UA025A
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BrandTESLA
ClassArgon-filled half-wave rectifier
BaseE40/45
Construction
Primary TypeGas-filled rectifier
Rectifier TypeHalf-wave
EnvelopeSpecial glass
Base MaterialMetal/Screw
SectionsSingle
Filament / Heater
MaterialOxide-coated
Warm-up Time60s
Absolute Maximum Ratings
Plate Voltage10000 V
Cathode Current250 mA
Audio Performance
Key Features
- Directly heated cathode
- Screw base E40/45
- Top cap anode
- Suitable for large amplifiers and small transmitters
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Full-wave rectifier (Obr. 1) | 3500V | - | - | - | 500mA |
| Three-phase rectifier (Obr. 2) | 3500V | - | - | - | 750mA |
Application Notes
The tube must be warmed up for at least 1 minute before anode voltage is applied. The rectified output depends on the circuit configuration (Full-wave, Bridge, etc.).
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