Vehicular signal light control system

Details Vehicular signal light control system Vehicular signal light control system

1976-12-16

1977-07-19

Yusko, Donald J.

Communications: electrical

Selective

Having indication or alarm

340 81F, B60Q 100

Patent

active

040371956

ABSTRACT:
A signal light control system for an automotive vehicle includes silicon-controlled-rectifiers of the gate-turn-off type (GTO), individual ones of which are used to selectively control the conduction of current to signal lamps mounted at the left-front, right-front, left-rear, and right-rear locations on the vehicle. A digital logic network is responsive to the conditions of the turn, hazard, and brake switches of the vehicle, and to the pulse train of a flasher circuit enabled during active conditions of the turn and hazard switches, for selectively applying appropriate control signals to the gate electrodes of the GTOs, to turn on and off the GTOs as required to operate the signal lamps during right and left turn conditions of the turn switch, braking of the vehicle, and the emergency condition of the hazard switch.

REFERENCES:
patent: 3742447 (1973-06-01), Sognefest et al.
patent: 3925757 (1975-12-01), Kimmelman
patent: 3952209 (1976-04-01), Shaklee et al.

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