Vpm2sm Datasheet -

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Integration: High level of integration designed to save PCB space and reduce the need for external components.

Dual Primaries/Secondaries: Often features dual 115/230V primaries and dual secondaries for flexible output configurations (series or parallel).

But as I read on, I discovered that the chip had a much more sinister purpose. It was allegedly used in a clandestine government project codenamed "Echelon." The goal of Echelon, I learned, was to create a network of super-sensitive surveillance devices capable of intercepting and decoding even the faintest whispers of electronic communication.