Antique radios, Old Time Radios
T-DDS
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Country:
Netherlands
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| Identical to |
T-DDS
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| Production stop |
1935 |
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
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| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference.
Internal resistance 1000 ohms.
DDS = Diode Detector Schaaper. E. Schaaper made licence free radio schematics and sold radio parts of his own brand. When diode detection became a topic in the early 1930's, Thermion made the T-DDS for him.
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| Information source |
- - Manufacturers Literature 1933
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Just Qvigstad
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