HT3117

这是一本超声波2级考证的一本书，也是超声波专业学习者和研究者的基础书籍，很实用的。(This is a book about the ultrasonic level 2, and it is also the basis of learners of ultrasonic professional and researchers books, very practical.)

Texus Instrument bQ2057 IC charger pcb for Sprint Layot files

能够快速读取电子海图，还有简单的显示功能(ENC )

提出了一种无电流传感器的三相 PWM 整流器控制策略。系统采用双闭环控制，外环 PI 调节器控制直流侧输出电压，内环通过滞环调节器控制有功功率和无功功率，达到单位功率因 数运行的目的。根据整流器的数学模型通过电流重构可获得网侧电流，以实现无电流传感器控制。 仿真实验证明该方案具有良好的控制性能。(In this paper a current sensorless control strategy of three-phase PWM rectifiers is presented. Double close-loop control method is applied in the system. DC voltage is regulated by the external loop PI regulator. The system can operate at unity power factor by controlling the active and reactive power with two inner loop hysteresis controllers. The input AC current can be reconstructed the mathematical model of PWM rectifiers in order to eliminating current sensors . The simulation results prove that the system has good performance.)

说明：  此代码为在proteus中仿真代码，实现功能：利用液晶显示时间，通过按键调节时分秒。(This code is a simulation code in proteus. It realizes the function of adjusting the time and seconds by keystrokes using liquid crystal display time.)

说明：  Sonoff-Tasmota ESP8266 源码文件(Sonoff-Tasmota ESP8266)

STC12C5A60S2的8路10位AD转换程序，本人亲自写的，绝对好用。(8 10-bit AD conversion process in STC12C5A60S2 , personally written , absolutely easy to use . )

基于单片机的数控开关电源设计，带仿真和详细程序。(NC-based single-chip switching power supply design, with simulation and detailed procedures.)

Remote control driver for the TV-card based on bt829.

lpc1788-1_2_led_systick 例程描述： 本例程使用 Systick 实现流水灯。 操作过程： 将代码运行即可，开发板上四个 LED 灯呈现流水灯模式闪烁。 (Lpc1788-1_2_led_systick Routine Description:   This routine uses Systick to realize the water lamp. Operation process:   The code can run, the development board four LED lights show water lights flashing mode.)