| 摘要 |
PURPOSE:To avoid a phenomenon in which two transistors become simultaneously ON by connecting a resistor and a saturable reactor in series with both ends of a drive winding and further connecting a bidirectional semiconductor switch with both ends of the resistor. CONSTITUTION:A pair of transistors Q1, Q2 of a switching circuit 10 alternately turn ON or OFF an input voltage. An output transformer T1 is connected to the circuit 10. A feedback circuit 20 receives an output of a feedback winding L3, and applies an output to a drive transformer T2 of the circuit 10 through a drive winding L4. A resistor R1 and a saturable reactor SC are connected in series with the both ends of the winding L4, and a bidirectional semiconductor switch D2 is connected with the both ends of the resistor R1. The switch D2 is turned ON or OFF by the output of a separately provided oscillator. |
