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

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E1T vacuum tube outline illustration

Tube-number record

E1T

0 archive entries

E1T is a tube type in the TubeDatabase archive (class: Decade Counter Tube). Recorded specifications: brand PHILIPS, construction Other / special, base Glass/Plastic, socket Duodecal, and maximum plate voltage 400 V. The archive does not yet hold a photographed example of this type.

BrandPHILIPS
ClassDecade Counter Tube
BaseDuodecal
Filament6.3 V @ 300 mA

Construction

Primary TypeOther / special
EnvelopeGlass
Base MaterialGlass/Plastic
SectionsSingle

Filament / Heater

Heater NotesIndirect by A.C. or D.C.; series or parallel supply

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
standard operation (max 30,000 counts/sec)300 V———0.95 mA

Application Notes

The circuit diagram specifies 1% precision resistors for the voltage divider to maintain the ratio of g1 and D supply voltages. Magnetic fields must not exceed 2 Gauss to avoid upsetting the electron beam operation.

Datasheets

Datasheet: E1T.pdf

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

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    Plate Voltage400 V

    Audio Performance

    Key Features
    • Special Quality (SQ)
    • Long life (> 10,000 hours)
    • High reliability
    • Decade counter with luminescent spot reading