Title: Arrived busted, took it apart. Found...
Review: It arrived with no continuity between the two hot leads. Took the unit apart.Discovered one inductor and two capacitors, no printed circuit board, just an extremely poor hand soldering job. Not even sure they used rosin-core solder. They also used very thin wires.I reworked the unit to get it to "work" as intented. It is a basic passive low pass filter circuit with the inductor in series with the supply and one capacitor to ground on each side of the inductor.The inductor was small. 10 Amps? No way.
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