Summary
Power output pentode, used as a class A power output amplifier. Manufacturer: Philips, Holland.
The output pentode was developed by Philips and patented in 1926.
2 volt directly heated cathode.
Physical Description
Conical globe on 4 pin UX style base with side terminal.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from I. E. Morton, 10 Mar 1972
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Manufacturer
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Inscriptions
Bulb: D243/PHILIPS/Miniwatt/Sold for qamateur (sic) use only
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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), 50 mm (Outside Diameter)
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References
[Book] Stokes, John. 1982. 70 Years of Radio Tubes and Valves., 54 Pages
[Book] Stewart, Finlayson (Fin). 1995. Illustrated History of Philips Radio Valves to 1935., 1995, 44 Pages
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