|
We usually use a 1 amp fuse for table top tube type radios, 2 amp for AM/SW consoles and 3 amp for larger radio phono consoles...the fuse however is for short circuit/overcurrent protection and not surge protection. I don't think short duration transients will really hurt tube equipment especially that with a power transformer...however you can use a variac to reduce the line voltage slightly to 110 volts to reduce strain on filaments. You can also wire up a 120 volt to 6 volt filament transformer as an autotransformer in such a way that you "buck" 6 volts off the 121 leading to an output of 115 but I can't remember how you hook that up.
|