Dynatron Oscillator Circuit
Dynatron can refer to: * Dynatron oscillator, type of vacuum tube electronic oscillator circuit * Dynatron Radio Ltd, British electronics company (1927-55) * Dynatron (music producer) Jeppe Hasseriis (born December 26, 1980), known under the alias Dynatron, is an electronic and synthwave music producer from Denmark. He started making his own music in 2012. His works are heavily inspired by movies such as Alien and Blade Runne ...

Dynatron Oscillator
In electronics, the dynatron oscillator, invented in 1918 by Albert Hull at General Electric, is an obsolete vacuum tube electronic oscillator circuit which uses a negative resistance characteristic in early tetrode vacuum tubes, caused by a process called secondary emission. on Peter Millet'Tubebookswebsite It was the first negative resistance vacuum tube oscillator. The dynatron oscillator circuit was used to a limited extent as beat frequency oscillators (BFOs), and local oscillators in vacuum tube radio receivers as well as in scientific and test equipment from the 1920s to the 1940s but became obsolete around World War 2 due to the variability of secondary emission in tubes. Negative transconductance oscillators, such as the transitron oscillator invented by Cleto Brunetti in 1939, are similar negative resistance vacuum tube oscillator circuits which are based on negative transconductance (a fall in current through one grid electrode caused by an increase in voltage on a ...
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Dynatron Radio Ltd
Dynatron Radio Ltd was the trade name used by H.Hacker & Sons for their wireless products. The firm started trading in 1927 and operated independently until being bought by Ekco in 1955. The rights to the Dynatron name are currently held by Roberts Radio. Dynatron was also a successful business with making record players; most of them were made in the sixties and seventies. Priced in the pro-sumer market sector, the average household would have had to save the equivalent of three weeks salary to buy one. Early history The Hacker brothers, Ron (born 1908) and Arthur (born 1910), shared a strong interest in radio, and started a company producing high quality radiograms and wireless receivers at the ages of just 19 and 17 respectively. As they were too young to become directors of a company, the firm was set up using their father's name, Harry Hacker, in 1927. The firm began in a room above the family grocery shop on Maidenhead High Street, and the first product emerged in 1928 - the ...
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