Parking lamp operating system

Details Parking lamp operating system Parking lamp operating system

B - Operations, Transporting

60

Q

315/2

B60Q 1/48 (2006.01) B60Q 9/00 (2006.01)

Patent

CA 2021931

PARKING LAMP OPERATING SYSTEM ABSTRACT OF THE DISCLOSURE A parking lamp operating system reduces the electrical load on the battery of a vehicle, such as a truck, during periods when the vehicle engine is off but the parking lamps of the vehicle remain on wherein a switched signal input from the battery is modulated to provide a pulse-width- modulated output to the gate of a power transistor having a power input from the battery and an output to the parking lamps. The pulsed signal causes the transistor to intermittently switch the power to the lamps thereby reducing the effective voltage thereto while providing sufficient light output to be observed. The modulator may be bypassed by a second signal line connected to the vehicle alternator to provide a continuous signal to the transistor gate, thereby providing full power to the lamps when the engine is running.

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