一种使用H桥和多谐振荡器的无线充电器设计

针对有线充电繁琐的人工操作和线材杂乱的弊端,设计一种无线充电器方案.此设计使用H桥逆变器和基于NE555的多谐振荡器,利用开关电源模块对交流电进行降压和整流,再将直流电逆变为交流电并通过线圈将电能发射,接收端将接收到的交流电能整流滤波后稳压供应给用电器.与大多数一对一无线充电方案相比,本设计可以在一较大范围内对多个移动设备同时供电.该套系统经测试可稳定工作,并可同时给手机、键盘和鼠标三件无线设备供电,达到设计要求.

A Design of Wireless Charger based on H-Bridge and Multivibrator

To avoid tedious manual charging cable and wire clutter drawbacks,this paper develops a scheme for designing a wireless charger by using an H-bridge inverter and a multivibrator based on NE555.Then switch power module is applied to reduce the voltage and rectify the alternating current.Next,direct current is inverted to alternating current,and the power is transmitted via coils.The alternating power,which is filtered and rectified,is provided for electrical appliances. Compared with the mostly used one-to-one wireless chargers,this design is able to simultaneously power multiple mobile devices in a large area.The tests suggest that this system can work stably and charge mobile phone,keyboard and mouse at the same time.The design purpose is achieved.