An improved thermoregulator and circuit for D.C. supply

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Published under licence by IOP Publishing Ltd
, , Citation S J Folley and P L Temple 1935 J. Sci. Instrum. 12 392 DOI 10.1088/0950-7671/12/12/305

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1 National Institute for Research in Dairying, University of Reading

Dates

  1. Received 28 October 1935

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0950-7671/12/12/392

Abstract

An improved form of thermoregulator, having a large surface/volume ratio of toluene bulb, and a mercury seal at either end, is described. A circuit employing a pentode valve is used in conjunction with a relay to reduce sparking at the mercury surface to a minimum. A waterbath at ordinary temperatures can readily be maintained constant to within 0.01° C.

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