2 layers100 × 74.5 mm

SwitchingBoard
HMGrunthos/InrushTimer
Peak detecting transformer inrush current limiter/timer (TRIAC/contactor driver)
53 parts1
KiCad boards from 3 GitHub repositories tagged “transformer”, the most starred first; open any of them in PCBKit.

HMGrunthos/InrushTimer
Peak detecting transformer inrush current limiter/timer (TRIAC/contactor driver)

essen48183/MinAI
A single-file C++ transformer built to be read — every mechanism of a modern LLM in ~780 lines, with a textbook companion.

omarothman2004/Isolated-DC-DC-Flyback-Converter
An isolated flyback power converter PCB that uses a custom high-frequency transformer. The transformer acts as a galvanically isolated, coupled inductor.