TC 05/25
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BrandPhilips
ClassTriode
Construction
Primary Typetriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialOxide-coated
Absolute Maximum Ratings
Plate Voltage680 V
Plate Dissipation40 W
Cathode Current100 mA
Audio Performance
Power Output68 W
Key Features
- Directly heated
- Oxide-coated cathode
- Low power triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| LF class B amplification (two valves) | 600V | 2200 | - | - | 170mA |
| HF class C telegraphy | 600V | - | - | - | 93mA |
| HF class B telephony | 600V | - | - | - | 44mA |
| HF class C anode modulation | 600V | - | - | - | 95mA |
Application Notes
Used as Oscillator or H.F. amplifier
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