System for supplying electric power to e.g. starter of motor vehicle, has securing device avoiding circulation of recharging current through semiconductor controllable switching unit

摘要

The system (1) has an electric energy storage (22) and a set of semiconductor controllable switching units (17, 21) comprising first and second semiconductor controllable switching units. A securing device (20) secures the first semiconductor controllable switching unit. The securing device avoids circulation of recharging current through the first semiconductor controllable switching unit. The securing device is arranged between the storage and a gate (19) of the first semiconductor controllable switching unit.