KL 1
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BrandPhilips Miniwatt
ClassPentode
FilamentV @ mA
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation1.5 W
Grid 2 Voltage100 V
Grid 1 Voltage-0.2 V
Cathode Current12 mA
Audio Performance
Power Output0.4 W
Key Features
- Direct battery heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 90V | 1400 | 80000 | - | 8mA |
| Condition 2 | 133V | 1700 | 100000 | - | 8mA |
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