Abstract: A chopped power supply converter is provided comprising, between the two terminals of a DC power supply source, on the one hand a primary inductance (L.sub.p) in series with a chopping means (Tr) and on the other hand a capacitive divider bridge formed by two capacitors (C.sub.1 -C.sub.2), a secondary inductance (L.sub.s) coupled to the primary inductance (L.sub.p) and whose value with respect to this latter depends on the ratio of the capacitive divider bridge (C.sub.1 -C.sub.2), this secondary inductance (L.sub.s) being connected between the output terminal of the divider bridge and the load (P) through a series diode (D.sub.1) and a parallel capacitor (C.sub.3), and a balancing device (E) for permanently rebalancing said divider bridge.

Abstract: An electronic drive system for a discharge lamp is disclosed wherein the switching frequency of the chopper is reduced until the lamp striking voltage has reached about 70% of its rated value. The system includes a chopper transistor, a control for varying the transistors duty cycle and a smoothing inductance, freewheeling diode and smoothing inductor to smooth the chopper output. Current limiting is provided to prevent overcurrent within the chopper transistor, smoothing inductor or lamp.

Abstract: An inductive energy transmission device for firing an igniter which has primary and secondary windings and a fixed magnetic screen designed to be generated by the primary winding.