B 105
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BrandPhilips
ClassReceiver Triode, Low Frequency Power Amplifier
BasePhilips A32
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialDull emitter
Absolute Maximum Ratings
Plate Voltage120 V
Cathode Current20 mA
Audio Performance
Key Features
- 1-volt series
- Miniwatt series
- Suitable for dry cell operation
- Pure sound output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Amplifier | 120V | 600 | 8300 | 5 | 12mA |
| Detector | 40V | - | - | - | - |
Application Notes
Requires a 1.5 volt dry cell with a series resistor of at least 6 ohms to set the correct filament voltage. Used in four-lamp receivers alongside 2 A 109 and 2 B 105 types.
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