VP.22
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BrandEdiswan Radio
ClassBattery Variable-Mu H.F. Pentode
BaseBritish Octal
Construction
Primary TypePentode
EnvelopeSmall, metallised
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage150 V
Audio Performance
Key Features
- Variable-mu
- Screened Pentode
- Metallised bulb
- High signal handling capacity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. Amplifier | 120V | 1400 | 1300000 | - | 1.2mA |
| Minimum Gain | 120V | 10 | - | - | - |
| Cut-off | 120V | 2.8 | - | - | - |
Application Notes
The VP.22 is a variable-mu screened Pentode for use as an H.F. amplifier in battery operated receivers. It is preferable to connect the screen to the full H.T. voltage through a series dropping resistance. Suppressor grid should be connected to earth or potential negative to earth.
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