一种用于无线鼠标的无接触供电电路  

Contactless Power Supply Circuit for Wireless Mouse

作　　者：周成虎[1] 瓮嘉民[1] 

机构地区：[1]河南工程学院,河南郑州451191

出　　处：《现代电子技术》2011年第12期138-140,共3页Modern Electronics Technique

基　　金：河南省教育厅自然科学研究指导计划项目(2010B510004)

摘　　要：一种用于无线鼠标的无接触供电电路,它包括无接触供电原边电路和副边电路两部分。供电装置采用USB供电,电压为5 V,原边电路通过自激振荡电路产生138 kHz左右的振荡电压,经鼠标垫内置的无接触耦合原边线圈输出能量。无线鼠标内置副边线圈,用感应耦合方式获取电能,并由稳压芯片稳压得到3.1 V的直流电压。通过数学分析建立系统模型,得到无接触电能传输设计方案。采用了升压整流电路,克服了低电压条件下无接触耦合副边线圈电压低的缺陷,实验证明电路可行。A non-contact power supply circuit for wireless mouse is composed of a non-contact power supply original edge circuit and a vice edge circuit.Power supply device uses USB to provide 5V voltage.The original edge circuit produces about 138 kHz oscillation voltage through self-excited oscillation circuit,and outputs energy through the non-contact coupling original edge coil which is built in mouse mat.The vice edge coils are built in the wireless mouse to get electric power in induction mode and acquire 3.1 V DC voltage by AVR microchip.A system model was established by mathematical analysis,and then the design scheme for non-contact electric power transmission was worked out.Adopted The boost rectifier circuit was adopted in the scheme to overcome the defects caused by low voltage of the contactless coupling vice edge coil under the condition of low voltage.Experiment proves that the circuit is feasible.

关 键 词：无线鼠标 无接触供电 稳压芯片 PSPICE仿真 

分 类 号：TN919-34[电子电信—通信与信息系统] TM46[电子电信—信息与通信工程]