YD1140
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ClassPower Triode
BaseK714 water-jacket
Construction
Primary TypeTriode
EnvelopeMetal-glass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation100000 W
Grid 1 Voltage-1200 V
Cathode Current12500 mA
Audio Performance
Power Output106000 W
Key Features
- Water cooled
- Direct heating
- Thoriated tungsten filament
- Industrial oscillator capability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. Class C Telegraphy | 12000V | 60000 | - | 25 | 12000mA |
| R.F. Class C Telegraphy | 10000V | - | - | - | 10000mA |
| R.F. Class C Anode Modulation | 10000V | - | - | - | 10500mA |
| A.F. Class B Amplifier (Two Tubes) | 10000V | - | 1360 | - | 16000mA |
Application Notes
At frequencies above 6 MHz air cooling must be used to keep the anode and grid seal temperatures below 180C. Air flow of 2.5 m3/minute at 30 MHz.
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