Switching arrangement for stabilized operation of high pressure discharge lamp in headlight for motor vehicle, has capacitor connected with inverter, such that commutation voltage increases lamp voltage during commutation phase of lamp

摘要

The arrangement has an inverter (22) and an energy storage designed as a capacitor (C1). A decoupling component (10) e.g. resistor and transistor, is switched for producing a potential difference between the energy storage and the inverter. Another energy storage i.e. capacitor (C2), is connected with the inverter such that a commutation voltage (U2) at the latter energy storage causes an increase of a lamp voltage (Ula) during a commutation phase of a high pressure discharge lamp (5). The latter energy storage is connected with both input terminals of the inverter. An independent claim is also included for a method for producing a lamp voltage for stabilized operation of a high pressure discharge lamp.