PROBLEM TO BE SOLVED: To provide an alternating current (AC) potential therapy device in which a positive and negative peak value ratio of a biological applied AC is secured in a predetermined ratio, for example, 1 to 3, even if a place of use and the usage pattern of an insulating coating conductive mat for applying an AC high voltage to a living body are changed.SOLUTION: One end of a protection combined voltage dividing circuit B1 with a resistance R2 connected in parallel is connected to a series circuit with a diode D1 and a resistance R1 directed to this high voltage end, in the high voltage end P1 of a secondary coil L2 in an AC step-up transformer T. Also, a positive voltage dividing circuit B2 with a resistance R3 connected in series is connected to a diode D2 directed to the ground end between the other end of this voltage dividing circuit B1 and a secondary coil ground end P2. A high voltage AC obtained from a voltage dividing output end b between each voltage dividing circuit B1 and B2 is supplied to the conductive mat m as the biological applied AC. Thereby, even if the biological applied AC voltage is changed with the fluctuation of the usage pattern of the conductive mat m, the positive and negative peak value ratio of this AC can be secured in a predetermined ratio.COPYRIGHT: (C)2016,JPO&INPIT【課題】 生体に交流高電圧を印加する絶縁被覆導電マットの使用場所や使用形態が変化しても、生体印加交流の正負波高値比率を所定比率、例えば1対3に確保すること。【解決手段】 交流昇圧トランスTにおける2次コイルL2の高圧端P1に、この高圧端に向けたダイオードD1と抵抗R1との直列回路に対し、抵抗R2を並列接続した保護兼用分圧回路B1の1端を接続すると共に、この分圧回路B1の他端と2次コイル接地端P2との間には、接地端に向けたダイオードD2に抵抗R3を直列接続した正電圧分圧回路B2を接続し、前記各分圧回路B1・B2間の分圧出力端bから得た高圧交流を前記導電マットmに生体印加交流として給電することで、導電マットmの使用形態の変動に伴う生体印加交流電圧が変化しても、この交流の正負波高値比率を所定比率に確保できた。【選択図】図1
