TWIN BEAM POWER AMPLIFIER
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BrandTung-Sol
ClassPower Output Tube
Base8 Pin Octal
Filament26.5V @ 600mA
Construction
Primary TypePentode
EnvelopeT-9
Base MaterialIntermediate Shell B8-6
SectionsTwin
Filament / Heater
Heater NotesCoated Unipotential Cathode
Absolute Maximum Ratings
Plate Voltage50 V
Plate Dissipation2 W
Grid 2 Voltage50 V
H-C Voltage90 V
Audio Performance
Typical THD5%
Power Output0.5 W
Key Features
- Coated Unipotential Cathode
- Aircraft or Mobile Service
- Limited to 28 Volts supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (Each Unit) | 26.5V | 5700 | - | - | 20mA |
| Push-Pull Class AB1 Amplifier (Both Units) | 26.5V | - | - | - | 30mA |
Application Notes
Intended for use as a push-pull or parallel connected power output tube in aircraft or mobile service where both the plate and heater supply is limited to 28 volts.
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