Tube-number record
6842
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BrandNational Union
ClassHigh Voltage Regulator Tube
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 150 mA
Construction
Primary TypePentode
EnvelopeT-5 1/2
Base MaterialSkirted Miniature
SectionsSingle
Filament / Heater
Heater Notes6.3 Volts +/- 10%
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation8 W
Grid 2 Voltage150 V
Grid 1 Voltage-100 V
Cathode Current10 mA
H-C Voltage300 V
Audio Performance
Key Features
- Low capacities
- High gain
- High voltage ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Operation - Case 1 | 500 V | 2250 | 930000 | — | 3.5 mA |
| Class A Operation - Case 2 | 1000 V | 2400 | 930000 | — | 4 mA |
| Class A Operation - Case 3 | 1500 V | 2500 | 930000 | — | 4.5 mA |
Application Notes
Designed for use in regulated power supplies or voltage amplifiers operating at plate potentials between 300 V and 4 kV. Particularly useful as a shunt or series regulator in equipment requiring stabilized output voltage. Also well suited for sweep circuits employing electrostatic deflection. Current limiting series impedance must be used if peak voltage exceeds maximum ratings.
Datasheets
Datasheet: 6842.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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