Created circa 1960, to handle the parts and service operations for Philips group brands: Philips, Stella, Cossor, Ada and Peto Scott.
A fairly large selection ( The gallery of optoelectronics contains all the vacuum and gas-filled valves used for display or light detection.
Included are tuning indicators, photocells, flash tubes, a vidicon and a photomultiplier. Howe on the fiftieth anniversary of Fleming's invention of the first electronic valve.
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Like just about every other projection set of the time, the set uses the Schmit optical system and the 2½-inch Mullard MW6/2, with a seperate ringing choke oscillator to generate the enormouse 25KV it requires. The latter could be re-tuned to any of the then five channels, although they were pretuned before leaving the factory.
The channel can be identified by the colour of the attnuator cover, visible in the above photo as a yellow square, yellow being for London, single sideband.Production started in Hammersmith and two years later, moved to larger premises at Balham.The Dutch NV Philips Gloeilampenfabrieken company took a 50% share in the company (Mullard required funds to develop his company) in 1924 and acquired full control in 1927. He joined Ediswan in 1915, saw service in WW1, where he was involved in transmitting valve development.To learn more about Amazon Sponsored Products, click here.The pre-war British valves gallery pictures nearly sixty valves from the era before U. and European valves became more or less standardised and equivalent. A few foreign valves, as would have been used in the U. The valve boxes gallery presents pictures of over 130 different boxes from all periods of valve manufacture from the early 1920s to the present day.Each book also has short data on some obsolescent types, circuits, articles on construction and lists of valve sets for commercial radios and kits.