| 摘要 |
The invention relates to a circuit arrangement comprising two input terminals (A1, A2) for connecting a drive voltage (Uin,DC/AC) and two output terminals (Q1, Q2) for connecting a load (L). The two inputs (A1, A2) of the circuit arrangement can be impinged by drive voltages (Uin,DC/AC) of various types (AC, DC). The load (L) can be supplied with power in accordance with a defined circuit-closing threshold and a defined circuit-breaking threshold of the drive voltage. Said circuit arrangement comprises a subassembly (2) for converting the drive voltage (Uin,DC/AC) into a direct current voltage (Uns,DC) that is linearly dependent on said drive voltage for supplying the load (L), first controllable switching elements (4) for closing and breaking the load circuit, a controller (6, 8) for controlling the first switching elements (4) according to load parameters, elements (10; 10') for discriminating between the various types of voltage of the drive voltage (Uin,DC/AC), elements (12; 12') for detecting the circuit-closing and breaking thresholds, second controllable switching elements (14; 14', 14'') for releasing or blocking the load switching current and elements (9; 9') for controlling the second switching elements (14; 14', 14''), depending on whether the circuit-closing or breaking threshold has been exceeded or not attained.
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