| 摘要 |
<p>PURPOSE:To enable coupling between devices without electric contact at all by providing an information transmitting unit and an information receiving unit, transmitting and receiving information without contact in first and second devices respectively and providing an energy supplying unit in the first device and a power conversion unit which receives energy without contact and converts it into electric power in the second device. CONSTITUTION:An energy supplying unit 4 in a device 100 comprises an AC power source 41 and a core 43 constituting a coil 42 and a core of the coil 42 connected therewith. Electromagnetic energy is emitted from an end portion of the core 43 by an AC current flowing through the coil 42. On the other hand, a power conversion unit 7 in a device 200 is provided with a core 71 opposite to the core 43 and a coil 72 using the core 71 as a core, and electromagnetic energy from the energy supplying unit 4 is converted into AC power and furthermore, it is rectified and smoothed, thereby obtaining a DC voltage Vcc2. An information transmitting unit 5 in the device 100 is composed of a resistor 51 and a photo-diode 52, and on the other hand, an information receiving unit 8 in the device 200 opposite to the device 100 is composed of a photo-transistor 81 and a resistor 82.</p> |
