An electronic process-controller
β Scribed by Boundy, J.R.; Bergen, S.A.
- Book ID
- 119741801
- Publisher
- Institution of Electrical Engineers
- Year
- 1951
- Weight
- 198 KB
- Volume
- 1951
- Category
- Article
- ISSN
- 0368-2692
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π SIMILAR VOLUMES
A system is described in which the vapour pressure of a liquid He 4 bath is monitored by a capacitance gauge, the output of which is used to control the pumping rate of the vapour pump. The pressure is regulated to an accuracy of O. 1% or better over the range 3-1000 mm Hg and the system is usable c
## Abstract An electronic timing device is described, which is designed to operate a magneticallyβcontrolled reflux dividing head for stills using a total condenser. The timing unit is constructed of readily obtainable radio components and can be assembled by anyone with a good knowledge of electri