The 47 is pentode designed as an audio amplifier and used as a low power RF amplifier and oscillator. Length = 5.00" Diameter = 2.00" Max voltage = 250 Max current = 31 ma Fil voltage = 2.5 Fil current = 1.75 amps GOTO INDEX
The 47 is pentode designed as an audio amplifier and used as a low power RF amplifier and oscillator.