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I would like to build a 5d8 twin but I am having some trouble determining the correct size power transformer. Could someone offer some advice or info?
1) look in a 5d8 twin and tell me the model number for the Power transformer
2) or validate my calculations:
the amp uses 5Y3GT tubes as rectifier. I understand that the 5Y3GT tubes amplifier at 1.2 times. The layout for 5d8 circuit shows +390V coming from rectifier circuit to first filter capacitor. So if the amplification ratio of 1.2 per 5Y3GT tube is correct, I calculate (390/1.2)/1.2 or a transformer rated at 270 volts AC.
I appreciate your help!
1) look in a 5d8 twin and tell me the model number for the Power transformer
2) or validate my calculations:
the amp uses 5Y3GT tubes as rectifier. I understand that the 5Y3GT tubes amplifier at 1.2 times. The layout for 5d8 circuit shows +390V coming from rectifier circuit to first filter capacitor. So if the amplification ratio of 1.2 per 5Y3GT tube is correct, I calculate (390/1.2)/1.2 or a transformer rated at 270 volts AC.
I appreciate your help!