So far as I am aware the difference in the HT between the two is due to a different mains transformer, one gives out 315 volts ac under nominal load and the other gives out 365 volts ac under nominal load.
Looks like direct cathode rectifier to me, if so then don't exceed the maximum reservior capacitance value, that value is usually stated in the manufactures valve data.
Lawrence.
Looks like direct cathode rectifier to me, if so then don't exceed the maximum reservior capacitance value, that value is usually stated in the manufactures valve data.
Lawrence.
