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

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Tube-number record

MH4

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BrandMarconi
ClassMedium slope general purpose triode
Base5-pin
Filament4 V @ 1 mA

Construction

Primary TypeTriode
EnvelopeGlass

Filament / Heater

Absolute Maximum Ratings

Plate Voltage200 V

Audio Performance

Key Features
  • suitable for use as detector, L.F. amplifier, in phase charging circuits, as an oscillator

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
At Ea 100, Eg 0100 V36001110040—
L.F. Amplifier175 V————

Application Notes

Metallised valve capacities: G-E 7.0 pF, G-A 5.1 pF, A-E 6.5 pF.

Datasheets

Datasheet: MH4.pdf

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

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