Method and apparatus for safety switch

Details Method and apparatus for safety switch Method and apparatus for safety switch

2005-11-01

2005-11-01

Tanner, Harry B. (Department: 3744)

Automatic temperature and humidity regulation

Motors

Relay

C431S080000

Reexamination Certificate

active

06959876

ABSTRACT:
A circuit in accordance with the invention includes a safety switch device coupled with, and between, a thermally activated voltage source and a primary switch. The circuit also includes a safety switch control circuit coupled with the safety switch device and a controller circuit; and a voltage generation circuit for turning on the safety switch device. The voltage generation circuit is coupled with the safety switch control circuit, the controller circuit and the safety switch device, such that the controller circuit substantially controls operation of the voltage generation circuit, the safety switch control circuit, and a primary switch circuit that includes the primary switch.

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