Does anyone have a schematic for a 811 amp? I found one a website but do not understand it. It has the input going to the # 1 pin. (filament connection)? I have built sweep tube amps before but this is something different. A simple schematic is what I need because of "brain-dead" syndrome. Any help would be appreciated. Ray :roll:
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811 schematics
- Thread starter jammeejoe
- Start date
The input RF is applied through a capacitor to the filament which is also the cathode of the 811A type tubes as well as several others.The RF is blocked from feeding back into the filament transformer by a filament choke and bypass capacitors.They are what are know as directly heated cathode type tubes.The type that has a separate filament and cathode are called indiirectly heated types.
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