Temperature controller system

Details Temperature controller system Temperature controller system

1986-02-14

1987-09-08

Paschall, M. H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219501, 219413, 323366, H05B 102

Patent

active

046925988

ABSTRACT:
A temperature controller for an incubator or an oven for keeping the temperature in a chamber at a constant level by controlling the energization of heaters. The temperature controller is provided with two temperature control systems, each of which comprising a sensor for detecting the temperature in the chamber, a thermostat for setting a temperature which is aimed at in the chamber, an error amplifier for detecting a difference between both output levels of the sensor and temperature setting means, and an electric power control circuit for controlling the energization of the heaters in correspondence with the output pulse-length of the circuit.

REFERENCES:
patent: 4307775 (1981-12-01), Saunders et al.
patent: 4309592 (1982-01-01), Le Boeuf
patent: 4320285 (1982-03-01), Koether
patent: 4393300 (1983-07-01), Proctor

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