Contactless electromagnetic relay

Details Contactless electromagnetic relay Contactless electromagnetic relay

1980-10-14

1982-03-02

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

323368, 324117H, 335298, H01L 4304

Patent

active

043180744

ABSTRACT:
A contactless electromagnetic relay employing at least two magnetically activated electronic switches comprising a coil for generating a field of magnetic flux in response to an electrical current and a pair of magnetic circuits for conveying the flux to the switches. A first switch is "normally on" and a second "normally off" when no flux is generated by the coil, providing a first switching state. A second switching state is achieved by the relay when the coil generates a magnetic flux sufficient to turn off the first switch and turn on the second switch. Each magnetic circuit includes an adjustable core for increasing or decreasing the amount of flux delivered to each switch.

REFERENCES:
patent: 3369206 (1968-02-01), Lundkvist
patent: 3781735 (1973-12-01), Haas
patent: 4218626 (1980-08-01), Fukuda et al.

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