手机已成为人们生活中不可缺少的通信工具。目前手机都是由可充电的锂离子电池供电，在野外或无市电的情况下，手机随时可能没电，这给使用者带来许多不便。经研究人体与环境之间总是存在温差，利用温差电技术可实现真正意义上的手机永不断电。温差电技术是绿色环保的发电技术，是一种新的能源替换方式，可将低品位热源的热量有效地转化为电能，同时减少能量消耗，缓解环境污染问题。因此，微型温差电器件将有美好的应用前景，手机体温充电系统对于新能源开发必定具有重要的实际意义。
上传时间： 2013-10-21
上传用户：lchjng
Abstract: A resistive feedback network is often used to set the output voltage of a power supply. A mechanical potentiometer (pot)conveniently solves the problem of adjusting a power supply. For easier automatic calibration, a mechanical pot can be replaced witha digital pot. This application note presents a calibration solution that uses a digital pot, because digipots are smaller, do not movewith age or vibration, and can be recalibrated remotely. This proposed solution reduces the susceptibility of the system to thetolerance of the digital pot's end-to-end resistance, making the solution optimal fordesigners. This application note also explainssome of the equations required to calculate the resistor chain values and to use a digital pot in this way. A spreadsheet withstandard reisistor values is available for easy calculations.
上传时间： 2013-10-31
上传用户：caiguoqing
Abstract: Field-programmable gate arrays (FPGAs) are used in a wide variety of applications and end markets, including digital signalprocessing, medical imaging, and high-performance computing. This application note outlines the issues related to powering FPGAs.It also discusses Maxim's solutions for powering Altera® FPGAs.
上传时间： 2013-11-02
上传用户：zhaoman32
分析了将TSMC（双级矩阵变换器）作为直驱式永磁同步风力发电系的全功率变流器，并且分别对TSMC的整流级的PWM调制和逆变级空间矢量调制进行了推导和计算，简要分析了TSMC的换流方法。然后运用MATLAB对整流级和逆变级调制方法和对直驱式风力发电系统的要求进行仿真验证，仿真结果验证了本文的理论分析和调制方法的正确型，说明了TSMC具有调制方法简单、输出电能质量高等优点，同时也说明TSMC非常适合用于直驱式风力发电系统中，并且为进一步地研究TSMC提供了理论基础。
上传时间： 2014-01-02
上传用户：ouyangtongze
有源功率因数校正可减少用电设备对电网的谐波污染，提高电器设备输入端的功率因数。详细分析了有源功率因数校正APFC（active power factor corrector）原理，采用平均电流控制模式控制原理，设计了基于UC3854BN芯片的一种有源功率因数校正电路方案，着重分析了电路主要参数的选择和设计。实践证明，采用APFC后，大大减小了输入电流的谐波分量，实现了功率因数校正。
上传时间： 2013-10-21
上传用户：immanuel2006
设计了一种以UC3863芯片为核心控制芯片的开关电源，其电路采用半桥结构的LLC谐振电路，带有PFC电路，且整个电路设计有自限流功能。分析了LLC谐振变换器整个电路的工作原理及自限流功能的实现。结合交流220 V输入1KW输出电路，分别对PFC电路和主电路进行仿真，仿真结果验证了该设计的可行性。
上传时间： 2013-10-13
上传用户：sdfsdfs1
Abstract: With its small size and large load (10W) capability, the MAX13256 H-bridge transformer driver is an attractive solution forcharging supercapacitors (supercaps). However, a large capacitance on the output of the circuit can force the driver into fault modeat startup, due to the high initial charge current. This application note presents a solution that allows users to charge a largecapacitance without going into fault.
上传时间： 2013-10-20
上传用户：2728460838
Abstract: This article discusses the requirements and design considerations for automotive applications, including those for enginecontrol, infotainment, and body electronics. It also discusses several Maxim devices that are ideal for automotive applications.
上传时间： 2013-10-27
上传用户：jiangxiansheng
Abstract: This article explores criteria necessary for reliable communication between electric vehicles (EVs) and electric vehicleservice equipment (EVSE). Data will demonstrate that a G3-PLC system has already met the criteria established by the automotiveand utility industries. Multiple international tests prove that a G3-PLC implementation is the optimal low-frequency solution.
上传时间： 2014-12-24
上传用户：逗逗666
阻容降压式电源:将交流市电转换为低压直流的常规方法是采用变压器降压后再整流滤波，当受体积和成本等因素的限制时，最简单实用的方法就是采用电容降压式电源。与变压器降压相比，电容降压（也可理解成电容限流）的电源体积小、经济、可靠、效率高，缺点是不如变压器降压的电源安全。通过电容器把交流电引入负载中，对地有220V电压，人易触电，但若用在不需人体接触的电路内部电路电源中，本缺点也可克服。如冰箱电子温控器或遥控电源的开/关等电源都是用电容器降压而制成的。
上传时间： 2013-11-23
上传用户：wxqman
