E 424N
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BrandPhilips
ClassTriode
BaseS VII
Filament4V @ 1000mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 1 Voltage-1.3 V
Cathode Current15 mA
H-C Voltage50 V
Audio Performance
Key Features
- Miniwatt
- Detector
- L.F. amplification
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal | 200V | 2400 | 10000 | 24 | 6mA |
| Maximum Slope | 200V | 3500 | - | - | - |
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