Tube-number record
ML-8795
0 archive entries
ML-8795 is a tube type in the TubeDatabase archive (class: High-power Triode). Recorded specifications: brand Machlett, year 1971, construction Triode, base Coaxial Terminals, socket Special / none, maximum plate voltage 20000 V, and maximum plate dissipation 140000 W. The archive does not yet hold a photographed example of this type.
BrandMachlett
ClassHigh-power Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeLow-loss Alumina Ceramic
Base MaterialCoaxial Terminals
SectionsSingle
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation140000 W
Grid 1 Voltage-3200 V
Cathode Current20000 mA
Audio Performance
Key Features
- Water cooled anode
- Low inductance coaxial terminals
- High power output up to 240 kW
- Useful at frequencies up to 30 MHz at full ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier and Oscillator Class C Telegraphy | 17000 V | — | — | 40 | 19000 mA |
Application Notes
Additional forced-air cooling of the grid and filament terminals (200 cfm) required. Fast-acting crowbar protection recommended for high power safety.
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