Tube-number record
HIGH-VOLTAGE KENOTRON
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ClassRectifier
BaseNoval (B9A)
Filament5 V @ 870 mA
Construction
Primary TypeVacuum Tube
Rectifier TypeHalf-wave
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated cathode
Absolute Maximum Ratings
Plate Voltage5000 V
Plate Dissipation5 W
Cathode Current50 mA
Audio Performance
Key Features
- High-voltage
- Indirectly heated
- Oxide-coated cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 40 V | — | — | — | 50 mA |
Application Notes
Designed to rectify A.C. voltage in high-voltage rectifier circuits of stationary or movable installations.
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