Controlling vehicle lighting loads

Details Controlling vehicle lighting loads Controlling vehicle lighting loads

1997-01-21

1998-06-16

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

315 77, B60L 114

Patent

active

057675902

ABSTRACT:
In the circuitry of this invention, variable DC voltage input is supplied to a pre-drive section through an input resistor. The value chosen for the resistor sets the base current which determines the gain of the pre-drive circuitry. The available gain controls the base current into the output driver which, in turn, supplies an output voltage to a load. The shape of the output curve is controlled by the available gain of both the pre-drive and drive circuitry. A control controls the pre-drive through a second resistor. The control also controls the power supplied to a second load through a second drive.

REFERENCES:
patent: 5268616 (1993-12-01), Dean et al.
patent: 5381074 (1995-01-01), Rudzewicz et al.
patent: 5463278 (1995-10-01), Gray
patent: 5563622 (1996-10-01), Person et al.

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