Festo Ag & Co

Festo Ag & Co. Kg

Walter Suchy

Kurt Stoll

Jochen Franz

Otto Szenn

Jurgen Bock

Peter Ruhle

Jörg Ullmann

Heinz Röckle

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.

Circuit device

A plug connector having a main body, which has at least one connecting unit including an opening delimited at the side of an elongated transversely elastic gripping rib. The opening constitutes a plug socket, into which a plug element may be inserted and acted upon by the gripping rib. The gripping rib has a concave shaped longitudinal edge portion facing away from the plug socket such that the width of the gripper rib increases toward the two ends of the rib.

Plug connector means with gripper rib

Growing community of inventors

Stuttgart, Germany

Walter Suchy