Smps.us provides information on switching power supply
Switching Power Supply (SMPS) guide- circuit design, tutorials, reviews, schematics, magnetics, PCB layout, regulator topologies, free simulation software, calculators, thermal management, and other info and resources for electrical engineers and buyers.
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Authority
—/100
Safety
90/100
4 of 5 safety checks passed (Sep 9, 2026).
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Current facts
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We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.
Safety evidence
Missing DMARC (mild)
Site history
Dated record — historical facts always carry their date.