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开发板原理图 自己可以设计开发板为什么一定要买呢(Development board schematic can design their own development board why they must buy it)

微机课程设计报告(Computer curriculum design report)

在电网电压频率波动或者三相不平衡的情况下,硬件锁相很难准确检测到基波正序的相位。在结合PWM整流器空间矢量解耦控制算法的基础上,将软件锁相环技术应用在PWM整流器控制系统中,并用仿真和实验验证了该方案的可行性。实验结果表明,该方案解决了电网电压频率波动及三相不平衡时的相位同步等问题,并在工程上具有一定参考价值。(Frequency or voltage fluctuations in three-phase unbalanced case, the hardware lock is difficult to accurately detect the fundamental positive sequence phase. In the space vector PWM rectifier with decoupling control algorithm based on the software used in the PWM rectifier PLL control system, and use simulation and experimental verification of the feasibility. Experimental results show that the solutions to address the voltage and frequency fluctuations of the phase unbalanced three-phase synchronization issues, and the project has a certain reference value.)

水下被动定位论文，用于对水下节点进行定位，能够实现水下节点的定位功能(the paper of underwater wireless sensor network localization)

Lcd nt35521 datasheet.

ASP_NETAJAX在Web开发中的应用

该文档讲述了一种交错并联型PFC电路的设计，设计大功率PFC电路时可以参考一下(This document describes the design of a interleaved parallel PFC circuit, and can be referenced when designing a high-power PFC circuit.)

汽车倒车雷达的一个综合性的设计方案。可以适当解决您当前的困难。(A car reversing radar integrated design. You can adequately address the current difficulties.)

嵌入式电网故障自动录波系统的设计论文，全面介绍了前置机的数据采集板设计方案，包括开关量和模拟量的采集(Embedded Network Fault automatic recording system design papers, FRONT-END comprehensive presentation of the data acquisition board design programs, including switching and analog volume collection)

银行自动取款机ATM的课程设计报告，用C#.net编写(Bank automated teller machine ATM curriculum design report, using C#. Net written)