DIY Mini Spot Welder ⚡ "Tiny SMPS Pulse!" DIY mini spot welder based on SMPS architecture: flyback transformer, power MOSFETs, and dual-stage filtering on both the primary and secondary sides. This prototype packs the basic logic of a real spot welder into just a few centimeters: focused pulse, capacitive buffering, and pulsed switching, just like compact spot welding systems. Small size, surprisingly powerful secondary response ⚡🔥 Engineering pushed to the limit with the bare minimum. Comment
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