How this works?

Thread Starter

mhtplsh

Joined Jul 29, 2007
27
i was just trying to learn about protection circuits in amplifier.
I want to know how this thermal circuit works?
The thermal sensor is LM35.
Thanks in advance,
 

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beenthere

Joined Apr 20, 2004
15,808
Without the external circuit it's hard to be sure. It appears that if either Q3 or Q4 gets turned on the extra current will shut down the 27 volt circuit.
 
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