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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

20LF6

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BrandGeneral Electric
ClassBeam Power Pentode
BaseCompactron
Filament20 V @ 600 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeT-12
Base MaterialGlass
SectionsSingle

Filament / Heater

Heater NotesA.C. or D.C. parallel supply

Absolute Maximum Ratings

Plate Voltage990 V
Plate Dissipation40 W
Grid 2 Voltage275 V
Grid 1 Voltage-550 V
Cathode Current500 mA
H-C Voltage200 V

Audio Performance

Key Features
  • Beam power pentode
  • Designed for horizontal deflection circuits in color television receivers

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Horizontal-Deflection Amplifier160 V———1400 mA
Horizontal-Deflection Amplifier50 V———800 mA

Datasheets

Datasheet: 20LF6.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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