Summary
Thermal delay switch used to delay the application of high voltage to mercury vapour rectifiers until their filaments had reached operating temperature.
Slow acting thermal switch encased in valve-type envelope. Unit consists of filament which, at about 8 volts heats a bimetallic element. The latter bends, "making" a contact
Manufacturer: probably Ediswan, England.
Physical Description
Conical bulb with 4 pin European style base.
More Information
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source, 26 Apr 1972
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Manufacturer (Probable)
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Inscriptions
Bulb: 'C'/DLS10/Ref No 10E/189/ESE17
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
112 mm (Length), 45 mm (Outside Diameter)
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References
National Valve Museum (UK) [Link 1] - accessed March 2010.
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Keywords