| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a capacitor voltage division circuit capable of minimizing current consumption of a resistor by supplying a current to the resistor only after a voltage being applied to the capacitor exceeds a specified level and capable of shortening the charging time by blocking current supply to the resistor at the time of charging the capacitor. <P>SOLUTION: In the voltage division circuit of capacitors 1a and 1b connected in series, a series connection of resistors 2a and 2b and transistors 3a and 3b is connected in parallel with respective capacitors 1a and 1b, and the transistors 3a and 3b are turned on when a voltage being applied to the capacitors 1a and 1b exceeds a specified level by a control means. The control means comprises Zener diodes 4a and 4b having a Zener voltage not higher than the rated voltage of the capacitor. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
