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Nap 135

kenb

pfm Member
Does anybody have an interior picture of an unmolested Nap 135 they could let me have a look at please?
 
amp135.jpg
 
Temperature sensing and fan controller.
Quite a clever board! It compares the Vbe of one of the transistors on it (and the 135 heatsink) to a reference voltage and switches on the fan using the other one when it gets too hot (44 degrees C IIRC).

Mark.
 


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