(7.) Birnbach, C., and Kappenman, J., "High Power Cold Cathode Electron Tubes
for Power Electronics Applications," EPRI HVDC & FACTS Conference Proceedings, August 2011.
Developed by Thales Microwave & Imaging Sub-systems R&D teams, both in France and Germany, TWT incorporates the performance and reliability of Thales' electron tube
The five businesses are home electric appliances, information technology solutions, medical systems, materials and components and electron tubes
Historically, especially in the early days of electron tubes
, vacuum practitioners were concerned with "clean-up" of the residual gases and needed to "get" them.
Components manufactured by the company include passive components, electron tubes
and lithium niobate wafers for the telecommunications, automobile and consumer electronics market.
This part of the group specialises in semi-conductors, passive components, electron tubes
and electromechanical components, with annual sales of pounds 4billion and a 47,000-strong workforce.
and Thomson Electron Tubes
and Devices Corporation.
Cade's company, which sells such components as electron tubes
and fiber-optic conductors to AT&T and the federal government, grossed $800,000 in sales last year.
At Bell Labs he worked primarily on electron tubes
. Particularly notable was his work on space charge between parallel electrodes and his wartime work on the TR-box--a switch that disconnects the receiver of a radar when the radar is transmitting and prevents the sensitive receiver from being destroyed by the high-power transmitter.
The report predicts that solid-state amplifiers will replace high-power electron tubes
in many applications.