Circuit for sequentially turning on lamps on an automobile

Details Circuit for sequentially turning on lamps on an automobile Circuit for sequentially turning on lamps on an automobile

1985-12-17

1987-12-08

Dixon, Harold

Electric lamp and discharge devices: systems

Special application

Vehicle

315 77, 307 10LS, 340 82, B60Q 102

Patent

active

047120444

ABSTRACT:
An array of indicator lamps is mounted on the rear of an automobile for signaling turns. When a turn is signaled, the lamps turn on in sequence, thereby creating the impression of motion in the desired direction. Each lamp is coupled to a battery via an associatd relay switch. A control circuit closes the relay switches in sequence, thereby turning on the lamps in sequence. The control circuit includes a set of flip-flops, each relay switch closing in response to an associated one of the flip-flops, which change state in response to a clock signal.

REFERENCES:
patent: 3484626 (1969-12-01), Grafham
patent: 3582980 (1971-06-01), Marks
patent: 3593276 (1971-07-01), Schuler
patent: 3641490 (1972-02-01), Kawai
patent: 3984810 (1976-10-01), Hudson

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