Method for supply of a number of lamps from a DC supply with higher voltage than nominal voltage of lamps, uses temporal displacement of switching transistors in series with each lamp to reduce supply fluctuation

摘要

The supply uses current chopping to allow supply of lamps operating at a lower voltage than the vehicle electric supply. The lamps (L1,L2) are supplied with a chopped current through MOSFET switches (Q1, Q2), which are switched at different points in time to offset the current peaks demanded of the supply (12).