Device for starting and operating gas discharge lamp in motor vehicle switches off power switch after delay if signal output by current detector reaches signal defined by limiter

摘要

The device has a primary clocked switching regulator for supplying a lamp controler, a device for detecting the switching regulator output power, a regulator that produces a control signal for influencing the primary current, a control signal limiter, a clock generator, a current detector and a comparator that switches off a power switch after a delay if the signal output by the current detector reaches the signal defined by the limiter. The device has a primary clocked switching regulator (2) for supplying a lamp controler (3), a device (4) for detecting the output power of the switching regulator, a regulator (5) that produces a control signal for influencing the primary current, a control signal limiter (6), a clock generator (12), a current detector (11) and a comparator (13). The comparator switches off a power switch (10) after a delay if the signal output by the current detector reaches the signal defined by the limiter.