Tube-number record
TH 177
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BrandTHOMSON-CSF
ClassTransmitting Triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage14000 V
Plate Dissipation30000 W
Grid 1 Voltage-1500 V
Cathode Current40000 mA
Audio Performance
Key Features
- Water cooled
- Transmitting triode
- Thoriated tungsten cathode
- For R.F. industrial generators
- Dielectric heating applications
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Industrial Oscillator Case 1 | 8500 V | 30000 | — | 23 | 4800 mA |
| Industrial Oscillator Case 2 | 12000 V | 30000 | — | 23 | 3800 mA |
| Industrial Oscillator Case 3 | 12000 V | 30000 | — | 23 |
Application Notes
The TH 177 is used as an oscillator in R.F. industrial generators. The anode is equipped with a removable cooler that can dissipate 30 kW. Operating position is vertical, anode down.
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