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单片机频率计
- 此频率计是用单片机89C51和几块数字电路几个三极管，和一个微波集成电路构成。可测量频率最高为2G！分辨力为1HZ！电路中R16---R27电阻阻值为1K。这文件包里有两符制作成功后的图片！ 二个SCH。一个PCB文件。一个PDF文件。和一个程序HEX文件。制作的时候只要按线路板接好元件，然后把程序HEX文件烧写到单片机内，就可以调试了，希望大家成功。其中高稳定振荡电路SCH文件是我新加上的。如果大家有条件用上这电路也不错。那样频率计将更稳定。频率计的PCB是我设计的。 设计得不太好，希望大家
zhuansubiao
- 汽车电子转速表电路，包括原理图和印制板图，使汽车电子的典型电路，值得学习-automotive electronic tachometer circuit, including schematic and PCB plans, the typical automobile electronic circuits, it is worth learning
main
- 足球机器人的控制电路板（带PCB）实际应用项目-Soccer robot control circuit board (with PCB) the practical application of project
diandongchecircuit
- 为一家电动自行车厂家设计的电路，里面有protel原理图+pcb，控制器是C8051，各种保护电路都有，此电路已成功在实验平台上调试通过，性价比高，请放心参考。研发电动车驱动电路的朋友不妨看看哦。-An electric bicycle manufacturers to design circuit, there are Protel schematic+ pcb, controller is C8051, there are all kinds of protection circuits,
pcb
- 高速PCB設計指南,介绍了快速设计电路中快捷键，方法-High-speed PCB design guidelines, introduced the design of circuits Express shortcut keys, and methods
TDA2030
- TDA2030是许多电脑有源音箱所采用的HI-FI 功放集成块。它接法简单，价格实惠。额定功率为14W。电源电压为±6～±18V。 输出电流大，谐波失真和交越失真小（±14V/4欧姆，THD=0.5 ）。具有优良的短路和过热保护电路。其接法分单电源和双 电源两种。pdf中均有两种接法的原理图并附有pcb布局-TDA2030 is active in many computer speakers used HI-FI amplifier integrated block. It is co
yaoyaoa1
- 摇摇棒制作全过程，包括PCB、程序、电路、设计方案。还有光立方的PCB-Shook his stick and the production process, including PCB, programs, circuits, and design. There are light cube PCB
USB-to-485
- 232转485接口电路，包括原理图，PCB板，已实际测试通过，请放心参考并使用，自动识别485或422接口通讯。-232 to 485 circuits, including schematics, PCB board, had actually been tested, please rest assured that the reference and use, automatic identification of 485 or 422 interface communication.
building-printed-circuit-board
- How to build a PCB scratch. For small circuits-How to build a PCB scratch. For small circuits