In the dynatron and transitron circuits, a vacuum tube is biased so that one of its electrodes has negative differential resistance.
12.
Both Rebecca II and Eureka II were developed by Murphy Radio with early pre-production of Rebecca II by Dynatron Radio.
13.
In the 1918 issue of the Proceedings of the IRE he published a paper on the dynatron vacuum tube which he had invented.
14.
He invented the dynatron vacuum tube which had three electrodes : a thermionic cathode, a perforated anode, and a supplementary anode or plate.
15.
An exception to this are models from certain manufacturers which have become collectable such as Hacker Radio Ltd ., Dynatron, Blaupunkt, SABA.
16.
The firm began in a room above the family grocery shop in Maidenhead High Street, and the first product emerged in 1928; the Dynatron U53 radiogram.
17.
The Dynatron range had always been aimed at the top of the market, but achieving this in post-war times was always going to be problematic.
18.
The negative resistance operating region of the tetrode is exploited in the dynatron oscillator, which is an example of a negative resistance oscillator . ( Eastman, p431)
19.
During the Second World War, Dynatron contributed to the war effort on a not for profit basis, expanding the work force from around 70 employees to 160.
20.
Ekco bought the Dynatron business in 1954 and the Ferranti brown goods brand in 1957 ( though not Ferranti's heavy industries, defence electronics or meter businesses ).
