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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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BT31 vacuum tube outline illustration

Tube-number record

BT31

0 archive entries

BT31 is a tube type in the TubeDatabase archive (class: Power Switching Tube). Recorded specifications: brand Arcotron, construction Other / special, socket Noval (B9A), and maximum plate voltage 600 V. The archive does not yet hold a photographed example of this type.

BrandArcotron
ClassPower Switching Tube
BaseNoval (B9A)

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage600 V
Grid 1 Voltage-100 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
AC Supply Operation220 V———300 mA

Application Notes

Main application: Control of solenoid valves (Steuerung von Magnetventilen).

Datasheets

Datasheet: BT31.pdf

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

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    Cathode Current300 mA

    Audio Performance

    Key Features
    • Cold cathode
    • Thyratron-like characteristic
    • Mounting in any position