A circuit device for the regulation of the coil current flowing through a solenoid coil arrangement is proposed. It comprises a regulating means having a measuring arrangement for measuring the coil current and adapted to regulate the coil current in a manner dependent on the measured coil amperage, means for producing a attraction current, which regulated by
clock pulse switching, flowing through the solenoid coil arrangement and a switching over means for reducing the coil current after elapse of an attraction time to a lower
clock pulse switched hold current flowing until the end of a switch
signal. The measuring arrangement is switched outside the
freewheel circuit in which during the
freewheel condition, existing in
clock pulse switching intervals, of the solenoid coil arrangement the
freewheel current flows. This means that the input
voltage does not have to be adapted to the desired attraction current and the freewheel current does not produce any
power loss in the measurement arrangement.