Thermostatic apparatus

Details Thermostatic apparatus Thermostatic apparatus

1981-06-04

1983-03-22

Woodiel, Donald O.

Thermal measuring and testing

Thermal calibration system

374185, 236 94, 338135, G01K 1500, G05D 2300

Patent

active

043773460

ABSTRACT:
In an electronic thermostatic circuit, a resistive bridge network is employed to sense the level of the ambient temperature. The bridge includes three legs having fixed resistors and one leg having a temperature sensitive resistor as well as a serially connected adjustable potentiometer. The adjustable potentiometer is adjustable to provide a selected set point for the operation of the thermostat within a given range of temperatures. The adjustable potentiometer is provided with a shaft to which an adjusting knob having a pointer thereon is secured by means of a slip fastener. Calibration of the assembly is accomplished by turning the knob with its pointer pointed in a preferred direction then holding the knob while adjusting the shaft and the associated potentiometer until the bridge output corresponds with the value indicated by knob pointer.

REFERENCES:
patent: 2921285 (1960-01-01), Neuendorffer et al.
patent: 3164755 (1965-01-01), Holt et al.
patent: 3683304 (1972-08-01), Freeby

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