B 403
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BrandPhilips
ClassPower Triode
Construction
Primary Typetriode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Audio Performance
Key Features
- Low internal resistance
- Directly heated
- Output triode for loud speaker reception
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 150V | 1500 | 2000 | 3 | 15mA |
Application Notes
B 403 is an output lamp for speaker reception with high sound intensity. The internal resistance is very low and therefore this lamp type adapts well to speakers with low AC resistance.
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