(7.) Birnbach, C., and Kappenman, J., "High Power Cold Cathode Electron Tubes
for Power Electronics Applications," EPRI HVDC & FACTS Conference Proceedings, August 2011.
Paris, France 8/23/05 -- Photonis Holding SAS has acquired Burle Industries, a manufacturer of specialized electron tubes
and electro-optic products, including photomultiplier tubes, Channeltron mass spectrometry detectors and advanced performance detectors.
The chapter Circuits Based on Semiconductor Devices, after a brief mention of electron tubes
, covers the most important semiconductor devices, diodes and transistors, and their applications such as oscillators, small signal, low-noise and power amplifiers, reflection amplifiers, frequency converters and multipliers as well as detectors.
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.
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.