Power supply apparatus and magnetic field generation system

Abstract

A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.

1 . A cancer treatment apparatus comprising:
 a power supply configured to apply an alternating current; and   a magnetic field generation apparatus configured to generate an alternating magnetic field in response to the alternating current that is applied by the power supply to the magnetic field generation apparatus and apply the alternating magnetic field to cancer cells, wherein   at least one of the alternating current or the alternating magnetic field has frequency components having a plurality of frequency spectrums different from each other.   
     
     
         2 . The cancer treatment apparatus according to  claim 1 , wherein the cancer treatment apparatus further comprises a controller configured to control the power supply to generate a waveform pattern of the alternating current,
 wherein the controller is further configured to change the waveform pattern of the alternating current that is applied to the magnetic field generation apparatus.   
     
     
         3 . The cancer treatment apparatus according to  claim 2 , wherein the waveform pattern of the alternating current is generated by data of the plurality of the frequency spectrums. 
     
     
         4 . The cancer treatment apparatus according to  claim 2 , wherein the waveform pattern of the alternating current is generated by connecting data of the plurality of the frequency spectrums. 
     
     
         5 . The cancer treatment apparatus according to  claim 2 , wherein the waveform pattern of the alternating current is generated by superimposing data of the plurality of the frequency spectrums. 
     
     
         6 . The cancer treatment apparatus according to  claim 1 , wherein data of the plurality of the frequency spectrums are continuous. 
     
     
         7 . The cancer treatment apparatus according to  claim 1 , wherein data of the waveform pattern of the alternating current include frequency spectrums ranging from 100 [kHz] to 400 [kHz]. 
     
     
         8 . The cancer treatment apparatus according to  claim 2 , wherein data of the frequency spectrums have different amplitudes. 
     
     
         9 . The cancer treatment apparatus according to  claim 2 , wherein data of the frequency spectrums have different time lengths. 
     
     
         10 . The cancer treatment apparatus according to  claim 1 , wherein the magnetic field generation apparatus includes:
 a plurality of magnetic field generation devices,   wherein the plurality of the magnetic field generation devices are arranged so as to increase a strength of the alternating magnetic field.   
     
     
         11 . The cancer treatment apparatus according to  claim 10 , wherein the plurality of the magnetic field generation devices are coils. 
     
     
         12 . A cancer treatment method comprising:
 applying an alternating current by a power supply to a magnetic field generation apparatus;   generating an alternating magnetic field in response to the alternating current, and   applying the alternating magnetic field to cancer cells,   wherein at least one of the alternating current or the alternating magnetic field has frequency components having a plurality of frequency spectrums different from each other.