Westinghouse Electric Corporation

Ronald J Weisner

James F Sutherland

Henry F Cook

A self-testing contact closure test circuit and method in which invalid logic states are artificially created in order to simulate a switch malfunction, and thus to determine whether the testing circuitry correctly identifies the invalid state. The system is designed to be used with switches such as those incorporating form 'C' arrangements having two pairs of contacts which under normal circumstances are in opposite states.

Growing community of inventors

Plum Boro, PA, United States of America

Ronald J Weisner