EEVblog No Script, No Fear, All Opinion

Two Japanese guys have been working for 30 years on a “Gavitational Power Generator” over-unity machine that produces 30-100 times the input energy. The Japanese Patent office disagrees in an hilarious Kickstarter own-goal! https://www.kickstarter.com/projects/sunteljp/the-gravitational-power-generator-eco-turbine/description Forum: https://www.eevblog.com/forum/eevblab/eevblab-82-kickstarter-over-unity-gravitational-power-generator!/

Symmetrical Dumpster PC Stacking, just like the Norwest mass turbulence of 1984. Dave’s been dumpster diving again for small form factor PC’s. Forum: https://www.eevblog.com/forum/blog/eevblog-1342-symmetrical-dumpster-pc-stacking/ Podcast: Download

Teardown of a $250,000 1991 vintage IBM 9121 TCM Processor module from a System/390 ES9000 Enterprise Server mainframe computer,. Amazing state of the art 63 layer ceramic hybrid module construction with 2772 pins! And Dave demonstrates an amazing BGA desoldering technique that can only be done on these ceramic hybrid ...

Dave explains why Tesla have switched from a 2170 cell to a bigger 4680 cell announced at Battery Day. What is the new tabless technology and what are the thermal cell and battery pack implications? Discussion on Lithium Ion battery cell construction, chemistry, manufacture, thermal design, internal resistance, heat sinking, ...

Dave visits Transit Systems to take a look at a fully electric bus with a 328kWh battery back running on regular Sydney bus routes. How does it compare to an electric car? https://www.transitsystems.com.au/electric-buses Forum: https://www.eevblog.com/forum/blog/eevblog-1339-looking-at-an-electric-bus/