| 摘要 |
PURPOSE:To prevent unstable variation in the voltage due to meaningless alteration of a peak current value to hold sampled peak value of the output current in a sample-holding circuit which forms an automatic booster circuit by providing a stabilizer. CONSTITUTION:The output current of a converter 3 is detected by a current detector 6 which produces a detection output (d). A timing circuit 7 outputs a sampling pulse (e) at a timing for generating the minimum value of the detection output (d) immediately after a pulse (b) is inputted. A capacitor 10 is charged through a stabilizer 9 by the output (d) while a switching element 8 is turned ON by the pulse (e). A holding voltage (f) is inputted to a comparator 11 together with the output voltage (v) of the converter 3 and the set voltage (a), the output voltage controller 12 is operated by the output (g) to control the output voltage of the inverter. |
