| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric fence through which a man can pass at any optional position without receiving an electric shock, to provide a control method for the electric fence, to provide an electric power unit of the electric fence, to provide a voltage generator of the electric fence, and to provide a control circuit of the electric fence. <P>SOLUTION: When a power switch 55 is 'ON' and a detective electric signal voltage generator 23 is not connected with fence lines 3, only a first voltage from a voltage generator 56 is supplied to the fence lines 3. The generated first voltage is applied to fence lines 3 [naked wires (3A-3D)] thereby when a man, a wild animal or the like contacts the naked wires (3A-3D), it receives a shock. A hook-shaped positive terminal 23A of the detective electric signal voltage generator 23 is hooked on a necked wire 3A, a rod-shaped negative terminal 23B is inserted to the ground and a second voltage is applied to the necked wire 3A. Thus, a coil 53 of a relay is excited and a B contact point 54 of the relay is opened so that the power supply voltage is not applied to the voltage generator 56 and the generation of the first voltage is stopped. <P>COPYRIGHT: (C)2012,JPO&INPIT |
