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PEN.A.1

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BrandBrimar
ClassPower Pentode
FilamentV @ mA

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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A250V3000--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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