✦ LIBER ✦

A thermostat control unit

✍ Scribed by Vodden, H. A.

Publisher: Wiley (John Wiley & Sons)
Year: 1950
Weight: 244 KB
Volume: 69
Category: Article
ISSN: 0368-4075
DOI: 10.1002/jctb.5000690204

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✦ Synopsis

Abstract

A sensitive electronic thermostat control unit is described in which a thermistor is used as the sensing element. The output from the thermistor bridge network, after amplification, provides grid potential amplitude control of the current in a gas‐filled triode, the anode circuit of which contains the heating element. The unit is of the proportionate control type, and it can readily be adjusted to provide temperature control to within 0·025°C. at temperatures up to 120°c.

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