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BrandPhilips
ClassTriode
BasePhilips A (4-pin)
FilamentV @ mA

Construction

Primary Typetriode
EnvelopeGlass
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage100 V
Cathode Current3 mA

Audio Performance

Key Features
  • High vacuum
  • Triode for detection
  • HF and LF amplification

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
LF Amplifier60V----
LF Amplifier80V----
LF Amplifier100V25040000102mA

Application Notes

Specifically designed for use with a 4-volt battery; requires a 6-ohm adjustable filament resistor. When used as a detector, a plate voltage of 40-60V is sufficient. Can be supplied with various base types, though the standard is Philips 4-pin (A).

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