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The company also designed and made other electronic instruments such as signal generators, valve (vacuum tube) testers and valve characteristic meters and specialist equipment for radio servicing. Many of these were intended for both military and commercial use and were made to a very high standard.
A Mullard TDD4 valve. The gold spray coating served no purpose other than to hide the blackened interior, as Mullard valves were still manufactured using the azide process, long abandoned by other makers. [1] A Mullard EL34 power pentode An EL84 valve made in Russia in the 21st century. Mullard Limited was a British manufacturer of electronic ...
Starting in 1958, EICO produced amateur radio equipment often in kit form, such as the EICO 720 and 730 transmitters. Later in the 1960s they made the EICO 753 SSB transceiver for amateur radio use. Unfortunately problems with the 753--or seven drifty three-- damaged their reputation which led to their decline.
The EWI 5000 and EWI USB also have an electronic valve instrument (EVI) fingering mode that allows brass players to play the EWI. [8] Like a straight soprano saxophone or clarinet, the EWI is straight with a slight inward bend a few inches below the mouthpiece, and it is held in front of the body with a neck strap. Dayna Stephens with an EWI 4000s
Its initial name was the Phoenix Dynamo Co Ltd, though it immediately changed its name to English Electric Valve Company Ltd. In 1959 Bob Coulson established travelling-wave tube and microwave tube sections, and they were producing ceramic hydrogen thyratrons as well. By this time EEV was the largest hi-tech manufacturing company in the UK.
Among these was an electroacoustic clarinet, that featured an electromagnetic pickup for the reed vibration and was connected to a variety of electronic filters. Miessner's patent from 1938 [3] [4] marks the birth of the electronic wind instrument family. [5] Early experiments with fully electronic instruments started in the 1940s.
Anarâškielâ; Aragonés; Asturianu; Azərbaycanca; تۆرکجه; বাংলা; Беларуская; Беларуская (тарашкевіца) Български
Pentodes were widely manufactured and used in electronic equipment until the 1960s to 1970s, during which time transistors replaced tubes in new designs. During the first quarter of the 21st century, a few pentode tubes have been in production for high power radio frequency applications, musical instrument amplifiers (especially guitars), home ...