In Reply to: Caution: 431's can be fussy parts. posted by VoltSecond on May 24, 2004 at 23:11:19:
I got them from digikey.431 works fine with me. just remember that you need caps at the top leg of the voltage divider to avoid oscillations, they can take current but not be able to deal with voltage drop over 37 volts.
I usally put them in the source loop to provide current sensing with good results.
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