Principle-of-electronic-load

说明：  使用定时器TIM3输出四路的SPWM波，其中一二路、三四路波形一致，一二路与三四路波形相差180°(Timer TIM3 is used to output four SPWM waveforms, of which one, two, three and four waveforms are identical, and one, two and three and four waveforms are 180 degrees different.)

555定时器（时基电路）是一种用途广泛的模拟数字混合集成电路。1972年由西格尼蒂克斯公司（Signetics）研制；设计新颖、构思奇巧，备受电子专业设计人员和电子爱好者青睐；它可以构成单稳态触发器、多谐振荡器、施密特触发器和压控振荡器等多种应用电路。5 55定时器是一种中规模集成电路，它使用灵活、方便，被广泛应用于脉冲的产生、整形、定时和延迟等电路中。文中介绍了555定时器及其逻辑功能，以及由其构成的多谐振荡器的工作原理，通过举例论述了555多谐振荡器在模拟救护车声响电路中的应用，说明在实际生产中，只要将其各个功能加以综合应用，便可得到许多实用电路。 (555 timer (time base circuit) is a versatile analog-digital hybrid integrated circuit. Trinity Lakes in 1972 by Sigma Corporation (Signetics) development layout and design, the idea of Kit Kat, much electronics design professionals and electronic enthusiasts favor it can constitute a monostable, multivibrator, Schmitt Triggers, and a variety of applications such as voltage-controlled oscillator circuit. 5 Timer 55 is a medium scale integrated circuit, which uses a flexible, convenient, and is widely used in pulse generation, shaping, timing and delay circuits. This paper introduces the 555 timer and logic functions, and its composition multivibrator works, discussed through the example of 555 ambulances multivibrator sound in analog circuit applications, showing in the actual production, as long as Will be integrated application of its various functions can be many practical circuits. )

240128演示程序 采用t6963演示汉字(unsigned int i,j CmdWrite(0x5c) DataWrite(0x00) DataWrite(0x00) CmdWrite(0x46) DataWrite(0x00) DataWrite(0x04) //csr=0x0400 字摸地址80H CmdWrite(0x4c) CmdWrite(0x42) )

说明：  非常好的stc单片机isp下载线制作资料(very good)

18年电赛TI杯无线充电车所有文件（包括代码及PCB）(All documents (including code and PCB) of TI Cup Wireless Charging Vehicle in the 18-year tournament)

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 )

奋斗STM32开发板例程stm32GPIO口LED闪烁(Struggle STM32 development board routines stm32GPIO of port LED blinks)

动态口令认证，skey协议，实现身份鉴别过程。(Dynamic password authentication, skey protocol, identity authentication process.)

Transferred Account Procedure Data Record Format Specification Version Number 3 01 June 2006

PIC单片机实现RS232-C串口通信，汇编语言(PIC microcontroller to realize RS232-C serial communication )