Classification-Aubengine-type bulb of glass, a four-prong bayonet pin tube,oxide coated filamentary,mesh plate , canbon plate triode.
Application-Audio frequency amplifier where power outputs of approximately 4.5 watts or less is required at relatively low plate voltages.
Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1 and 2.
Nominal operating conditions and parameters
Filament voltageˇˇˇˇˇˇˇˇ....4.0 V*
Nominal filament currentˇˇˇˇˇ. 1A
Plate voltageˇˇˇˇˇˇˇˇˇˇ. 300 V
Grid voltageˇˇˇˇˇˇˇˇˇˇ.. ¨C45V**
Plate currentˇˇˇˇˇˇˇˇˇˇ...50 mA
Impedanceˇˇˇˇˇˇˇˇˇˇˇ.830 ohms
Amplification factorˇˇˇˇˇˇ......5.0
Mutual Conductanceˇˇˇˇˇ..ˇ7.5 mA/V
Grid currentˇˇˇˇˇˇˇˇˇˇ0.05¦ĚA
*Alternating-current filament supply or Direct-current filament supply.
**Alternating-current filament supply is used. The grid and plate returns should be connected to a center tap on the secondary of the filament transformer.
***Direct-current filament supply is used. The grid and plate returns areconnected to the negative end of the filament.
Characteristics-Average characteristics
Figure 4.shown typical curves of plate currents as a function of grid voltage for several values of plate voltages. It is alternating-current filament supply.
Fig.3
Limiting Operation Conditions for Safe Operation-nor simultaneous ratings
Maximum plate voltage ˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ.300 volts
Maximum plate dissipation ˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ15 watts
|
