Electric lamp and discharge devices: systems – Special application – Vehicle
Patent
1993-03-15
1995-01-17
Bertsch, Richard A.
Electric lamp and discharge devices: systems
Special application
Vehicle
315 83, 315291, B60Q 102
Patent
active
053828771
ABSTRACT:
Disclosure is a vehicle headlamp control system having a control circuit which can control the operation and the intensity of illumination of headlamps with ease. The vehicle headlamp control system has a control circuit for controlling the operations of headlamps on a vehicle at the start of the engine. The control circuit operates to adjust the duty ratios of driving pulse currents applied to the headlamps through transistors, thereby to adjust the intensities of illumination of the headlamps. The control circuit has elements for adjusting the duty ratios. With the system, the intensities of illumination of the headlamps can be adjusted with ease.
REFERENCES:
patent: 3040207 (1962-06-01), Grontkowski
patent: 3769519 (1973-10-01), Adamian
patent: 4841198 (1989-06-01), Wilhelm
patent: 5030884 (1991-07-01), Roussey et al.
patent: 5081565 (1992-01-01), Nabha et al.
patent: 5113120 (1992-05-01), Scott et al.
Katsumata Shuichi
Kawabata Akira
Matsumoto Hironori
Bertsch Richard A.
McAndrews, Jr. Roland G.
Yazaki -Corporation
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