STC12C5410AD_XLF1

开关电源测试 标准 (Switching power supply testing standards)

通过一个简单例子，说明C语言对于学习单片机的重要性，有助于新手的入门.(By a simple example to illustrate the C language for learning the importance of SCM to help novice entry.)

实现射线源控制，包括电压，电流，大小焦点。还有图片按钮。(Achieve-ray source control, including voltage, current, the size of the focus. There are picture buttons.)

说明：  系统工作电源AC220V 根据室内光线调节遥控灵敏度。 主控室电脑负责接收由控制终端传来的遥控信号播放相应多媒体影音文件； 通过主控电脑也可直接点播各展品文件，同时控制打开对应的展品照明； 遥控终端接收激光棒控制信号，控制开灯照明正在解说的展品，并通过通信总线通知主机播放相应文件； 通信中继器负责全部终端与主机间的双向信号传递； 扩展功能：设计上位机播放操作软件，控制照明灯亮度。 (无)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

很好的一个东西，希望对大家有所帮助，这是关于DS1302的一个程序(Good thing, we want to help, this is a program on DS1302)

nrf2401M16无线模块开发案例，很实用哦(nrf2401 wireless module development case)

基于stm32的红外遥控器程序资料源码 (stm32 control)

直流斩波变化的仿真和一些参考文献 可以学习一下(The simulation of dc chopper change and some references can learn )

本程序是虚拟示波器，可以显示多条曲线波形，调节幅值和时间(Oscilloscope can display multiple curve )