GPS方案模块框图，如有兴趣可以参考框图设计GPS,很有参考价值...

智能电池充电电池管理芯片CS0301.内容非常全。可以给一般理电池和非理电池。-Intelligent battery charging battery management chip CS0301. Very wide. Can give a general rationale for the battery cell and non-justification.

WHY to drive SMT160 whith ICP AND INT

在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入输出点数并不多, 通常在60点以下,因此, 为了降低数控机床成本, 在基于工业PC机的数控系统中, 可以采用开关量I/O板加外接继电器,配合主机的软件对机床开关进行控制。但如果PC机采用单任务操作系统(如DOS) , 数控系统的所有任务运行都置于一个总体的消息循环中, 软件的模块化和可维护性较差, 系统故障的风险相对集中, 而且不能充分利用PC机系统资源。而采用非实时多任务操作系统(如Windows) 时, Win32 API的设计没有考虑到实时环境的开发用途, 其系统调用的效率不高,不能满足数控系统PLC控制的实时性要求。 　　为此, 本文提出一种基于RT - Linux操作系统的嵌入式PLC, 利用RT - Linux的开放性、模块化和可扩展性的系统结构特性和多线程/多任务的系统环境,在保证实时性的同时, 使故障风险相对分散。 -use linux to design plc

QPSK调制器的FPGA实现，提出了一种基于FPGA实现QPSK的方法-QPSK Modulator FPGA, presents a FPGA-based QPSK method of achieving

摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用 OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多 径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和 基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波 调制方式―i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果. -Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of

无线网络站点的设计，根据无线网络的传输规律，讨论了多种站点设计方案，最后找到最经济，最可靠的站点设计方法。-Wireless network site design, wireless network in accordance with the laws of the transmission to discuss a wide range of site design options, and finally to find the most economical and most reliable methods of site design.

TEST PWM duty with PIC16F877A using CCP1 with xtal = 20 MHz, compiler: CCS C 4.068

Pretvarac napona sa 12 na 220 volti 100w

FPGA的设计流程以及DSP设计,FPGA培训核心讲义，对开发FPGA的高级人员和初级人员都非常有用-FPGA design

介绍一种采用半桥电路的开关电源，其输入电压为交流220V±20％，输出电压为直流4～16V，最大电流40A，工作频率50kHz。重点介绍了该电源的设计思想，工作原理及特点。-Introduction of a half-bridge circuit using the switching power supply, the input voltage for AC 220V ± 20, output voltage of DC 4 ~ 16V, maximum current 40A, operating frequency of 50kHz. Focuses on the design of the power of thought, working principle and characteristics.