| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance the reuse efficiency of an electric charge which is temporarily accumulated in a power regeneration circuit. <P>SOLUTION: The charging timing of an emission electric charge from a first circuit (a circuit for emitting an electric charge) 202 via a first switch circuit 203 to a secondary battery 201, and the discharging timing of a charging electric charge from the secondary battery 201 to a second circuit (a circuit needing an electric charge) 204 via a second switch circuit 205 are controlled by a drive circuit 206 by arranging the secondary battery 201 in place of an electric charge accumulation capacitor. The secondary battery 201 can send all the charging electric charges to the second circuit 204 different from the electric charge accumulation capacitor. For example, when an electromotive force of the secondary battery 201 is set to be a half of each power supply voltage Vcc of the first circuit 202 and the second circuit 204, and when a half of an electric charge of the first circuit 202 is charged to the secondary battery 201, the half of the electric charge is sent to the secondary circuit 204, and thus the reuse efficiency of the electric charge is enhanced. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
