Boards using the LM331N

Boards in 2 GitHub repositories, designed in KiCad, that use the LM331N by HGSEMI (Internal reference source、Overload protection、Temperature compensation、Full-scale frequency adjustable DIP-8 V/F and F/V Converters ROHS). See how each wires it, with its parts, size, README and files; the LM331N’s symbol, footprint and pinout are on its own page.