If you're looking for a schematic diagram related to this part, here are a few steps and considerations that might help:
This often indicates the PWM IC is entering "hiccup mode" because of an output short circuit or a failure in the feedback loop. Safety Warning wx-dc12003 schematic
Note: I assume you mean the WX-DC12003 power-supply / DC converter module (common low-cost board found in consumer electronics). If you meant a different WX-DC12003, tell me and I’ll adjust. If you're looking for a schematic diagram related
: A high-frequency switching transistor (often integrated into the PWM controller) drives a small isolation transformer. If we build it as shown, the feedback
“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.”
