PROBLEM TO BE SOLVED: To alternately supply two lines (one being positive, the other negative) of sinusoidal half-wave voltage outputs, which are 180° out of phase with each other, to a primary coil of a step-up transformer and to obtain a high-voltage alternating current output for application to a living body from a secondary coil of the transformer.SOLUTION: Two lines of width-modulated high-frequency pulses, which have been pulse-width modulated by two lines of sinusoidal half-wave signals 180° out of phase with each other, are used to switching-control each of positive and negative direct current voltages to obtain two lines (one being positive, the other negative) of width-modulated amplified pulse outputs, which are 180° out of phase with each other. Each of the two lines of pulse outputs is individually demodulated by means of a demodulation circuit including a parallel circuit in which a choke coil and diode are connected in parallel to obtain two lines (one being positive, the other negative) of demodulated sinusoidal half-wave outputs, which are 180° out of phase with each other. Each of the positive and negative demodulated sinusoidal half-wave outputs is alternately supplied to the primary coil of the step-up transformer, and the resultant high-voltage sinusoidal alternating current generated at the secondary coil of the transformer is converted by a positive voltage breeder circuit into an alternating current for application to the living body, which has a peak value ratio of positive voltage to negative voltage of 1 to 3.COPYRIGHT: (C)2015,JPO&INPIT【課題】 位相が180°異なる正負2系統の正弦半波電圧出力を昇圧トランスの1次コイルに交互に供給し、その2次側から高圧の生体印加交流出力を得る得ること。【解決手段】 位相が互いに180°異なる2系統の正弦半波信号でパルス幅変調した2系統の幅変調済高周波パルスにより、正負の各直流電圧をそれぞれスイッチング制御して位相が互いに180°異なる正負2系統の幅変調済増幅パルス出力を得た後、これら各パルス出力をそれぞれチョークコイルとダイオードとの並列回路を含む復調回路を経て各別に復調し、位相が互いに180°異なる正負2系統の復調済正弦半波出力を得ると共に、これら正負の正弦半波出力を昇圧トランスの1次コイルに交互に供給することで、トランス2次コイルに発生した高圧正弦波交流を正電圧ブリーダ回路により正電圧と負電圧との波高値比率が1対3の生体印加交流となした。【選択図】図1
