6931
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BrandPhilco
ClassCorona Discharge Regulator Tube
Base4 Pin Short Intermediate Shell Octal
Construction
Primary TypeGas filled corona discharge
EnvelopeT9
Base MaterialShort Intermediate Shell Octal
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage3150 V
Cathode Current0.5 mA
Audio Performance
Key Features
- Exceptional stability
- Arc-free operation
- Gas filled corona discharge
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Shunt Regulator | 3000V | - | - | - | 0.275mA |
Application Notes
Designed for operation as a shunt regulator or voltage reference tube. Used in high voltage supply of an Ionitron. Rate of voltage rise in the corona region should be limited to 4 or 5 volts per millisecond to prevent relaxation oscillations.
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