Two wire air gap off power supply

Details Two wire air gap off power supply Two wire air gap off power supply

1997-08-08

1999-01-05

Elmore, Reba I.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307116, 36414005, H01H 4700, G05B 1101

Patent

active

058569057

ABSTRACT:
A power supply circuit is provided for selectively connecting and disconnecting a load from an alternating current power source having neutral and line conductors which comprises a transformer having a primary winding connected to the load and a secondary winding, a relay connected at one terminal thereof to the primary winding and connected at another terminal thereof to the line conductor, a control circuit connected to the relay and operable to open and close the relay, the relay being operable to provide power to the load when closed and to disconnect the line conductor from the primary winding when open, a rectifier circuit connected in parallel with the secondary winding, and an air gap switching mechanism connected to the relay and the control circuit and operable to open the relay when the air gap switching mechanism is activated.

REFERENCES:
patent: 4340826 (1982-07-01), Muchnick
patent: 4367510 (1983-01-01), Watanbe
patent: 4433356 (1984-02-01), Wyott
patent: 4713598 (1987-12-01), Smith
patent: 4874962 (1989-10-01), Hermans
patent: 5508878 (1996-04-01), Pecore
Product Brochure for Hubbell H. Moss Passive Intrared Wall Switch Sensor Models 1500A & 750A, 1993.

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