EEVblog No Script, No Fear, All Opinion

Another Mailbag, Dave opens his mail. What have people sent in this week? Forum HERE SPOILERS: Parrot clips Tekbox self powered active load Original Sony TPS-L2 Walkman from 1979 Sony DAT Walkman Sony Video Walkman Matrix SR4000 autochromatic tuner SunStar 1:18 scale Delorean Time Machine Soviet Union Elecktronika MK52 Calculator …

Dave explains how BJT and MOSFET transistors work at the silicon chip level. How does a BJT transistor actually amplify current? P and N type doping, charge carriers, conduction channel, field effect, holes and electrons, all the other good stuff. Forum HERE Podcast: Download

A reddit user asks what is the point in learning basic electronics these days when you can do everything with off the shelf modules and boards like Arduinos and the like. They make it super easy to build stuff, so why does anyone need any knowledge of basic electronics any …

Dave goes back 20 years and find an old PC Based Logic Analyser project of his that was published in Electronics Australia magazine back in 1996. He uncovers the original timing diagrams, schematics, and prototype. And tries to resurrect the old Borland Pascal 7 source code and Lattice ispLSI PLD …

What’s inside the a 1987 vintage Sharp X68000 personal computer / gaming system from Japan? Sold exclusively in Japan from 1987 to 1993 this 10MHz 68000 based boasted graphics capability superior to the Amiga and Atari ST. The powerful graphics enabled pixel-perfect ports of clasic games arcade games, and the …

The EEVblog Lab had a HD Dropcam so that people could watch what was happening live in the lab. It worked well enough, but then Dropcam changed their terms and conditions and wanted to merge with Nest (who bought them). This was bothering Dave so the search for an alternative began. Surprising, …

Mailbag time again. Dave opens his mail. What random stuff awaits? Forum HERE SPOILERS: Marble Run video below A vintage Japanese Sharp X68000 video game home computer from the 1980’s Teardowns of an industrial controller, a LED light controller, ABB industrial switchmode power supply, Casio FX-3800P programmable calculator, old Gossen …

Dave explains how to attach an SMD power transistor or regulator to a case to use as a heat sink in this design tutorial. And in the process talks about thermal design, the electrical/thermal analogy, and thermal vias. This is Part 15 of the µSupply Power supply design series. Other …

The 6 month test results for the Solar Roadways Solaroad.nl solar bike path project in the Netherlands are in. Dave compared the results to three local rooftop solar system and debunks the recent media reports that the project produces more power than was expected and that the solar roadway are …

Fundamental Friday Dave explains why some designs have electrolytic capacitors connected in parallel. The answer is more in-depth than you might think. 9 reasons are given and explained, and then some thermal camera fun on the bench. Rubycon capacitor datasheet: http://www.farnell.com/datasheets/1910904.pdf NOTE: Video #741 has been skipped for a reason. …

Dave unboxes the LitePlacer SMD Pick & Place machine kit. Forum HERE Podcast: Download

Dave scores an old Philips/ATL HDI3000 Ultrasound machine. Will it boot? User Manual Service Manual

Dave opens some of the 332 coffee tins full of hardware parts he scored at an ebay auction. What’s inside? Forum HERE World’s biggest component collection video HERE Podcast: Download

What’s inside a professional digital audio mixer? Dave opens a Yamaha DME32 Digital Mixing Engine with multi-channel 24bit audio ADC and DAC and custom DSP processing. Sony video effects unit teardown: https://www.youtube.com/watch?v=d9lZ2-a1P-E User Manual: http://www2.yamaha.co.jp/manual/pdf/pa/english/signal/DME32E.pdf Datasheets: WM8740 OP275 4580 2115 Xilinx CPLD Hires teardown photos: Podcast: Download

Dave uncovers that has to be one of the world’s biggest and most meticulously sorted collections of vintage electronic components! And all this sold for $405 on ebay! Forum HERE Photos: Podcast: Download