A16D
P 5500 900
F 0 "#PWR?" H 5500 750 50  0001 C CNN
F 1 "+12V" H 5515 1073 50  0000 C CNN
F 2 "" H 5500 900 50  0001 C CNN
F 3 "" H 5500 900 50  0001 C CNN
	1    5500 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	5500 900  5500 1000
$EndSCHEMATC