ACT28
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BrandMarconi's Wireless Telegraph Company Limited
ClassPulsed Oscillator Triode
BaseDisc Seal
Filament16V @ 7.3mA
Construction
Primary TypeTriode
EnvelopeDisc Seal
SectionsSingle
Filament / Heater
Heater NotesIndirectly-heated; Warm-up time 4 minutes
Absolute Maximum Ratings
Plate Voltage11000 V
Plate Dissipation1500 W
Audio Performance
Key Features
- Forced-air-cooled
- Disc seal
- Indirectly-heated
- Oxide-coated cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| UHF Pulsed Oscillator | 1500V | 50000 | - | 45 | 800mA |
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.
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