| 摘要 |
PURPOSE:To enable to obtain stable oscillating period by applying a voltage induced in the feedback winding of an output transformer directly with an oversaturable reactor and controlling the state of the feedback of a feedback circuit in response to the saturated state of the reactor. CONSTITUTION:A saturable reactor SC forms part of a feedback circuit 2, and the saturated state of the reactor SC is detected by transistors Q3, Q4. In other words, the transistors Q3, Q4 are controlled ON or OFF by the variation in the voltage induced in the reactor SC. The transistors Q3, Q4 are connected to the primary winding L4 of a drive winding T2, and when the transistors Q3, Q4 become ON, the winding L4 is shortcircuited, and the feedback loop is interrupted. |
