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PCB 布线原则连线精简原则连线要精简，尽可能短，尽量少拐弯，力求线条简单明了，特别是在高频回路中，当然为了达到阻抗匹配而需要进行特殊延长的线就例外了，例如蛇行走线等。安全载流原则铜线的宽度应以自己所能承载的电流为基础进行设计，铜线的载流能力取决于以下因素：线宽、线厚（铜铂厚度）、允许温升等，下表给出了 ...

高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture t ...

  Easy-to-use and compact point-of-load power suppliesare necessary in systems with widely distributed, highcurrent, low voltage loads. The LTC®3415 provides acompact, simple and versatile solution. It includes a pairof integrated complementary power MOSFETs (32mΩtop and 25m&Omega ...

  As environmental concerns over traditional lighting increaseand the price of LEDs decreases, high power LEDsare fast becoming a popular lighting solution for offl ineapplications. In order to meet the requirements of offl inelighting—such as high power factor, high effi ciency, isol ...

内容提要： MCS-96单片机的应用系统设计基础            硬件电路设计,语言的设计基础,程序分析            PL/M-96可执行语句和程序等等.... 第一章 概述   1.1 单片机应用系统的结构   1.2 MCS-96单片 ...

在航电系统维护过程中，为解决定位故障的效率和降低维修成本等问题，提出了基于ICD（Interface Control Document，接口控制文件）的1553B总线的信息监控系统模型。该系统运用数据采集卡对总线中传输的信号有无失真、偏差等电气特性进行检测，并使用1553B通讯卡通过测控软件LabWindows/CVI编程与ICD数据库的动态链接，实现总 ...

阐述了一个由上位PC机和AT89C52下位单片机组成的主从分布式温度巡回检测系统。主从机采用RS-485 串行通讯标准进行通信，可在下位单片机实现基本的温度数据巡回检测基础上，由上位PC机实现综合处理功能或扩展为远程操作。整个系统具有巡检速度快，扩展性好的特点。 Abstract:  In this paper,a top PC and AT89C52 u ...

量测/测试所面临之问题 此测试验证上，要使用NI公司之LAB VIEW及DAQ CARD来取代AUDIO PRECISION及其所附软体ATS。首先需克服硬体解析度上的差异，再来是FFT（FAST FOURIER TRANSFORM,快速传立业转换）演算未予的撰写，这将会影响MULTI-TONE讯号上PEAK值的侦测。另外，以RS-232为I/O介面，并呼叫客户所提供之DLL档来与DUT内 ...

The SN65LBC170 and SN75LBC170 aremonolithic integrated circuits designed forbidirectional data communication on multipointbus-transmission lines. Potential applicationsinclude serial or parallel data transmission, cabledperipheral buses with twin axial, ribbon, ortwisted-pair cabling. These devices ...

The PCA9674/74A provide general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus (Fm+) family.