| 摘要 |
PROBLEM TO BE SOLVED: To provide a power feeder device which can surely feed a constant current to the feeder regardless of the fluctuation in the load even when the resistance of a feeding device can not be neglected. SOLUTION: The power feeder device 11 is constituted of a power source 2 which can freely change the output voltage, an impedance converter part 6 composed of a passive element, a current detection means 7 which detects a current Iout flowing in the feeder and a control means 8 which controls the voltage of the power source to generate a target current by the detected current. The power source 2 is an inverter power source and changes the output voltage Vinv by changing the output pulse widthτ.
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