Temperature discrimination apparatus

Details Temperature discrimination apparatus Temperature discrimination apparatus

1974-12-06

1976-02-10

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

219501, 307310, H03K 1772

Patent

active

039379892

ABSTRACT:
A temperature discrimination apparatus is disclosed which comprises a first switching device exhibiting regenerative switching action at a power level which is dependent on the temperature sensed by such first switching device, a second switching device exhibiting regenerative switching action solely in response to a pre-selected power level, means connected to the first and second switching devices for determining if the first switching device has switched before the second switching device in the cycle of the a.c. power source as the magnitude of the voltage increases from zero. This will serve as an indication that the temperature to be sensed has been reached.

REFERENCES:
patent: 3475677 (1969-10-01), Swinehart et al.
patent: 3648074 (1972-03-01), Nurnberg
patent: 3700933 (1972-10-01), Harkenrider et al.

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