| 摘要 |
<p>A circuit, a method and an arrangement for operating a bridge circuit are provided. The circuit comprises a start-up circuit for initiating the operation of the bridge circuit, the start-up circuit comprising a capacitive element for receiving a charge upon start-up of the bridge circuit, and a charge controller for providing a start-up signal for initiating the operation of the bridge circuit in response to a voltage at the capacitive element exceeding a predetermined threshold. The circuit further comprises a control circuit for discharging the capacitive element before the voltage thereat reaching the predetermined threshold during operation of the bridge circuit, wherein the control circuit is coupled to the start-up circuit and arranged to receive a control signal from a cathode circuit of the lamp circuit, the control circuit being configured to discharge the capacitive element in response to the control signal.</p> |
