Summary
Alternative Name(s): Thermionic Electron Valves
Two valves mounted on a display block. General purpose triode electronic valves, designed for amateur use. These valves are equivalent to the American type UV199. They have a 3.0 Volt directly heated cathode. Manufactured by Philips, in Holland, circa 1925.
These valves are believed to have previously been used or collected by Francis West Chambers (1861-1928), who from 1909 held the position of electrical inspector for the Public Works Department of Victoria, with responsibility for supervising municipal power supply undertakings, and later held a similar role with the State Electricity Commission of Victoria from 1921. During the early 1900s he had collaborated with Henry Walter Jenvey in the first experimental wireless telegraphy experiments in Australia.
Physical Description
Two valves on a wooden display block, with labelling. Valve No.1: Conical glass bulb with American style short 4 pin (UV) base mounted on display block. Valve No.2: Tubular glass bulb on small diameter (UV199 style) 4 pin base with metal shell.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mr E. W. Chambers, 02 Jul 1948
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Manufacturer
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Past Owner (Probable)
Mr Francis W. Chambers, Mount Eagle, Heidelberg, Greater Melbourne, Victoria, Australia, circa 1926-1928
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Inscriptions
Valve No.1: On one side of bulb: A310/PHILIPS/Miniwatt/Sold for/amateur use only On other side of bulb: 2,7-3,3 V/20-100V/Made in Holland Valve No.2: Bulb: N/PHILIPS/Miniwatt/A310/Sold for amateur use only/3,.06amp/40-100V/Made In Holland/NOM Display block: Description and filament rating.
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Model Name or Number
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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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Part Dimensions
85 mm (Length), 40 mm (Outside Diameter)
Dimensions of Valve No.1. Dimensions not including display block.
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Part Dimensions
80 mm (Length), 28 mm (Outside Diameter)
Dimensions of Valve No.2. Dimensions not including display block.
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Other Dimensions
100 mm (Length), 51 mm (Width), 34 mm (Height)
Dimensions of wooden mounting block.
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Keywords
Electronic Components, Electronic Valves, Thermionic Electron Valves