Tube-number record
1BQ2
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BrandAmperex
ClassHigh-vacuum single-anode rectifier
BaseNoval (B9A)
Filament1.4 V @ 600 mA
Construction
Primary TypeHigh vacuum
Rectifier TypeSingle-anode
EnvelopeT 6-1/2, glass
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesParallel supply; tolerance ±10%
Absolute Maximum Ratings
Plate Voltage20000 V
Cathode Current0.5 mA
Audio Performance
Key Features
- Chemically treated envelope to avoid flash-over
- Anti-corona ring compatible
- Top cap plate connection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| EHT supply from line time base | 20000 V | — | — | — | 0.2 mA |
Application Notes
For use as EHT rectifier in television receivers. Heater voltage should be adjusted to nominal value at 200 uA DC output. Metal cap should have an insulating cover under high inverse voltage or high humidity conditions.
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