| 摘要 |
PURPOSE:To stabilize an output of a power source having a light weight and a small size by adding switching power sources of low power by several DC output units, detecting the outputs, and feeding back the detection signal to the switching power source of one stage. CONSTITUTION:n pieces of switching power sources #1-#n of low power are combined, an isolation of withstand voltage is taken at a high frequency transformer 6, connected in series by the output units of an output rectifier 7, an output voltage is added to form the prescribed high voltage power source. The variation in the output voltage is detected by a voltage divider 9, and a difference between the detected output and a reference signal is obtained by a comparator 10. The gate circuit 2 of the power source #1 is controlled by the output of the comparator 10 to turn ON and OFF a switching element 1, thereby maintaining the output voltage constant. |
