Resistor Question

For those building and repairing amps on their own. Learna and share ideas.

Resistor Question

Postby herbiedeez on Fri Apr 04, 2014 1:33 am

New to the forum. Glad I found it! I am repairing an old Gibson amp and the schematic calls for a 500 ohm resistor from 5y3 rectifier pin 8. It also shows 350 volts just before the resistor. What wattage should the resistor be? Thanks in advance!
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Re: Resistor Question

Postby PeterS on Fri Apr 04, 2014 1:19 pm

The current there must be something in the ballpark of 100 mA or less, so I squared R is 5 watts... might be best to go to 10 watts... but what amp is it? We could make a better estimate with more information...
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