| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem on a load driving circuit and a sensor circuit built in a hot water supply device that the current is always supplied to the built-in IC even in a period unnecessary to drive a load. <P>SOLUTION: This hot water supply device comprises, at least, a first control unit constituted of a power source means, a control means and a current limiting means, a second control unit constituted of a functional means to be operated by a supply from the power source means, and a connector means for connecting the first control unit and the second control unit to each other. The current limiting means controls the power supply from the power source means of the first control unit to the second control unit through the connector means to supply the current to the second control unit during only the necessary period. <P>COPYRIGHT: (C)2003,JPO |
