Proportional temperature control system incorporating a linear d

Details Proportional temperature control system incorporating a linear d Proportional temperature control system incorporating a linear d

1976-12-01

1978-02-07

Schaefer, Robert K.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

307293, 328127, 236 1E, 219486, H02J 314

Patent

active

040728668

ABSTRACT:
A proportional temperature control system using a linear time delay circuit provides an output voltage that is similar to the output voltage of a thermostat but delayed in time. The delay circuit is a linear rate time delay system that compares a called for voltage shift at its input to the output voltage of an integrator circuit to provide a substantially linear rate of time delay. The comparator circuit and the integrator circuit are separated by a limiter so that regardless of the amount of the initial offset in voltage at the comparator, the rate of integration is always maintained the same.

REFERENCES:
patent: 3390341 (1968-06-01), Kline
patent: 3667055 (1972-05-01), Uchida
patent: 3729615 (1973-04-01), Harris
patent: 3814352 (1974-06-01), Grimes
patent: 3836791 (1974-09-01), Galloway

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