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Old 11-27-2021, 01:29 PM   #9
Great Sage 齊天大聖
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Join Date: Dec 2009
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Default Re: Frying amplifier finals... audio, not rf...

it's not heat, if the bias goes out of balance on a push/pull output circuit the transistors drive into each other and create a dead short
if your lucky the amp has seperate internal fuses on the + and - rails.
but a lot dont
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