PEN.A.1
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BrandBrimar
ClassPower Pentode
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Cathode Current32 mA
Audio Performance
Key Features
- Directly heated power pentode
- Automatic bias via filament centre point
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250V | 3000 | - | - | 32mA |
Application Notes
The valve is fully loaded with a grid swing of 11 volts R.M.S. Output is sufficient to operate average moving coil speaker. Bias resistor should be shunted by at least 4 mfd.
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