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技术资料 PW4055_2.0.pdf规格书下载

The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specif ...
https://www.eeworm.com/dl/829498.html
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技术资料 直流电动机测速装置

本系统采用电动机电枢供电回路串接采样电阻的方式来实现对小型直流有刷电动机的转速测量。该系统主要由二阶低通滤波电路,小信号放大电路、单片机测量显示电路、开关稳压电源电路等组成。同时自制电机测速装置,用高频磁环作为载体,用线圈绕制磁环,利用电磁感应原理检测电机运行时的漏磁,将变化的磁场信号转化为磁环上的感应 ...
https://www.eeworm.com/dl/831615.html
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技术资料 基于单片机的智能风扇的设计与实现

为了解决传统风扇无法进行人体感知从而导致损耗大量的电力资源且存在安全隐患,设计开发了一个智能风扇系统。该系统以单片机为核心,采用DS18B20温度传感器采集数据,将周围环境温度在LED数码管上实时显示,根据实时温度与系统设置的阈值,同时人体红外模块监测周围环境是否有人,来决定风扇是否开启,当没有人在房间时,风扇自动关 ...
https://www.eeworm.com/dl/897392.html
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模拟电子 LTC1099半闪速8位AD转换数字光电二极管阵列

This application note describes a Linear Technology "Half-Flash" A/D converter, the LTC1099, being connected to a 256 element line scan photodiode array. This technology adapts itself to handheld (i.e., low power) bar code readers, as well as high resolution automated machine inspection applicatio ...
https://www.eeworm.com/dl/571/21354.html
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电源技术 分比功率架构和V•I晶片灵活、优越的功率系统方案

当今电子系统如高端处理器及记忆体,对电源的需求是趋向更低电压、更高电流的应用。同时、对负载的反应速度也要提高。因此功率系统工程师要面对的挑战,是要设计出符合系统要求的细小、价廉但高效率的电源系统。而这些要求都不是传统功率架构能够完全满足的。Vicor提出的分比功率架构(Factorized Power Architecture FPA)以 ...
https://www.eeworm.com/dl/505/24861.html
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单片机编程 Microchip PIC系列单片机RS232通讯应用

Digitemp Junior – An RS-232 Port-Powered Digital Thermometer Digitemp Jr. is a device that is designed to measure and report ambient temperature. When connected to an RS-232 port on any PC, it will periodically measure and report in ASCII form the ambient temperature in degrees Celsius ...
https://www.eeworm.com/dl/502/29089.html
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单片机编程 基于P89LPC922单片机的汽车后车窗控制器设计

介绍一种应用于长城赛弗SUV汽车后门车窗多功能控制器,能实现对电动玻璃车窗、车窗雨刮器、喷水器以及电加热除霜器等控制。介绍了基于NXP P89LPC922单片机多功能汽车后车窗控制器的控制功能、硬件电路原理和软件设计方法。 Abstract:  This paper presents a multipurpose automotive rear windows controller for ...
https://www.eeworm.com/dl/502/29325.html
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测试测量 低噪声电压基准的噪声测量

  Frequently, voltage reference stability and noise defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increa ...
https://www.eeworm.com/dl/544/41895.html
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Internet/网络编程 WAP网站不同于普通的WEB页面

WAP网站不同于普通的WEB页面,他是采用WML描述页面元素。WML是一种基于XML的标记语言,文档类型定义是xml文件类型的。所以,让WEB程序员编写WML标记语言的页面,是一种吃力的过程,需要系统的学习XML知识和相关的WML标签。 为了减少WAP网站的建设,企业可以使用Power Diamond通用WAP网站生成系统自动生成静态WAP网站,本系 ...
https://www.eeworm.com/dl/620/138995.html
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书籍源码 zemax源码: This DLL models an anamorphic aspheric surface. This surface is essentially an even asp

zemax源码: This DLL models an anamorphic aspheric surface. This surface is essentially an even aspheric surface with different terms for the x and y directions. The sag is given by: Z = ((CX*x*x)+(CY*y*y)) / (1 + sqrt(1-((1+KX)*CX*CX*x*x)-((1+KY)*CY*CY*y*y))) + AR*( (1 - AP)*x*x + (1 + AP)*y*y ...
https://www.eeworm.com/dl/532/178858.html
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