| 摘要 |
PURPOSE:To easily achieve the desired oscillating performance by constituting the smoothing circuit in a driving circuit with the first capacitor, a resistor and the series circuit of the second capacitor. CONSTITUTION:A smoothing circuit 26 to be connected to the feedback winding of a transformer 13, through an intermediate of a rectifying device 25, is constituted including the series circuit which is consisted of the first capacitor 27, a resistor 28 and the second capacitor 29 connected in parallel to the first condenser 27. Even in the case of a nonsmoothing rectified power source, the degree of freedom of constant setting on the smoothing circuit is improved and a stabilized optimum driving current can be supplied. |
