Proximity switch

Details Proximity switch Proximity switch

1979-09-18

1982-05-04

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307308, 307252P, 328 5, H03K 326, G08B 1318

Patent

active

043284337

ABSTRACT:
A proximity switch with two connecting wires for switching an alternating current is described. The switch comprises a rectifying circuit, a thyristor connected across the output terminals of the rectifying circuit, a stabilized power circuit connected across the output terminals for supplying a d.c. power to a detection circuit. The thyristor is provided with a triggering circuit which is connected between the anode and gate terminals of the thyristor and consists of a transistor and a Zener diode connected in series.

REFERENCES:
patent: 3851322 (1974-11-01), Compoly et al.
patent: 3969672 (1976-07-01), Wallander et al.
patent: 4138709 (1979-02-01), Colwill
patent: 4168443 (1979-09-01), Periot
patent: 4193023 (1980-03-01), Buck et al.

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