Antique radios, Old Time Radios
ESV1500
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Country:
Great Britain (UK)
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| Identical to |
ESV1500
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| Base |
TRANSMITTING & Power-TUBES/VALVES in gen
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 8 Volts / If 26 Ampere / Direct / Specified voltage AC/DC |
| Description |
This tube was designed for Vapour Cooling rather than normal water cooling.
The tube is fitted in a closed loop system where the anode is the heater in a water boiler. The steam created is then condensed and returned to the boiler. The external surface of the anode reaches temperatures above the boiling point unlike that in a water cooled system where boiling is prevented.
Suitably engineered, this can result in a compact system but requires regular checks on water level and quality which must provide good insulation and low contamination - small traces of oil can greatly reduce efficiency due to anode surface effects. Contamination builds up in the water as the volume is much lower than in a normal water-cooled scheme.
Va<8kV; Pa <5kW. f<40MHz
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Dimensions (WHD)
incl. pins / tip |
x 248 x 122 mm / x 9.76 x 4.80 inch |
| Information source |
- - Manufacturers Literature AEI data sheet Dec 1961; Ediswan catalog Jan 1959
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ESV1500: Original data sheet
Michael Poll
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