search

sfrwmaker / hakko_t12_stm32

The soldering iron controller built on stm32 micro controller
150 stars 63 forks source link

The temperature stability is not very good #4

Open daohuaxiang4 opened 4 years ago

daohuaxiang4 commented 4 years ago

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 commented 4 years ago

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 commented 4 years ago

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