The present invention provides an amplifying
repeater, which is constructed in such a manner that a
ferrite core is inserted into a coil with a pre-determined number of winds to increase an induced
electromotive force caused by an increase in
flux linkage using a time-varying
magnetic field of electromagnetic
waves at a position distant from various electromagnetic wave generating sources by a predetermined distance and the
induction coil and a variable condenser for inducing
resonance are connected to each other to increase current while reducing a resistant component existing in the
induction coil to intensify and amplify the
magnetic field of electromagnetic
waves. Furthermore, the present invention provides a
wireless power conversion charging device using the
magnetic field of electromagnetic
waves, which is located between an electromagnetic wave generating source
transmitter and a receiving coil or attached to the
transmitter and receiving coil. The
wireless power conversion charging device includes a rectifying
diode for rectifying an
electromotive force induced in a construction in which a
resonance and
impedance matching variable condenser is connected to a coil in series or in parallel in order to transmit maximum induced power to a charging battery that is a load using electromagnetic waves amplified by the amplifying
repeater, and a
smoothing condenser for
smoothing the rectified
voltage. Accordingly, charging power required for various small power electronic devices can be provided and power can be supplied to various loads.