Duodecar type used as triple resistance-coupled
amplifiers in audio equipment. Requires duodecar
12-contact socket. Each triode unit is independent
of the other except for the common heater.
Heater Voltage (ac/dc): .............................................................. 6.3 volts
Heater Current: .................................................................... 0.60 amperes
Class A1 Amplifier (Unit One)
Maximum Ratings (Design-Center Values)
Plate Voltage ............................................................................... 330 volts
Grid Bias (Negative value)........................................................... 50 volts
Grid Bias (Positive value).............................................................. 0 volts
Cathode Current ............................................................................. 20 ma.
Plate Dissipation ...................................................................... 2.75 watts
Amplification Factor ............................................................................. 17
Class A1 Amplifier (Units Two and Three)
Maximum Ratings (Design-Center Values)
Plate Voltage ................................................................................ 330 volts
Grid Bias (Negative value)........................................................... 50 volts
Grid Bias (Positive value).............................................................. 0 volts
Plate Dissipation ...................................................................... 0.30 watts
Amplification Factor ............................................................................. 100