Design & Build

Join Dave in the search for an alternative replacement MOSFET. It might not be as easy as it sounds. Talk about how to identify components and circuit function, MOSFET parameters, and using google and parametric searches on supplier and manufacturer websites. Can YOU find a -30V 17A P Channel SO-8 …

Dave tries to find a locally sourced replacement MOSFET for a dumpster repair and battles the RS Components and Element 14 wonky search engines and parametric search engines. Dave’s name was on a US government watch list: https://www.eevblog.com/2014/02/24/element-14-holding-orders-based-on-us-government-watch-list/ Forum: https://www.eevblog.com/forum/blog/eevblog-1387-mosfet-repair-replacement-search/ Podcast: Download

How long does it take for your 400mA multimeter fuse to blow at 600mA? Grab a chair and watch! The amazing unpredictability of fusing current ratings at low overloads. Forum: https://www.eevblog.com/forum/blog/eevblog-1377-the-amazing-unpredictability-of-fuses/ Podcast: Download

How easy is it to take the open source Trezor Model T crypto hardware wallet files and manufacture your own? Or to modify or improve the design? The Trezor is open source hardware, so Dave checks out the Github and looks at the hardware files available and imports into Eagle …

How to build your own DIY light box for photographing PCB’s Dave experiments with a cardboard box, some alfoil, and a hacked YujiLED high cri studio light. https://www.flickr.com/photos/eevblog/albums Forum: https://www.eevblog.com/forum/blog/eevblog-1372-diy-pcb-photography-light-box/ Podcast: Download