Tube-number record
POWER DIODE
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POWER DIODE is a tube type in the TubeDatabase archive (class: High Vacuum Rectifier). Recorded specifications: brand ITT, construction High vacuum, base External Radiator, maximum plate voltage 25000 V, and maximum plate dissipation 2500 W. The archive does not yet hold a photographed example of this type.
BrandITT
ClassHigh Vacuum Rectifier
Construction
Primary TypeHigh vacuum
Rectifier TypeHalf-Wave
EnvelopeGlass
Base MaterialExternal Radiator
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage25000 V
Plate Dissipation2500 W
Cathode Current6000 mA
Audio Performance
Key Features
- Rugged construction
- Free of internal insulators
- Forced air cooled anode
- Thoriated tungsten bifilar helix cathode
- No spring tensioning devices
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier Service | — | — | — | — | 6000 mA |
| Shunt Diode Service | — | — | — | — | 700 mA |
Application Notes
Designed for rectifier service or in special applications in shunting or charging circuits. Anode is capable of dissipating 2.5 kilowatts. Full rated filament voltage may be safely applied to the cold filament.
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