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Bitten by Fake TL074s

@fredrik has mentioned fake ICs a few times and my stash of TL074’s turns out to definitely be. The first sign should have been when I found a single LM324 mixed in, but I didn’t put it together at the time. I built a PM Foundation State Machine and it wasn’t working. The gate just stayed high. [image] I’m usually hesitant to contact support for anything, but after a lot of troubleshooting with no luck, I contacted the manufacturer and I got expert help testing and calibrating everything. O…