PCL83
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BrandMullard
ClassTriode Pentode
BaseNoval (B9A)
Filament12.6V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
SectionsCombined triode and output pentode
Filament / Heater
Heater NotesSuitable for series operation a.c. or d.c.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation5.4 W
Grid 2 Voltage250 V
Grid 1 Voltage-350 V
Cathode Current45 mA
H-C Voltage250 V
Audio Performance
Typical THD10%
Power Output2.2 W
Key Features
- Separate cathodes
- Series heater operation
- Low capacitances
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section (Class A) | 170V | 5500 | 53000 | 10 | 30mA |
| Triode Section | 250V | 2200 | 7700 | 17 | 10.5mA |
Application Notes
Television receivers with the triode as a frame blocking oscillator and the pentode as a frame output valve. Also used as audio output valve.
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