QP.230
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BrandEdiswan Mazda
ClassOutput Pentode
Base7-pin
Construction
Primary TypePentode
EnvelopeGlass
SectionsDouble
Filament / Heater
MaterialThorium-coated
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage150 V
Audio Performance
Typical THD5%
Power Output0.85 W
Key Features
- Battery Double Pentode
- Quiescent push-pull operation
- High efficiency
- Designed for self-bias operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Quiescent Push-Pull | 100V | 3000 | - | - | 3.8mA |
| Quiescent Push-Pull | 110V | - | - | - | 4.25mA |
| Quiescent Push-Pull | 120V | - | - | - | 4.65mA |
Application Notes
Intended for the output stage of battery receivers. Economical H.T. and L.T. current consumption. Requires stabilization against parasitic oscillations.
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