- Published in issue 9/2019 on page 12
Flicker-free LED Dimmer
Featuring constant current and high efficiency
At first glance, dimming LED lamps appears rather simple. Take a PWM output from any desired microcontroller, use this signal to drive a power MOSFET, and you’re done. However, in this article we take a different approach – certainly not new, but often overlooked – that gives perfect, flicker-free LED dimming with high efficiency. The circuit is built with ordinary components, which also makes it suitable for educational purposes.