Electrical safety switch for electrical appliances

Details Electrical safety switch for electrical appliances Electrical safety switch for electrical appliances

1982-02-16

1984-05-08

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Reverse phase responsive

361 1, 361 88, 361 50, 307326, H02H 314

Patent

active

044478445

ABSTRACT:
An electrical safety switch for protecting an electrical appliance requiring a ground, an on/off switch disposed in series with a resistor and primary coil of a transformer between the ground line and the B+ line of the appliance, and a triac connected in series with the load of the appliance between the B+ line and the neutral line with the gate triggering the triac connected to the transformer to be energized thereby upon a current being present through the on/off switch.

REFERENCES:
patent: 2922925 (1960-01-01), Gerrard
patent: 3395324 (1968-07-01), Rager, Jr.
patent: 3588603 (1971-06-01), Slugantz
patent: 3665252 (1972-05-01), Rogers, Sr. et al.
patent: 3944891 (1976-03-01), McDonald et al.
patent: 4028594 (1977-06-01), Schossow

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