To provide an alternating potential therapeutic instrument sine wave alternating current of about 60Hz~200Hz input to the step-up transformer efficiency can be generated. The A phase two systems of that pulse width modulated at 180 ° different half-sine signal each other width modulation already high frequency pulse width modulation already amplified pulse of positive and negative two systems by alternately switching control of each DC voltage of positive and negative After obtaining an output, each of these pulses output by the two systems of the demodulation circuit 4 each having two choke coils L1, L2 and two diodes D1, D2 and capacitor and C, while removing the reverse pulse each demodulates the another alternately with a phase get 180 ° different polarity dual demodulated half-sine output of one another, are fed half-sine outputs of the positive and negative alternately primary coil t1 of the step-up transformer, the secondary coil a high-pressure sine wave AC that occurred t2 peak value ratio of the positive voltage bleeder circuit 5 and the positive voltage and a negative voltage is applied with the biological exchange of 1: 3. .BACKGROUND【課題】昇圧トランスに入力する60Hz~200Hz程度の正弦波交流を効率よく発生させることができる交流電位治療器を提供する。【解決手段】位相が互いに180°異なる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交互にスイッチング制御して正負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2個のチョークコイルL1、L2と2個のダイオードD1、D2とコンデンサCとを有する2系統の復調回路4で、逆向きパルスを除去しつつ各別交互に復調し、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t1に交互に供給し、2次コイルt2に発生した高圧正弦波交流を正電圧ブリーダ回路5により正電圧と負電圧との波高値比率が1対3の生体印加交流とする。【選択図】図1
