Magnetic coupling circuit-driving system

申请公布号：

EP0704814(A2)

申请号：

EP19950114584

申请日期：

1995.09.15

申请公布日期：

1996.04.03

申请人：

KABUSHIKI KAISHA TOSHIBA

发明人：

GOTO, YUICHI

分类号：

H04B5/00;G06K19/07;G06K7/08;G06K17/00;H04L27/20;(IPC1-7):G06K7/08

主分类号：

H04B5/00

摘要：

<p>To create a critical coupling state of coils (4, 5) provided in the first and second series resonance circuits (20, 21), the output resistances of circuits for driving the resonance circuits are adjusted, or the distance between the coils is adjusted. A sine wave AC signal of a frequency identical to the resonance frequency of the resonance circuits is applied to one of the resonance circuits in accordance with transmission data. When one of the coils has been excited, the other coil electromagnetically coupled with the excited coil is also excited, thereby generating magnetic fields of the same intensity and different phases. The coils which constitute a magnetic coupling circuit can be driven by a power lower than that required in the conventional case, thereby transmitting carrier waves of a necessary intensity. &lt;IMAGE&gt;</p>