Posted on May 20th, 2015 4 comments
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 machine was highly sought after by gamers. Running a custom operating system called Human68K, it even had 3D goggle support.
Hires teardown photos:
Posted on May 19th, 2015 4 comments
Mailbag time again. Dave opens his mail. What random stuff awaits?
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 digital multimeter and a German analog meter.
Surprise visit by Sagan
Two Kickstarter Projects:
Bluetooth Audio Link (BAL)
A solar powered propeller hat and electronics business card http://shop.asmyldof.com/
ICL7136 Multimeter chipset
Posted on May 15th, 2015 6 comments
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 videos are HERE
Posted on May 13th, 2015 12 comments
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 now viable as a result.
And which country is doing Solar Roadways right? – South Korea!
Solaroad Press Release
Popular Mechanics Story
Three solar installations in the Netherlands used in the analysis:
Solar panel datasheets:
Video of the Solar Roadway in South Korea
Posted on May 9th, 2015 8 comments
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.