| 摘要 |
<p>The invention relates to a protective circuit (1), particularly for overvoltage-protecting an electronic motor control unit, comprising a signal connection receiving an/or emitting an electrical signal, a switching element (4) which activates or deactivates a protective interrupter and is controllable via a control input, and a control circuit (5), the input side of which is connected to the signal connection while the output side thereof is connected to the control input of the switching element (4) in order to activate or deactivate the protective interrupter according to the electrical state at the signal connection. The inventive control circuit (5) has a hysteresis characteristic regarding the electrical state at the signal connection.</p> |
