Home » Audio » Thermionic Emissions » Fisher 500C-how hot is too hot?
New day, more tinkering, new results [message #9191 is a reply to message #9184] Wed, 07 September 2005 12:47 Go to previous messageGo to previous message
hurdy_gurdyman is currently offline  hurdy_gurdyman
Messages: 416
Registered: May 2009
Illuminati (1st Degree)
Not tired anymore (much) and started playing with cathode resistors. I have a single 5000 ohm wirewound resistor hooking all the cathodes together, bypassed by a 1000 uF cap, and get these results:

Plate= 440
Screen= 340
Grid= -25.5
Cathode= 15

What voltage should I be shooting for on the cathode resistor seeing as I've reached the maximum the bias power supply can put out?

Dave


 
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