| 摘要 |
A driving circuit for an electric consumer (20) with a first current source driving element (T2) connected in series with the electric consumer has a second current source driving element (T3) that forms together with the first driving element (T3) a bistable trigger circuit. In its first switching state, the bistable trigger circuit allows current to flow through the electric consumer (20). When a fault occurs, as an unacceptably high current through the electric consumer (20), the bistable trigger circuit goes into its second switching state and interrupts the flow of current through the electric consumer (20), thus avoiding overloading the first current source driving element (T2).
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