C-327
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BrandCunningham
ClassGeneral Purpose Triode
Base5-Pin
Filament2.5V @ 1750mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesAlternating current operation
Absolute Maximum Ratings
Plate Voltage180 V
Audio Performance
Key Features
- Permits operation from alternating current
- Detector or Amplifier use
- Heater element design
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Detector | 45V | - | - | - | - |
| Amplifier | 90V | - | - | - | - |
| Amplifier | 135V | - | - | - | - |
| Power Amplifier | 180V | - | - | - | - |
Application Notes
In some circuits, biasing of the heater approximately 9 volts negative with respect to the cathode may be beneficial for best operation. A heater/cathode bias higher than 9 volts is not recommended.
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