HF-100
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BrandAmperex
ClassTransmitting Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialCeramic
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1800 V
Plate Dissipation75 W
Grid 1 Voltage-300 V
Cathode Current150 mA
Audio Performance
Power Output350 W
Key Features
- Low voltage high current
- Radiation cooled
- High ratio of transconductance to interelectrode capacitance
- Outstanding efficiency in high frequency circuits
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Audio Amplifier (Two Tubes) | 1500V | - | 4000 | - | 270mA |
| R.F. Power Amplifier Class C Telegraphy | 1500V | 4200 | - | 23 | 150mA |
| Plate Modulated R.F. Power Amplifier Class C | 1250V | - | - | - | 110mA |
Application Notes
The HF-100 is designed for use as an R.F. Power Amplifier, Oscillator, or Class B Audio Amplifier/Modulator. Mounting should be vertical (base up or down) or horizontal with the plane of electrodes vertical.
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