| 摘要 |
PURPOSE:To double a power source so that output current of the power source can be shunted to other circuits by setting a flip-flop so as to drive a relay in the case signal indicating supply fault is inputted from another circuit when the load current detected by means of a measuring is smaller than a threshold. CONSTITUTION:A current is supplied to a load connected to output terminals 112 and 13 from a power source section composed of a current rectifying section 100, a switching section 101, and an output section 102 in accordance with the instruction from a control section 103. Upon receiving a command from the section 103, a measuring section 104 detects a load current and a comparator 105 compares the load current with the threshold of a threshold setting section 106. When the lord current is smaller then the threshold, the comparator 105 discriminates that the load is light and outputs a level L. In the case the level H indicating the power supply fault of another circuit is inputted when the load current is smaller then the threshold, an FF 107 is set and drives a relay 108 by outputting a level H. As a result, a switch (r) is turned on and the current is shunted to the another circuit through terminals 114 and 115. Therefore, a power source can be easily doubled with a less number of power units. |
