Monitoring apparatus for monitoring temperature in a circuit arr

Details Monitoring apparatus for monitoring temperature in a circuit arr Monitoring apparatus for monitoring temperature in a circuit arr

1988-10-13

1989-07-25

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361106, 361 18, 323271, 323272, 323907, 307310, H02H 504

Patent

active

048519545

ABSTRACT:
Apparatus for monitoring the temperature of a circuit component in a circuit arrangement wherein the circuit can be influenced via a temperature sensor when a predetermined value is exceeded for the purpose of preventing undesired high temperatures. This apparatus is improved for its use in inherently safe electronic switching circuits in that it provides the smallest possible volumetric configuration and, in addition, enables a reliable switching characteristic to be realized which is selectable within narrow temperature ranges. It is intended that the testing of its functional capability should be possible with the aid of simple means when in the built-in condition. For this purpose, a plurality of circuit components are connected in series or in parallel.

REFERENCES:
patent: 3109135 (1963-10-01), Goldman
patent: 3480852 (1969-11-01), Hung
patent: 3794950 (1974-02-01), Kilner
patent: 3959713 (1976-05-01), Davis et al.
patent: 4053996 (1977-10-01), Schertz et al.
patent: 4536699 (1985-08-01), Baker
patent: 4614906 (1986-09-01), Maxham
patent: 4800331 (1989-01-01), Vesce et al.

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