Spiral accelerator: Difference between revisions
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The '''spiral accelerator''' is a helical resistive coating on a [[cathode-ray tube]] (CRT), designed to minimize beam compression in the post-deflection acceleration system by applying a gradually increasing acceleration voltage along the bulb's length. | [[File:Spiral accelerator.jpg|thumb|400px|right]] | ||
The '''spiral accelerator''' is a helical resistive coating on a [[cathode-ray tube]] (CRT), designed to minimize beam compression in the [[post-deflection acceleration]] system by applying a gradually increasing acceleration voltage along the bulb's length. | |||
It was first suggested in 1938 but not developed into a practical device. | It was first suggested in 1938 but not developed into a practical device. | ||
| Line 11: | Line 12: | ||
* [[Media:062-0852-01.pdf | Oscilloscope Cathode-Ray Tube Concepts]], Chuck Devere, 1969 | * [[Media:062-0852-01.pdf | Oscilloscope Cathode-Ray Tube Concepts]], Chuck Devere, 1969 | ||
<gallery> | |||
Tek 154-0346-00.jpg | Tektronix [[T317]] CRT with spiral accelerator | |||
Tek t5360-31.jpg | [[T5360]] CRT | |||
T55 crt1.JPG | [[T55]] CRT | |||
T55 crt3.JPG | Spiral accelerator detail from T55 | |||
</gallery> | |||
[[Category:Cathode ray tubes]] | [[Category:Cathode ray tubes]] | ||
[[Category:Circuits and Concepts]] | [[Category:Circuits and Concepts]] | ||
Revision as of 13:25, 4 February 2018
The spiral accelerator is a helical resistive coating on a cathode-ray tube (CRT), designed to minimize beam compression in the post-deflection acceleration system by applying a gradually increasing acceleration voltage along the bulb's length.
It was first suggested in 1938 but not developed into a practical device.
In 1952, Howard Vollum revived the idea for the T51 CRT that Tektronix was developing for the 1953 model 535 scope.
The spiral accelerator displaced multi-band acceleration by the 1960s.
Literature
- Peter Keller, The Cathode-Ray Tube: Technology, History, and Applications. Palisades Press, 1991. ISBN 0963155903, 9780963155900, pp.110-114
- Oscilloscope Cathode-Ray Tube Concepts, Chuck Devere, 1969
