| 摘要 |
<p>An overvoltage protection circuit for protecting a DALI bus against inadvertent connection of the mains comprising a current source (Q1, Q2, R4, R6, R7) switched in response to a voltage monitor (R1, R2, R3, R8, C1, D1, Q4). The circuit switches off rapidly and on slowly to prevent partial mains supply during fault conditions.</p> |
