What's inside an EC Apparatus brand constant voltage constant current power supply used for Electrophoresis - the separation of particles in a fluid by using an electric field.
You can get these supplies quite cheaply on ebay if you look around.
A quick reverse engineering of the circuit provides some insight into what's happening.
http://en.wikipedia.org/wiki/Electrophoresis
http://en.wikipedia.org/wiki/IGBT
http://en.wikipedia.org/wiki/Snubber
Datasheets:
http://www.irf.com/product-info/datasheets/data/irg4ph50k.pdf
Forum: http://www.eevblog.com/forum/blog/eevblog-530-electrophoresis-power-supply-teardown/
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What is Bit Banging and how to bit bang a SPI bus.
Also how to use an Excel spreadsheet to do logic simulation.
Forum: https://www.eevblog.com/forum/blog/eevacademy-3-bit-banging-spi-tutorial/
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Ever wondered how they test mobile phones for radiation and impact upon the human body? Dave gets a tour of EMC Technologies $1M+ mobile phone (and WiFi) radiation Specific Absorption Rate (SAR) testing facility.
Thanks to Jason Cameron from EMC Tech.
http://www.emctech.com.au
See the machine in operation here:
http://www.emctech.com.au/SAR/SAR_movies.htm
More retro computer time!
Repair of a 1992 vintage Amstrad NC100 Notepad
Forum Topic:
http://www.eevblog.com/forum/blog-specific/eevblog-385-amstrad-nc100-notepad-repair/
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Dave shows you a handy tip on how to see *through* a product using a Flir thermal imaging camera with the cover *on*. Thus being able to maintain the correct airflow, whilst at the same time being able to view the thermal map as if the cover was off!
Forum: http://www.eevblog.com/forum/blog/eevblog-622-how-to-make-your-product-see-through-with-a-thermal-camera/
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Hack A Day are running the biggest electronics hardware design contest ever. The winner gets to fulfill every nerds fantasy, a trip to space!
Dave is going to be one of the judges, so start sucking up now...
The contest is to design an "open connected device". So basically anything that is open source (as possible), and connected to something (as possible). The rules are quite open, use your imagination, and the sky is NOT the limit!
http://hackaday.io/prize
Discuss on the forum here: http://www.eevblog.com/forum/chat/announcement-hack-a-day-prize-win-a-trip-to-space!/
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NOTE: This is NOT a substitute for the real Mailbag episode, which is a separate video.
This is just complete behind the scenes footage of Dave shooting a Mailbag episode, as watched by several hundred people live on Youtube, and automatically recorded by Youtube.
With behinds the scenes commentary of how a typical video shoot goes.
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