Summary
451 diode, made by Philips, Holland.
It was used as full-wave rectifier used in Philips battery chargers.
It has a 1.8 volt directly heated cathode.
Physical Description
Four-pin English style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Purchase
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Manufacturer
Philips (N.V. Philips Gloeilampenfabrieken), Holland, Netherlands, circa 1926
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Inscriptions
On bulb: Sold for amateur use only Made in Holland On other part of bulb: PHILIPS No. 451
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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
107 mm (Length), 34 mm (Outside Diameter)
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References
[Book] Stewart, Finlayson (Fin). 1995. Illustrated History of Philips Radio Valves to 1935., 1995, 46 Pages
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Keywords