Device for detecting switching states and reducing switch rest currents, has source for supplying pulses to currently closed switch, and device for detecting switch states from switch voltages

摘要

The device has at least one circuit arrangement with several switches (20-22), each associated with an individual resistance value and connected to a supply voltage, and a detection/supply unit (3) with a current source for supplying defined current pulses to the currently closed switch and a detection device (31) for detecting the switching states from the voltages on the switches. AN Independent claim is also included for a method of detecting switching states and reducing rest current of switching devices.