Electronic switch apparatus

Details Electronic switch apparatus Electronic switch apparatus

1991-07-24

1993-07-20

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307126, 307127, H01H 3500

Patent

active

052296539

ABSTRACT:
An electronic detection circuit such as a proximity switch or flow detector uses a presence detector with complementary outputs and one or more electronic switches to provide either normally-open or normally-closed operation based on the polarity of the supply connections to the device. In one embodiment, two electronic switches are provided, each operating in response to one of the complementary outputs, with each switch connected to provide current flow in a mutually opposite direction between the supply connections upon activation. In another embodiment, a single electronic switch is provided, and is connected through a diode matrix to the complementary outputs.

REFERENCES:
patent: 4672230 (1987-06-01), Spahn
patent: 4672233 (1987-06-01), Scott
patent: 4820935 (1989-04-01), Gontowski
patent: 4958251 (1990-09-01), Cini et al.
Siemens; Integrierte Schaltungen fur Industrielle Anwedungen, datenbuch 1982/83.

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