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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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3DR3 vacuum tube outline illustration

Tube-number record

3DR3

0 archive entries

3DR3 is a tube type in the TubeDatabase archive (class: High-Voltage Rectifier). Recorded specifications: brand General Electric, construction Diode, base Glass with Bonded Shield, socket Octal, and maximum plate voltage 30000 V. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassHigh-Voltage Rectifier
BaseOctal
Filament3.15 V @ 300 mA

Construction

Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeT-11
Base MaterialGlass with Bonded Shield
Sections1

Filament / Heater

Heater NotesHeater-cathode type; heater voltage range 2.65V to 3.65V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Tube Voltage Drop70 V———7 mA

Application Notes

Designed for use in color television receivers as the high voltage rectifier to supply power to the anode of the picture tube. Features a protective shield to reduce X-radiation output.

Datasheets

Datasheet: 3DR3.pdf

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

Filters

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    Absolute Maximum Ratings

    Plate Voltage30000 V
    Cathode Current2 mA

    Audio Performance

    Key Features
    • X-radiation absorbing material
    • Bonded Shield
    • Protective shield
    • Unipotential coated cathode