1 Testing dodgy 100W LEDs from ebay sellers.
A bigclive video on white LEDs that explains why some packages contain several junctions in series and raises doubts about the quality of cheap sourced parts.
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7 videos. Ranked by independent recommendations, not by views.
2 Inside a 125A DC circuit breaker. Unexpected arc quenching feature.
Big Clive shows why a DC arc keeps burning where an AC arc dies at the zero crossing, explaining why DC breakers need magnets and arc chutes.
3 USB soldering iron test and teardown with schematic.
Big Clive's look at a cheap USB soldering iron, cited to show it manages small jobs while warning about power, tips and static.
4 Disassembly and schematic of an arc lighter.
Big Clive takes apart an arc lighter and draws out its circuit, cited for the schematic and estimated electrode voltage.
5 Inside some dodgy Chinese USB power supplies from Greece.
Big Clive examines some USB power supplies and finds poor isolation, used to show how a mains charger can fall short on safety.
6 Shorting out a fully charged cheap lithium jump starter. (It didn't end well.)
BigClive opens a lithium jump starter power bank, estimating its peak current with improvised methods and showing cable and cell resistance effects in practice.
7 eBay clock kit. Full build and setting guide.
Big Clive assembles an electronic kit with a seven-segment display and examines its board, linked as a reference when troubleshooting the same kit.
