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电源技术 无需检测电阻的小型DFN封装电路断路器

  Traditionally, an Electronic Circuit Breaker (ECB) comprisesa MOSFET, a MOSFET controller and a current senseresistor. The LTC®4213 does away with the sense resistorby using the RDS(ON) of the external MOSFET. The resultis a simple, small solution that offers a signifi cant lowinserti ...
https://www.eeworm.com/dl/505/24312.html
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电源技术 降压升压型控制器简化手持式产品的DC/DC转换器设计

  A number of conventional solutions have been available forthe design of a DC/DC converter where the output voltageis within the input voltage range—a common scenarioin Li-Ion battery-powered applications—but none werevery attractive until now. Conventional topologies, suchas S ...
https://www.eeworm.com/dl/505/24313.html
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电源技术 光纤激光器的电流源分析

  A large group of fiber optic lasers are powered by DCcurrent. Laser drive is supplied by a current source withmodulation added further along the signal path. Thecurrent source, although conceptually simple, constitutesan extraordinarily tricky design problem. There are anumber of practica ...
https://www.eeworm.com/dl/505/24381.html
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电源技术 LTC1325电池管理IC的使用

  For a variety of reasons, it is desirable to charge batteriesas rapidly as possible. At the same time, overchargingmust be limited to prolong battery life. Such limitation ofovercharging depends on factors such as the choice ofcharge termination technique and the use of multi-rate/multi-s ...
https://www.eeworm.com/dl/505/24404.html
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单片机编程 基于PIC18F1320微控制器的信号采集系统

  便携式信号采集在机器健康诊断系统中有较高的应用价值。机器健康诊断的信号特点是包括低频信号。本文研究是为了实现简易而且低成本的低频便携式信号采集。以Microchip公司单片机PIC18F1320为核心设计信号采集电路,实现了信号的采集和保存。系统采用串行电可擦除芯片24LC32A保存数据,经过有线通信,信号数据由串行口 ...
https://www.eeworm.com/dl/502/29088.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
下载: 198
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单片机编程 基于MAX7219的LED数码显示驱动电路设计

  现有基于MAX7219芯片的数码管驱动电路只适用于小尺寸LED,为扩展其使用范围,在介绍动态显示芯片MAX7219功能的基础上,提出了一个基于该芯片的8位高亮度8英寸数码管驱动电路。电路保留了MAX7219芯片的功能强大、编程简单等优点,通过74LS273锁存器和ULN2803达林顿驱动器,实现了对任意大尺寸数码管提供较高电压和电流 ...
https://www.eeworm.com/dl/502/29097.html
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单片机编程 基于单片机的数字化B超键盘设计

针对目前使用的RS232接口数字化B超键盘存在PC主机启动时不能设置BIOS,提出一种PS2键盘的设计方法。基于W78E052D单片机,采用8通道串行A/D转换器设计了8个TGC电位器信息采集电路,电位器位置信息以键盘扫描码序列形式发送,正交编码器信号通过XC9536XL转换为单片机可接收的中断信号,软件接收到中断信息后等效处理成按键。 ...
https://www.eeworm.com/dl/502/29118.html
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单片机编程 PIC单片机的RS232通讯程序

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. These temperature readings can be monitored with any terminal program. If ...
https://www.eeworm.com/dl/502/29137.html
下载: 190
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单片机编程 基于S3C2440A的银行评价器的设计

提出了一种以S3C2440A为核心处理器的银行评价器的设计方案,并结合XILINX公司的XL95144XL型CPLD,辅助S3C2440A,实现该银行评价器的各部分功能以及系统信号之间的相互协调。该评价器在系统设计上采用液晶屏显示,代替了以往简单的数码管电路的显示模式,在视觉上给人以全新的享受。同时,评价器增加了新的网络供电方式,只 ...
https://www.eeworm.com/dl/502/29164.html
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