Simple PWM Modulator Allows DC Control Signal To Drive LEDs
by Ahmad Ayar, associate member of the technical staff, Maxim Integrated Products Inc., Sunnyvale, Calif., Electronic Design, Sep 28 2008
Focus:
Dimming LEDs with a pulse-width modulated control signal enables more-efficient LED operation at higher current levels. A dual comparator plus a few passive components forms a circuit that converts a 0- to 5-Vdc control signal to a 500-Hz PWM signal with 100% adjustable duty cycle.
What you’ll learn:
- How to build a simple circuit for PWM dimming of LEDs
Notes:
ED's Ideas For Design
View this Source (requires a PDF Viewer installed on your device)
© 2025 How2Power. All rights reserved.