(110-260) VAC - 12 VDC / 2A SMPS with Line Filter

Nice product and proper voltage

The buck converter works well, with good isolation between the primary and secondary sides. The PCB design is solid, but adding a cut-out between the transformer would be better to prevent moisture from creeping into that space. The power supply runs without noise 2 Amps and can handle 3 Amps without issues. It also shuts down in over-current situations. The components are properly rated. The DC link capacitor is a 22uF 450V, which is well above the 353V peak - this is great not to see cheap 400V caps there. The output filter capacitors are 35V 680uF, but I suggest using 16V 1000uF capacitors instead for better filtering. The electrolytic capacitors are from "HYNCDZ", a Taiwanese brand that makes reliable, certified capacitors. The AC X2 metallized film capacitor is from "TENTA", a company known for making good film capacitors. There's a common mode choke on the input to filter any common mode noise, which is good to see. There's also a class Y capacitor for reducing any common mode noise from secondary caused by primary side switching. There are two minor issues: 1. I didn’t see any varistor or TVS diodes for surge protection. Adding them would be a plus. 2. I’d also recommend a TVS diode like P6KE15A on the output to limit surges. A MAJOR FLAW is that at 2.17 Amps, the drum-core filter inductor on the DC output side overheats, reaching over 150°C and giving off a burning smell. I haven’t measured the DCR or inductance of the inductor yet. Even though the power supply is rated for 2A, I’d suggest using a low-value inductor - between 2.2uH and 4.7uH - rated for 3 Amps or more saturation current, with a low DCR (no more than 0.05 ohms) to handle 3A easily, keeping heat dissipation under 0.5W and voltage drop at 0.15V at 3A.

It was a great help for me to replace the corrupted one instead of pirchasing a new one. Easy to solder in.

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Good product

Very good powersupply

Not working after 1min voltage drop worst product

Timely delivery