| 摘要 |
PURPOSE:To enhance energy conversion efficiency by automatically switching the turn ratio of a converter transformer by considering the state of a load during the voltage rising operation. CONSTITUTION:A DC/DC converter 1 has a converter transformer having a DC low voltage power source 2, a power source switch 3, primary and secondary windings 4a, 4b and an auxiliary winding 4c, and a voltage booster 8 having an oscillation transistor 5, a starting resistor 6, and an auxiliary capacitor 7, and further a state detecting means 12 for detecting the state of the load and control means 13 for controlling the operation of a LSCR 11 of a switching element. The means 13 controls the operation of the LSCR 11 by the output of the means 12 to switch the turn ratio of the converter transformer. |
