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It's hard to build an oscillator

(lcamtuf.substack.com)
219 points chmaynard | 1 comments | 21 Nov 25 07:45 UTC | HN request time: 0.222s | source
1. crmd ◴[21 Nov 25 18:06 UTC] No.46006990[source]▶
The bring up of seemingly every tube guitar amp i’ve ever built starts with wild oscillation due to negative feedback from the wrong transformer secondary, aka positive feedback. Gets me every time.