Antique radios, Old Time Radios
ThS49
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Country:
Germany
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| Identical to |
ThS49
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Was used by |
Technology / Measurement |
| Filament |
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| Description |
The ThS49 is a thermal relay.
The contacts are normally open and close with a time delay when the heating is activated.
Since the contacts are normally open, this relay can be used to switch on the anode voltage not before the tubes of a device are also heated up.
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Just Qvigstad
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Collection of
Collection of a member from D |
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