Summary
General purpose triode, used as Class A amplifier. Manufacturer: Philips. Holland.
2 Volt directly heated cathode.
Physical Description
Conical bulb on four pin UX style base.
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: A209/PHILIPS/Miniwatt/Sold for amateur use only/2 V/20-150 V/Made in Holland
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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
97 mm (Length), 41 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 421 Pages
[Book] Stewart, Finlayson (Fin). 1995. Illustrated History of Philips Radio Valves to 1935., 1995, 42 Pages
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Keywords