这里是变频声控器电路的资源，自取，不谢哦~ (2022-05-04, Altium, 5KB, 下载0次)
http://www.pudn.com/Download/item/id/1651645800893703.html
该资料为一款基于DSP设计的数字化全桥变换器电源原理图和PCB，对数字化大功率电源感兴趣的可以下载参考一下。
This material is a DSP based digital full bridge converter power supply schematic diagram and PCB, interested in digital high power supply can download reference. (2021-04-02, Altium, 2657KB, 下载3次)
带回退、前进按钮的MP3播放器PCB原理图及封装
PCB schematic diagram and package of MP3 player with back and forward buttons (2021-01-04, Altium, 1166KB, 下载0次)
超声波振动原理，振动频率为10000赫兹，可以任意调节雾化时间，雾化开关及雾化量大小，符合医疗行业规范。
Ultrasonic vibration principle, vibration frequency of 10000 Hz, can arbitrarily adjust the a time, switch and amount, in line with the medical industry specifications. (2020-06-14, Altium, 1102KB, 下载6次)
ST公司 STM32G474 Nucleo-64官方电路设计图，原理图+PCB。模拟混合数字控制器，PCB 4层板设计，可以作为混合数字板的4层板设计参考。自带ST-linkV3仿真器，可直接USB线连接PC进行下载调试程序。
ST company stm32g474 nuclear-64 official circuit design drawing, schematic + PCB. Analog hybrid digital controller, PCB 4-layer design, can be used as a reference for hybrid digital board 4-layer design. It is equipped with St linkv3 emulator, which can directly connect USB cable to PC for downloading and debugging program. (2020-02-05, Altium, 7894KB, 下载7次)
使用Jk触发器实现PLL鉴频器电路 还没仿真测试 只作为参考
jk flipflop for PLL frequency discriminator (2019-08-12, Altium, 15KB, 下载1次)
本封装为三脚蜂鸣器的PCB封装，可直接使用
The PCB package package for the tripod buzzer and can be used directly (2018-04-20, Altium, 423KB, 下载5次)
基于TI的PGA300芯片 评估板文件，包括原理图,PCB，以及其他说明文档
PGA300 chip evaluation board file based on TI (2017-10-13, Altium, 230KB, 下载10次)
51单片机控制自动窗帘模拟电路，有时钟、存储器、驱动等，仅有硬件设计！
51 single-chip control automatic curtains analog circuits, clock, memory, drive, etc., only hardware design! (2017-03-31, Altium, 301KB, 下载2次)
手转动电机输出轴，编码器记录数据，上电后自动控制电机复现刚才的动作！
The motor rotates the output shaft of the motor, and the encoder records the data! (2017-03-17, Altium, 8145KB, 下载1次)
开关逆变器项目源代码和电路原理图,详见附件！
Inverter source code and circuit schematics (2017-03-13, Altium, 20KB, 下载14次)