Solid state relay

Details Solid state relay Solid state relay

1975-10-16

1977-09-27

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307114, H01H 4722

Patent

active

040515478

ABSTRACT:
An electrical relay control circuit device which is connected to a controlling load such as a motion picture machine from a power source, and to controlled load such as the room lights, so that when the machine is in operation, the room lights cut off, and when the machine is cut off, then the room lights are turned on. The circuitry includes a transformer the primary of which carries the current to the controlling load, so that the secondary exhibits voltage when the controlling load is in operation, there being a relay switch for opening the circuit to the room light load, and Triac means for controlling the relay switch.

REFERENCES:
patent: 2507976 (1950-05-01), Hull
patent: 3418488 (1968-12-01), Platzer
patent: 3462233 (1969-08-01), Matthews

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