为了有效地提升铅酸蓄电池的使用寿命，同时实现对充电过程的监控，设计出一种用单片机控制的36 V铅酸蓄电池充电电源。本电路采用反激式拓扑，连续电流工作模式，电源管理IC设计在电源的副边，由ELAN公司的EM78P258N单片机模拟，是用可编程器件模拟电源管理IC，实现智能电源低成本化的一次成功尝试，通过对单片机的软件设计实现了充电电源的状态显示、充电时间控制、报警、过温保护、过压保护、过流保护等功能。本充电器真正的实现了铅酸蓄电池的三段式充电过程，其最高输出功率可达90 W，效率约85%，成本不到20元，具有很高的市场竞争力。 Abstract: In order to extend the life of lead-acid battery efficiently and supervise the charging process meanwhile， a 36V lead-acid battery charge powe supply controlled by microcontroller is designed. The charger is flyback switching power supply and works in CCM mode. A EM78P258N microcontroller made by ELAN microelectronics corporation is used as power management IC which is designed at the secondary circuit. The project is a successful attempt to low-cost intelligent power used microcontroller simulating power management IC. The charger also has the functions of the status reveal， charge time control， alarming， thermal protect， current limit and overvoltage protect by the software design. The circuit actually implements the three-step charge process， whose power is up to 90W and whose efficiency can get 85%. The net cost of this charger is less than 20 RMB， so that the charger is of powerful market competitiveness.
上传时间： 2013-11-16
上传用户：cepsypeng
HT66F40使用SIM SPI Mode的用法 HT66F40 内建有串行接口功能，其中包括了SPI 和I2C 这两种总线模式，本文以HT66F40为母体，介绍使用SPI 进行数据传输的方法和注意事项。
上传时间： 2013-10-12
上传用户：tuilp1a
The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due totheir high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink isrequired. Optimized for use with standard series of inductors available from several different manufacturers, theTL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimaladdition of only four to six external components for operation.
标签： STEP-DOWN SWITCHING SIMPLE 1A
上传时间： 2013-11-20
上传用户：jelenecheung
为filename 所指定的文件名按mode 模式创建一个FILE结构数据区,并将该数据区的首地址赋值给FILE类型的指针变量fp.
上传时间： 2013-12-09
上传用户：时代电子小智
一个能够在 Console Mode 下使用的 Shell 类 (1.00 版，附源码 )，
上传时间： 2014-08-14
上传用户：litianchu
KmdTut是一份以Win32汇编语言来开发Kernel mode驱动程序的教程
上传时间： 2013-12-26
上传用户：cjf0304
Works a client and a server using UDP in asynchronous operation mode to implement the simple daytime protocol, as described in RFC 867
标签： asynchronous implement operation daytime
上传时间： 2015-02-15
上传用户：秦莞尔w
usb user mode lib
上传时间： 2013-12-25
上传用户：weiwolkt
5509 MMC in Native Mode
上传时间： 2015-03-18
上传用户：jennyzai
繁简转换控件属性:Mode:(GBtoBig,BigtoGb)GbtoBig:进行简繁转换；BigtoGb:进行繁简转换；方法:SetString(ss:string)返回字符串ss的转换结果(返回繁,简体视mode设定而确定).
标签： BigtoGb SetString GBtoBig GbtoBig
上传时间： 2014-08-07
上传用户：qq21508895
