EEVblog No Script, No Fear, All Opinion

Dave discovers a potential systemic manufacturing issue with Lifud LED light drivers. A repair of two of Dave’s failed Lifud LED studio panel light drivers. Forum HERE Podcast: Download

What is this mystery bit of Sony equipment? It’s probably not what you think… A look at an obscure bit of niche industry gear. Actual teardown starts at 10:00 Forum HERE Podcast: Download

What’s inside a DIP crystal oscillator module? A 2 minute teardown turns into 17 minutes, because, well, it’s Dave. Includes a revisit of the bypass capacitor video. Oscillator chip datasheet Forum HERE Podcast: Download

The NTSB today released the report into the fatal Uber Autonomous car accident. TLDR; The RADAR, LIDAR, and cameras DID detect and classify pedestrian bicycle correctly. The system DID determine that emergency braking was required. But Uber disabled the systems emergency braking feature in autonomous mode. Uber also disabled Volvo’s …

An unbelievable fault in Dave’s Alesis M1 Active 520USB powered studio monitor speaker. Can you discover the culprit before Dave does? This was supposed to be a boring trivial repair of a power LED, but it turned into something much more interesting. Forum HERE Teardown VIDEO Podcast: Download

Dave looks at the 5 year data on his 3kW home solar power system. What was the payback period? And will adding a Tesla Powerwall 2 lithium ion battery energy storage solution be worthwhile? PVoutput data HERE Forum HERE Installation VIDEO Previous Update HERE Podcast: Download

An in-depth practical visualisation of how bypass capacitors work at both high and low frequencies. Bulk decoupling capacitors vs bypass capacitors. Capacitor placement and types are tested and the results examined. How package inductance can have a large effect. Loop area and what is means, it’s impact on EMC emissions, …

Some quick extra tests on the 6 of the 14 pocket multimeters from Part 1 Which meter *won’t* survive testing? Forum HERE Podcast: Download

14 pocket multimeters from $8 to $65 are torn down and compared for feature set and build quality. Ranging in price from $8 to $65, which one is the best in each price category? Part 2 coming tomorrow. Timestamps: 6:07 XB866 Wun Hung Lo 9:42 ANENG AN8203 15:47 $10 Shootout …

What does the UL type approval compliance logo on consumer products mean? What about TUV, ETL, GS, CCC and other marks? Dave breaks down safety standards and compliance marks. Forum HERE Podcast: Download

Can a product work without ANY bypass capacitors? Dave finds out by “Muntzing” the Gigatron TTL computer. Lots of interesting talk on bypassing, grounding, probing, signal integrity, ground loops and noise and crosstalk. Forum HERE Links: http://www.electronicdesign.com/boards/whats-all-muntzing-stuff-anyhow http://web.mst.edu/~jfan/slides/Archambeault1.pdf https://ewh.ieee.org/r3/enc/emcs/archive/2012-10-10b_DecouplingMyths.pdf http://www.ti.com/lit/ml/slyp173/slyp173.pdf https://www.xilinx.com/support/documentation/user_guides/ug483_7Series_PCB.pdf https://www.xilinx.com/support/documentation/application_notes/xapp623.pdf Podcast: Download

Review of the Gigatron.io TTL 8 bit retro computer kit. The processor is built entirely using TTL logic. http://www.gigatron.io Live 4 hours build: https://www.youtube.com/watch?v=wECZoUNd2GY Forum HERE Podcast: Download

More mailbag! Forum HERE SPOILERS: Brads Projects: https://bradsprojects.com/ Microelectronics Timeline Poster http://www.engineeringminds.org/ Big Clown IoT kit: http://igg.me/at/bigclown USB TouchPad: https://www.kickstarter.com/projects/jacoburge/touchpad-the-arduino-compatible-customisable-keybo Fluxgate compass teardown Oregon Scientific temperature sensor teardown CCES-33 Calculator Kit The crustiest multimeter teardown in history Alcatel 565 Mbit/s PDH mux Podcast: Download

A look at the amazing construction techniques used in the world’s thinnest calculator by Casio Destructive teardown on the Casio SL800 credit card calculator from 1983. It’s more interesting than expected! Forum HERE Podcast: Download

Power supply repair attempt on an i7-2600 Dell Optiplex 990 dumpster PC. An update on previous dumpster PC’s. And the bunker to the rescue. Forum HERE Podcast: Download