Summary
MR7A rectifier high vacuum half wave. Made by Marconi Wireless Telegraph Co. Ltd. Used in medium & high power transmitters.
Physical Description
Cylindrical glass bulb with necks at each end, supported vertically by metal rod on display board. One filament connection on top; the other is a side arm attchment on cylindrical bulb. Anode connection on bottom of lower neck. Exhaust tip on bulb. Filament with side cantilever tension spring.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Amalgamated Wireless (Australasia) Ltd, 05 Feb 1941
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Manufacturer
Marconi's Wireless Telegraph Company Ltd, England, Great Britain, 1928-1935
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Inscriptions
Bulb: M.R.7.A/RECTIFIER/30901(smudged)/MARCONI VALVE/PATENTED/MADE IN ENGLAND label on display block.
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Brand Names
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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
560 mm (Height), 580 mm (Circumference)
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Keywords