PROBLEM TO BE SOLVED: To provide a power supply system for an electronic fence, which secures safety to the human body, is operated at a low power consumption, and sufficiently has electric shock effects on animals.SOLUTION: When an animal, or the like, is contacted with the electric fence 20 and an electric current at or above a prescribed value flows from a capacitor C12, the electric current is detected by an electric current detection circuit 13 and a control unit 15 makes a high-voltage generating circuit 11 charge the capacitor C12 on the base of the detection. Consequently, the capacitor C12 is charged in a short period, when an animal, or the like, is in contact with the electric fence 20 and the capacitor C12 is charged in such a long period as to compensate natural electric discharge in cases except that. For this reason, a useless power consumption in standby is suppressed. Since the capacitor C12 is charged in a short period when an animal, or the like, is in contact with the electric fence 20, a strong electric shock is repeatedly applied to the animal.COPYRIGHT: (C)2011,JPO&INPIT【課題】人体に対する安全性を確保した上で、低消費電力で動作し且つ動物に対する電撃効果が十分にある電気柵用電源装置を提供する。【解決手段】動物等が電気柵20に接触し、コンデンサC12から所定の値以上の電流が流れると、その電流が電流検出回路13で検出され、それに基づいて制御部15が高電圧発生回路11にコンデンサC12の充電をさせる。これにより、動物等が電気柵20に接触しているときには短い周期でコンデンサC12を充電するが、それ以外のときには自然放電を補う程度の長い周期でコンデンサC12を充電することができる。従って、待機時の無駄な電力消費を抑えることができる。また、上記のとおり動物等が電気柵20に接触しているときには短い周期でコンデンサC12を充電するため、動物に繰り返し強い電撃を与えることができる。【選択図】図1
