Antique radios, Old Time Radios
220_Ballast
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Country:
United States of America (USA)
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| Identical to |
220_Ballast
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| Similar
Tubes |
Other characteristic (electr. data):
3-40
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| Filament |
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| Description |
Used in 220V AC-DC Sets - see Lafayette Rider's page 7-5 where an Amperite type 3-40 is used for 105 - 125 volts and Amperite type 220 for 220 - 250 volts.
Text in other
languages (may
differ)
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| Information source |
Ballast Tube Handbook, The
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