实用的无线供电模块 公布原理图

<wbr><wbr>参数：<wbr><wbr>条状、长6cm左右；</wbr></wbr></wbr></wbr>

<wbr><wbr>效率：20%-80% 视距离而定<br style="word-wrap:break-word; line-height:normal"><wbr><wbr>功率：0.2W-8W<wbr><wbr>对应距离：6cm-2cm<br style="word-wrap:break-word; line-height:normal"><wbr><wbr>工作频率：低于100kHz<br style="word-wrap:break-word; line-height:normal"><wbr><wbr>波形：纯正弦波，无干扰，小到可用于<span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">模拟</span>隔离变送器<br style="word-wrap:break-word; line-height:normal"><wbr><wbr>用途：隔离变送器，尤其<span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">推荐</span>用于通往户外的采集装置等的<span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">数字</span><span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">通信</span>器<br style="word-wrap:break-word; line-height:normal"><br style="word-wrap:break-word; line-height:normal"> 呵呵<wbr><span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">下载</span><span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">资料</span>后敬请回复您的<span style="word-wrap:break-word; word-break:normal; line-height:normal; border-bottom-width:1px; border-bottom-style:solid; border-bottom-color:rgb(255,0,0); white-space:nowrap">应用</span>场合或领域。谢谢！</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

如果将图中的磁棒线圈更换成为空心线圈，可很好的解决旋转LED供电的问题。
但是空心线圈Q值地，在频率低于100kHz时建议使用多股线

图中6cm的距离可以传输5V/40mA的电力，此时发送端为12V/0.1A左右，
<wbr><wbr><wbr><wbr>3cm的距离可以传输5V/200mA的电力，此时发送端为12V/0.15A左右，<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>2cm的距离可以传输5V/300mA的电力，此时发送端为12V/0.2A左右，<br style="word-wrap:break-word; line-height:normal"><br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>若将发送功率提升到5W，则以上大小的线圈可以传输5V/5mA到40cm的距离。若频率提升到200kHz，则发送功率可以降低到2W。<br style="word-wrap:break-word; line-height:normal"><br style="word-wrap:break-word; line-height:normal"> 若要提高效率：<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>1、可以使用多股线绕制线圈<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>2、用更低损耗的电容<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>3、提高收发线圈结构的直径<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>4、再不考虑对敏感设备干扰情况下，如纯数字电路中，无线电源的频率提高到200kHz</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

如果物理理论没有突破，效率始终与频率和收发线圈尺寸有关

比如我的经验是：在频率100kHz以下时，传输距离接近与收发线圈尺寸时，最大效率为：20%
<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>若频率提升到200kHz 以上，传输距离接近与收发线圈尺寸时，最大效率为：可能会达到40%；<br style="word-wrap:break-word; line-height:normal"><br style="word-wrap:break-word; line-height:normal"> 所以国外麻省的试验你看到了他们要传60W的功率，用了6Mhz的频率，0.6m直径的粗铜丝线圈，距离才3m，我认为其基本理论并没有突破，仍旧停留在磁场谐振<br style="word-wrap:break-word; line-height:normal"><wbr><wbr><wbr><wbr>频率这么高，我认为对人体，或对其他电气设备是有干扰的.</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>原理图<br><br></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>