Antique radios, Old Time Radios
157957
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Country:
United States of America (USA)
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| Identical to |
157957
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Industrial |
| Filament |
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| Description |
This mercury arc rectifier operates on a maximum of 30 amps and was designed for DC power stations using the AA and AN 20 and 30 amp type AST DC power supply systems.
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| Information source |
- - Manufacturers Literature Westinghouse Cooper Hewitt booklet July 1921
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