Tube-number record
BU1-5/20
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ClassPulse Rectifier Tube
Filament6.3 V @ 2600 mA
Construction
Primary TypeRectifier
Envelopeglass
SectionsSingle
Filament / Heater
Warm-up Time55s
Heater NotesIndirectly heated, oxide-coated cathode
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation33 W
Cathode Current50 mA
Audio Performance
Key Features
- High-voltage
- Pulsed operation
- Indirectly heated
- Glass envelope
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Initial Pulse Operation | — | — | — | — | 150 mA |
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