step-down-chopper-circuit

说明：  stm32版本的can通信的接收与发送例程，扩展帧方式(Receiving and sending routines of STM32 version can communication, extended frame mode)

nrf51422 芯片 SDK 5.1.0 开发包demo(nrf51422 chip SDK 5.1.0 Development Kit demo)

说明：  对AD9959英文数据手册进行了详尽的翻译，并标注出了一些很重要的功能、结构，能加快初学者入门速度，提高编程效率。(This paper makes a detailed translation of AD9959 English data book, and marks out some very important functions and structures, which can speed up the beginners' entry speed and improve the programming efficiency.)

说明：  stm32f407zgt6液晶显示 画画 3D等功能 打电话(Stm32f407zgt6 LCD display drawing 3D and other functions)

第一章开关电源设计的一般考虑 在设计开关电源之前，应当仔细研究要设计的电源技术要求。现以一个通信电源模块的例子来说 明设计要考虑的问题。该模块的技术规范如下(The first chapter is generally considered switching power supply design before switching power supply design, should carefully study the technical requirements to design power. Now with a communication power module design examples to illustrate the problem to be considered. Technical specifications of the module are as follows)

说明：  AD9910-STM32F103-全国电子设计大赛DDS发送端代码 2017年全国电子设计大赛H题(AD9910-STM32F103-DDS Sender Code for National Electronic Design Competition Question H of the 2017 National Electronic Design Competition)

用专业的Rsoft软件 模拟了两直波导与环形波导的耦合情况，并监测其功率变化。 可用于设计光开关或者光调制器(Using professional simulation software Rsoft two straight waveguide with the circular waveguide coupling, and to monitor changes in its power. Can be used to design optical switches or optical modulator)

单片机驱动数模转换器ADC0809的接口程序员(Single-chip driver DAC ADC0809 interface programmers)

采用STC89C52单片机写的硫酸铜建浴设备控制系统。(STC89C52 MCU write using copper sulfate bath construction equipment control systems.)

ZH03B激光粉尘传感器（PM2.5传感器）-炜盛科技(ZH03B Laser Dust Sensor (PM2.5 Sensor) - Weisheng Technology)