| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hold circuit having noise resistance and a shortened stabilizing time until a peak value or a bottom value after power supply input, and a radio controlled clock for elongating a battery life by using the hold circuit. <P>SOLUTION: This hold circuit 1 includes signal input operation amplifiers 10, 30 having two input terminals wherein an input signal from the outside is inputted into one input terminal and the potential of a hold node is returned to the other input terminal, holding rectifying devices D1, D4 connected between output terminals of the signal input operation amplifiers and the hold node, capacitative elements C1, C3 connected to the hold node, and a first hold node potential adjusting means 12 for setting the hold node potential at a prescribed reference potential only when the hold node potential does not reach the prescribed reference potential. <P>COPYRIGHT: (C)2004,JPO</p> |
