| 摘要 |
A switched bridge circut has semiconductor bridge elements (T1,T2) which are arranged to provide a commutated output from a d.c. source (+300V). The commutation is effected by a switching signal from a control circuit. The control circuit for switching the bridge elements is coupled with the output by a capacitor (C2) such that switching of the bridge elements is prevented whilst there is a flow of current through the capacitor, the current through the capacitor is indicative of a changing output voltage and a confirmation that the voltage across the bridge elements is not approximately zero or +300V. |
