PWM LED Dimmer

Design by: 10167

This PCB is for a PWM Dimmer, intended for dimming LEDs and other lights. It uses an IRFZ44NPbF FET for power switching. It will switch up to 2 amps, which is limited by the relay contacts. The trace width would otherwise allow up to 3.75 amps. (75 mil traces for the power wiring) It uses two potentiometers to control brightness, one to adjust the dimming level, and one to adjust the minimum brightness, if so desired. There's a 3 position switch that controls ON, OFF, and AUTO, where AUTO is actuated using an external switch. I'm using a magnetic door switch for my system so that it will light up when the door is opened. Schematics and parts lists are available. The PCB was designed using Altium Designer. This is my first PCB posting here, and so please let me know if I need to change or correct anything.