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

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Tube-number record

H12

0 archive entries

H12 is a tube type in the TubeDatabase archive (class: Midget Triode). Recorded specifications: brand Marconi and construction Triode. The archive does not yet hold a photographed example of this type.

BrandMarconi
ClassMidget Triode

Construction

Primary TypeTriode
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Audio Performance

Key Features
  • Midget size
  • Deaf aid stage

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Voltage Amplifier45 V—25000015—

Datasheets

Datasheet: H12.pdf

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

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