The temperature stability is not very good

[daohuaxiang4]

1，Hello, I can not find the ad823 chip with lm358 instead of poor temperature stability after the need to adjust the pid parameters or should use the ad823 chip
2，Some of the cores make noise when they work

[sfrwmaker]

Hello!

1. l358 is not an analog of ad822. If the lm358 was good for this i would put it itno the schematics, The magic is that lm358 is working like random generator and the controller become instable.
2. Noise will be vanished as soon as you use accurate op-amp. It is a magic. :)

[daohuaxiang4]

Thank you very much for your answer. I'll try another IC