Tube-number record
ACT28
0 archive entries
ACT28 is a tube type in the TubeDatabase archive (class: Pulsed Oscillator Triode). Recorded specifications: brand Marconi's Wireless Telegraph Company Limited, construction Triode, socket Planar / disc seal, maximum plate voltage 11000 V, and maximum plate dissipation 1500 W. The archive does not yet hold a photographed example of this type.
BrandMarconi's Wireless Telegraph Company Limited
ClassPulsed Oscillator Triode
BasePlanar / disc seal
Filament16 V @ 7.3 mA
Construction
Primary TypeTriode
EnvelopeDisc Seal
SectionsSingle
Filament / Heater
Heater NotesIndirectly-heated; Warm-up time 4 minutes
Absolute Maximum Ratings
Plate Voltage11000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| UHF Pulsed Oscillator | 1500 V | 50000 | — | 45 | 800 mA |
Application Notes
The ACT28 is a forced-air-cooled disc seal triode intended for use as a pulsed oscillator in common grid co-axial circuits. Requires 150 cu. ft./min air flow for the anode and 20 cu. ft./min for the grid seal.
Datasheets
Datasheet: ACT28.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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