"dave"


I listen to distant AM radio in the shop. An amp that breaks into
oscillation (often caused by "replacement" actives with way too much
bandwidth, BTW) will cause interference on the AM (MW) radio. It is as
reliable an indicator of oscillation as fat blurry traces on the Oscope.


** Errrr - that is "parasitic" oscillation at radio frequency.

My post was about a quite different matter.

Maybe you have never seen it - it kills output stages in 30 seconds.




...... Phil