B 228
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BrandPhilips Miniwatt
ClassTriode
BaseS1
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation0.75 W
Cathode Current6 mA
Audio Performance
Key Features
- Detector with transformer coupling
- L.F. amplifier with transformer coupling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal | 150V | 1200 | 23000 | 28 | 2mA |
Application Notes
Audion with transformer coupling or L.F. amplifier with transformer coupling.
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