Pull-up and Pull-down: Why Inputs Become Unstable and How to Fix Them

When building circuits using microcontrollers, you may encounter this situation: "The input turns HIGH or LOW on its own even ...
Elektor Magazine

Practical MOSFET Electronics: From Theory to Working Circuits

Discover Practical MOSFET Electronics by Dogan Ibrahim, featuring LTspice simulations, Arduino motor control, amplifiers, and hands-on circuits.
Elektor Magazine

Practical MOSFET electronics - van theorie naar werkende schakelingen

Practical MOSFET Electronics biedt electronici, studenten en hobbyisten een gestructureerde manier om ...
blog.csdn

Arduino驱动大功率LED避坑指南：MOS管选型、米勒效应与防烧毁电路详解

本内容遵循CC 4.0 BY-SA版权协议 从一块12V 50W的LED灯板说起吧。那会儿我想做一个带调光的桌面补光灯，灯板都买好了，电流算下来4A出头，手头只有Arduino Uno。第一次接上去，我干了一件新手都会 ...
blog.csdn

Arduino驱动大功率LED：N沟道MOS管选型、电路设计与调光实战

直接说结论：Arduino的引脚是带不动大功率LED的。哪怕你用个3W的灯珠，额定电流就有700mA左右，而Arduino Uno的I/O引脚最大也就输出40mA，正常推荐别超过20mA。这已经不是软件上写个 digitalWrite (HIGH) 就能解决的问题，必须靠外部功率器件去“放大”电流控制能力。而MOS管，就是干这个活最顺手的选择。