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7. Trace a diode

Joseph R. Eoff edited this page Jun 3, 2021 · 3 revisions

Rodriguez can make current/voltage plots of simple diodes, LEDs, and Zener diodes. Keep in mind that it can only reach 5V and about 5 milliamperes of current. Zener diodes with a breakdown voltage of more than 5V can't be tested.

Diode measurements are made between filtered D10 output and ground.

Connect the diode to Rodriguez

  • If you are using a solderless breadboard, refer to Breadboard setup Diode.
  • Connect the diode or LED with the anode towards the D10 filtered output and the cathode (banded end) to ground.
  • Connect the Zener diode with the cathode (banded end) towards the D10 filtered output and the anode to ground. This is the reverse of a normal diode, since the reverse breakdown voltage is the interesting parameter of a Zener diode.

Set Rodriguez to do a diode trace

  1. Enter the device name in the field "Device name:" - the device's name will appear at the top of the trace area.

  1. Select the "Diode" function in the selection box above the "Run" button."

  1. Click "Run" and wait while Rodriguez does its thing.