Circuit arrangement for controlling semiconductor light source, has microcontroller and driver circuit, where potential difference exists between microcontroller mass and circuit mass, and microcontroller power supply provided with voltage

摘要

The arrangement has a control circuit i.e. microcontroller, and a driver circuit, where potential difference exists between a microcontroller mass (15) and a circuit mass. A microcontroller power supply of the control circuit is provided with an output direct current voltage (11), and an output of the control circuit is connected with an input of the driver circuit. The power supply is arranged between the output direct current voltage and a microcontroller mass.