Tube-number record
DQ 61
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BrandBrown Boveri
ClassMercury-Vapour Rectifier Tube
Base3-pin / Peewee
Construction
Primary TypeMercury Vapour
Rectifier TypeHalf-wave
EnvelopeGlass
Sections1
Filament / Heater
MaterialOxide-coated
Warm-up Time60s
Absolute Maximum Ratings
Plate Voltage24000 V
Cathode Current5 mA
Audio Performance
Key Features
- Oxide-coated directly heated cathode
- Mercury pellet filling
- Forced air cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Max Vinv = 24kV | 24000 V | — | — | — | 2.5 mA |
| Max Vinv = 18kV | 18000 V | — | — | — | 5 mA |
Application Notes
High-voltage rectifiers. Tube mounting position from vertical (anode up) to horizontal.
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