EEVblog

Dave is a tad obsessed with making a 10,000hr battery life bench multimeter. It’s actually not hard. Forum: https://www.eevblog.com/forum/testgear/10000hr-battery-life-bench-multimeter/

Dave repairs his pesky Kindle Paperwhite with touch screen and charging issues. Forum: https://www.eevblog.com/forum/blog/eevblog-1370-kindle-paperwhite-repair/

Dave debunks the Xiaomi Mi Air wireless charging system that claims to be able to charge at 5W up to several meters using mm wave RF beam steering technology. Where have we heard this before? The Amp Hour 5G episode: https://theamphour.com/430-shahriar-discusses-5g/ https://blog.mi.com/en/2021/01/29/forget-about-cables-and-charging-stands-with-revolutionary-mi-air-charge-technology/ Forum: https://www.eevblog.com/forum/blog/eevblog-1369-xiaomi-mi-air-wireless-charging-busted!/

Part 2, this time looking at different types of active oscillocope probes. Single ended active FET probes, differential active FET probes, current clamp probes, high voltage differential probes, positional current probes, and EMC magnetic and electric field probes. 2MHz Current clamp probe: https://www.eevblog.com/product/cp2100b/ Active FET probe: https://amzn.to/3oq0Q8g EMC probe set: https://amzn.to/39oEqAh Forum: https://www.eevblog.com/forum/blog/eevblog-1368-active-oscilloscope-probes-compared-(part-2)/

Dave answers a viewer technical question about why his circuit is acting up, and goes through a design review outlining the possible problems. Level translation, clocking, schmitt triggers, line driving, loading, buffering, bypassing, and other aspects are discussed. If you want to see more design reviews like this please drop a like and comment. Forum: ...

Dave repairs the Compaq Portable Plus power supply. And takes a look at the schematic and an unusual old documentation system. Forum: https://www.eevblog.com/forum/blog/eevblog-1364-compaq-portable-psu-repair/

Solar FREAKIN’ Roadways has just raised over $1M by selling common stock in the company! AND has scored ANOTHER government contract!, this time from the Department of Defence! Solar FREAKIN’ Aircraft Carriers! https://www.startengine.com/solar-roadways Energy Output: https://monitoringpublic.solaredge.com/solaredge-web/p/kiosk?guid=1e085701-ccb3-4ce5-b107-86e3b5e831dd&locale=en_US Forum: https://www.eevblog.com/forum/blog/eevblog-1363-solar-freakin-roadways-gets-new-funding!/

First Mailbag of 2021 is a skookum bumper! Forum: https://www.eevblog.com/forum/blog/eevblog-1362-a-very-skookum-mailbag/ Spoilers: 00:00 – AvE’s 5lb Copper Widlarizer! https://www.youtube.com/user/arduinoversusevil Making of the hammer: https://www.youtube.com/watch?v=lutiVGV5Omg Final packing of hammer: https://www.youtube.com/watch?v=Exs4kQre62I 05:05 – Avionics Guest Lab from Gary Bertram 10:01 – Koki’o Project Cases: https://www.crowdsupply.com/cowfish-studios/kokio-project-case 12:50 – 1960’s Chinese Analog VOM! + modern replica still made today. 19:35 ...

By popular demand, Dave tears down the dodgy tactile switch from his aircon, and compared with a couple of others. Forum: https://www.eevblog.com/forum/blog/eevblog-1361-dodgy-tactile-switch-teardown/

Dave’s lab aircon control panel has been dodgy for years, time to finally fix it! A simple fault with rather interesting and complicated set of a symptoms based on a (poor?) design decision. Forum: https://www.eevblog.com/forum/blog/eevblog-1360-repair-aircon-control-panel/