| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply unit for appropriately supplying power to a load circuit, while aiming at reducing power consumption. <P>SOLUTION: The power supply unit 10 includes a current detecting resistor 15 for inputting an input voltage from a power supply 12 in the primary side of a power conversion transformer 11; converting the inputted voltage into a predetermined output voltage and outputting the converted voltage to a load circuit 13 connected to a secondary side; and detecting a current equivalent to a current flowing through the load circuit 13; and a power conversion circuit 17 for regenerating the current flowing through the current detection resistor 15 to the primary side, while controlling the regenerative current so the value of a set current ISET flowing through the current detection resistor 15 becomes a current value which is equivalent to the current flowing through the load circuit 13. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
