US Patent 7495357 XRAM generator with an opening switch

A circuit which produces a current pulse through a load element, includes a primary energy storage unit and a secondary energy storage unit which can be charged up by the primary energy storage unit; an opening switching element which is configured to interrupt or establish a connection between the primary energy storage unit and the secondary energy storage unit; and a closing switch, which is configured to interrupt or establish a connection between the secondary energy storage unit and the load element and a counter current element which is connected to the opening switching element such that a counter current flows from the counter current element through the opening switching element when the closing switch is closed.