Unit current transformer device and magnetic induction power supplying device for linearly controlling output power by using the same

An apparatus comprising:

• a plurality of unit current transformer devices for linearly adjusting output power, each comprising:
• a current transformer connected to a line indirectly and detachably, and configured to induce current by using a magnetic field in the line;
• and
• a converting unit converting an output of the current transformer to DC power,
• wherein each converting unit includes:
• a primary voltage rectifying unit converting the induced current by the current transformer to a DC voltage;
• a current converting unit converting the converted DC voltage by the primary voltage rectifying unit to a current;
• and
• a secondary current rectifying unit converting the converted current by the current converting unit to a DC current;
• wherein the current has a resonant frequency double or greater than that of the current flowing through the line;
• wherein the apparatus further comprises;
• a summing unit summing each of the DC currents output from each of the plurality of unit current transformer devices and outputting the summed DC currents;
• wherein an output by the summing unit is linearly proportional to the number of the plurality of unit current transformer devices.