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I think the method of operation here with the diode is like when a diode is used without a filter cap in the "instant on" circuit of TV's....part of the AC waveform is cut off so that the effective voltage is lower.
How is the horizontal output tube current/horizontal efficiency coil adjustment?
Does this set have a width switch that may be adjusted?
Somewhere on an RCA color tv schematic I saw that the filament winding of the power transformer actually produced 6.8 volts? I have not actually measured the filament voltage in an RCA set to check.
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