An overvoltage protection circuit protects a portable electronic device against overvoltage. The overvoltage protection circuit includes an input unit for receiving an input voltage supplied by a voltage source; a voltage-divider module for dividing the in...

A device (1) for detection of faults in two or more voltage levels motor vehicle power supply networks, where the networks are galvanically isolated in separate power networks (2, 3). Monitoring modules (15-18) and or a monitoring unit (8) are used to moni...

The system has a first conductor system (1) for a higher voltage and a second (2) for a lower voltage. The conductor systems have a first or second protection element (9,10) and contain an electrical load (3,4) and a common voltage reference point. A volta...