Summary
Double diode triode, used in radios as detector, AVC rectifier and audio amplifier (Class A), manufactured by Philips, probably in Holland. The side contact base used on this valve was introduced by Philips and Telefunken in 1934 and was used by them and some others until the 1940s. This base was widely referred to as the "P" base. It was designed to retain the valve in its socket but it made the valves hard to remove and frequently the bulb would separate from the base before the base from the socket.
6.3 volt indirectly heated cathode.
Physical Description
Glass envelope with red metallic screening sprayed on. 8 pin side contact ("P") base with top cap.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mrs F. Jeffery, 07 Jun 1976
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Manufacturer
Philips, Holland, circa 1937
The valve was probably manufactured in Holland. -
Inscriptions
Bulb: Philips Miniwatt EBC3
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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
86 mm (Length), 30 mm (Outside Diameter)
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References
[Book] Stewart, Finlayson (Fin). 1995. Illustrated History of Philips Radio Valves to 1935., 1960, 55 Pages
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Keywords