Dialable ampere current source with ovenless construction and ppm/h stability

This paper describes the design and construction of a highly stable, dialable current source developed for use with an electron beam transport system. The current regulator is ovenless and employs thermal feedback to cancel effects of ambient temperature variation and self‐heating in the current‐sen...

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Bibliographic Details
Published in:Review of scientific instruments 1977-03, Vol.48 (3), p.229-231
Main Authors: Norris, C. B., Stuart, D. T.
Format: Article
Language:English
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Summary:This paper describes the design and construction of a highly stable, dialable current source developed for use with an electron beam transport system. The current regulator is ovenless and employs thermal feedback to cancel effects of ambient temperature variation and self‐heating in the current‐sensing resistor. The regulator is of modular design and incorporates remote control features to facilitate use in applications requiring many current channels. The output current can be modulated to permit Monte Carlo beam optimization. The output stability is better than ±1 ppm/h at an output current of 1 A, in an environment subject to ±1 °C temperature variation, measured using instrumentation having a nominal stability of ±1.5 ppm/h.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1134994