| 摘要 |
PURPOSE:To obtain a stable DC power source by applying a charging current from a new circuit to a smoothing condenser when the current for charging the condenser becomes the prescribed value or lower. CONSTITUTION:A smoothing condenser 5 is charged from a main rectification power source 12. When a charging current reduces, the voltage drop of a resistor 4 decreases, and a comparator 7 turns ON a transistor 11. Then, a transistor 10 turns ON, and the output voltage of an auxiliary rectification power source 13 is applied to the condenser 5 and a load 6. Accordingly, since the condenser 5 is always charged by the constant current or higher, the peak current decreases, and operates as a stable DC power source. |
