| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a circuit system in which efficiency can be improved by reducing a difference from an output voltage, even if the input voltage of a series regulator cannot be changed. Ž<P>SOLUTION: In this circuit system, a plurality of circuit blocks 2A to 2C are connected in series between an output terminal of a series power supply 1 and the ground, and each circuit block 2 has a power consumption control unit 4 to control own power consumption. A sensor unit 5 monitors a power source terminal potential (X) and a negative power source terminal potential (Y) for the circuit blocks 2B, 2C which are not arranged on uppermost stage. A control unit 6 gives power consumption control commands A to C to the power consumption control units 4A to 4C of the circuit block 2A to 2C, according to monitored results. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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