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Old 13th Aug 2022, 11:23 am   #17
Valvepower
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Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
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Default Re: Fender Vibro Champ Amp

I assume your measuring just the current flowing to the output transformer and not the entire HT supply and current?

Going back to my last post the cathode voltage reading and thus the calculated current will include the screen g2 current so the actual anode current will be lower than the cathode current – I think that right... The napper is overheating in this weather!

Terry.

Quote:
Originally Posted by Bufo Bill View Post
Anode current was calculated via voltage and impedance. I measured this between pin 8 of the 5Y3GT valve which goes to the transformer and anode pin of the 6V6GTA and calculated the current that way.
Cheers from Bill.
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