Wx-dc12003 Schematic |link|

“Sir, this schematic is wrong. Deliberately. If we build it as shown, the feedback loop will—” She paused. “It will open a breach. Not a big one. But enough to pull something through.”

There is no "official" public schematic, but reverse-engineering by community members at All About Circuits wx-dc12003 schematic

: The module features built-in protections for overvoltage, overcurrent, short circuits, and overheating. Technical Specifications Range / Value Input Voltage (AC) 50V – 277V (85V – 265V typical) Input Voltage (DC) 70V – 390V Output Voltage 5V DC (±0.15V) Output Current Rated Power 3.5W (up to 4W at full load) Efficiency Approximately 80% Size 23.5 x 18.1 x 12.4 mm Resources for Designers “Sir, this schematic is wrong

[Vin 12V] --- F1 (2A) --- C_in (470µF/25V) --- VIN (IC1: LM2596-5.0) | |--- C_ff (optional) | [GND] ----------------------------------- GND (IC1) “It will open a breach

Импульсный AC-DC блок питания WX-DC12003, 5V 700mA

IC1 (LM2596) pins: 1 - VIN (12V) 2 - OUTPUT (SW) 3 - GND 4 - FB (Feedback) 5 - ON/OFF (tied to GND = always on)