Electronic latch circuitry

Details Electronic latch circuitry Electronic latch circuitry

1987-03-09

1988-11-22

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361194, 219 1055B, 219 1055C, H05B 668

Patent

active

047870087

ABSTRACT:
A relay coil associated with a pair of contacts connects an electrical source to a load. Actuation of a coil sensing element by a trigger input signal supplies current to the coil. In response to the trigger input signal the load sensing element supplies a latch maintain signal to a switching element which becomes conductive to establish current flow to the load. As long as the load sensing element detects current to the load the switching element remains conductive for a "latched" state. Interruption of current to the load converts the elements to an "off" state until another trigger input signal is transmitted to the load sensing element.

REFERENCES:
patent: 4533810 (1985-08-01), Harmon et al.
patent: 4670810 (1987-06-01), Valeur

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