Patent ID: 7057871

Claim:
An actuation circuit for an electromagnetic actuator ( 10 ) having an electrical time constant and a switching threshold and comprising an energy store ( 11 ) connectable to a supply source, said energy store ( 11 ) being adapted to be connected by at least one switch (S 1 ,S 2 ) to the actuator ( 10 ), the energy store ( 11 ) being configured to supply, after connection with the actuator ( 10 ) and within a period of time which is shorter than the electrical time constant of the actuator ( 10 ), one of a current and a voltage of predetermined magnitude which exceeds the threshold (I s , U s ), the energy store ( 11 ) including an LC chain of a plurality of series-mounted inductors ( 27 ) and transversely mounted capacitors ( 28 ), and the LC chain having a first end that is connected with poles of a DC source and a second end which is connected by two poles (Al, A 2 ) with a series circuit containing the actuator ( 10 ) and the at least one switch (S 1 , S 2 ).