| 摘要 |
PURPOSE:To simplify the circuit configuration and provide adjustability for output by feeding back the vibration current of a load circuit to the control end of one of the transistors, and On/Off controlling the other transistor by a control means incl. a timer circuit, which is operation under the period while the first named transistor is not turned on. CONSTITUTION:Existing invention comprises a load circuit Z, which is in parallel connection with one of a pair of switching elements (transistor) Q1, Q2 through a capacitor C0 and which includes a series circuitry of an inductor L1 and a load l, a feedback means, i.e. a feedback winding n2, which is to feed back the vibration current flowing in this load circuit Z only to the control end of the transistor Q1 and on/off controls only this transistor Q1 at certain intervals determined by the vibration current, and a control means, i.e. control circuit X, which on/off controls the other transistor Q2 with the aid of a timer circuit 3 operating during the Off period of the transistor Q1. Thereby the output current to the load l can be set any desired with a simple constitution. |
