Summary
The F209A was equivalent to the American type UY227; it was amongst the first indirectly heated valves made by Philips, released in 1928. It was a general purpose triode with a 2.5 volt indirectly heated cathode. It was re-named PH227 in the early 1930s.
Manufacturer: Philips, Holland
Physical Description
Conical bulb with 5 pin American style (UY) brown Bakelite base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from P. Bullen, 03 Feb 1982
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Manufacturer
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Inscriptions
Bulb: PHILIPS/F209A/2,5V*MINIWATT 200V/(paper test label)70%
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Classification
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Type of item
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Overall Dimensions
104 mm (Length), 45 mm (Outside Diameter)
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