Re: [AVR-Chat] Negative bias supply for signal conditioning op-amp
2005-03-31 by Grzegorz Bywalec
Hi!
Try LM358 - it should work fine in this aplicattion
(2opamp wersion of LM324).
If you realy need negative supply you my use one uP
pin to directly drive a cap in voltage converter. I
use it to get negative contrast voltage for LCD
displays. By changing duty cycle is posibble to
"control" output voltage.
Grzesiek
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