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AC-DC power supply board based on HLK-PM01 or similar modules

AC-DC power supply board based on HLK-PM01 or similar modules (HLK-PM03, HLK-PM24, etc.) with the same footprint. The board provides screw terminals with 5mm pitch, for AC input 100-240 V, and screw terminals with 3.5mm pitch, for DC output 3-24 V. Additionally, there are 4 points for mounting on compatible 10.16 mm pitch backplates.

Schematic

Schematic

Board with components soldered	Bare single PCB	Panelized PCB

Usage example 1

Wi-Fi relay equipped with an ESP32 module powered by AC 100-240 V, with dry contact output. The microcontroller and relay boards are powered by a 5 V power supply board.

AC-DC power board at bottom	Power wires connected	Backplate fixed to enclosure