Home » Audio » Thermionic Emissions » Fisher 500C-how hot is too hot?
Re: Fisher 500C-how hot is too hot? [message #9185 is a reply to message #9184] Mon, 05 September 2005 15:32 Go to previous messageGo to previous message
hurdy_gurdyman is currently offline  hurdy_gurdyman
Messages: 416
Registered: May 2009
Illuminati (1st Degree)
When I first did the EL34 conversion I mounted a couple of Radio shack transformers on the back of the chassis to handle voltage for the power tube heaters, so thats not a problem.

Will it hurt the power transformer to change the bridge rectifier-to-ground resistor to an even lower value than the 2 ohms I'm presently using (origional value was 15 ohms)? I've looked at schematics of amps from other companies and see that many times the bridge rectifier is hooked directly to ground without any resistors.

I was wondering earlier about using cathode resistors but didn't know how to adjust the values. I think I'll try this soon.

Dave

 
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