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 …
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A teardown of the front end PCB in the HP 35660A Dynamic Signal Analyser. Dave does some preliminary investigation to see what opamps and FET’s are unsed in the analog front end to see if they can be upgraded for better performance. This is more for Dave’s record than interesting …
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Dave explains one of the most confusing parameters in an opamp datasheet, Input Noise Voltage Density, that mysterious nV/RootHz figure. Along with different types of opamp noise, corner noise frequency, and how to calculate output noise spectral density. And how to use a Dynamic Signal Anayser to measure the Power …
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Altium have announced their intention to (finally!) offer a low cost “entry level” PCB design tool. Dave naturally has his Top 5 Tips for Altium to ensure that they don’t screw up this opportunity. Altium Investor Update Be sure to leave your comments on youtube or the blog site or …
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A quick followup to Bank Note Validator Teardown, to clarify the LEDs used. https://www.youtube.com/watch?v=qOzP5Vl-CIk Podcast: Download
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What’s inside an old style bank note/bill accptor/validator for vending machines and the like? How does it detect genuine notes from dodgy ones? Datasheets: IR Sensor 2595 Driver TLV5629 DAC TOP242 Flyback controller Lattice Mach4 PLD MC68HC11F http://pdf.datasheetcatalog.com/datasheet/AdvancedMicroDevices/mXwuvz.pdf Forum HERE Podcast: Download
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Dave explains what causes CRT vignetting problems and how to fix it. A follow up to the HP 35660A Dynmaic Signal Anayser video here: https://www.youtube.com/watch?v=VNsJ8qSk6CI Whiteboard explanation of how a Cathode Ray Tube works, and how it can cause interference to sensitive measurements and the shielding required in a precision …
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Dave repairs a classic HP 35660A Dynamic Signal Analyser (DSA), and does a bit of a teardown with random commentary in the process. Service Manual HERE Forum HERE Podcast: Download
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Dave had a very quick play with the new 4 channel Rigol DS1000Z series oscilloscope with dual channel ARB function generator on the Emona stand at the Electronex 2013 exhibition. And meet some EEVblog viewers. Forum HERE Podcast: Download
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See what’s involved in packing and shipping the µRulers to Australian customers for the Pozzible crowd source funded campaign.
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An impromptu teardown on the Emona stand at the Electronex trade show, of the Picoscope 5000 flexible resolution USB oscilloscope, with a small crowd of EEVblog viewers watching on. Also uses the Tagarno HD ZIP 40x digital magnifier. http://www.tagarno.dk/en/frontpage/products/inspection/home/product-pages/products/digital-magnification-systems/magnus-hd-zip.aspx https://secure1.bluecentral.com/emona/shop/scripts/prodList.asp?idCategory=84 http://www.picotech.com/document/datasheets/PicoScope5000Series.pdf http://www.mouser.com/catalog/specsheets/DataSheetASD5020HS_v2.0.pdf http://www.hittite.com/content/documents/data_sheet/hmc-ad1520.pdf http://www.bizjournals.com/boston/blog/mass-high-tech/2011/01/hittite-microwave-buys-arctic-silicon-devices.html Forum HERE Podcast: Download
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Michael from the Melbourne Connected Community Hackerspace talks about his large build area modular dual independent extruder 3D printer design project. Not much electronics talk here, it’s mostly about the hardware build. http://www.hackmelbourne.org/ http://www.3dprinterbits.com.au/ As usual, if you don’t like this type of content, don’t watch it. Forum HERE Podcast: …
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Jonathan Oxer from Freetronics talks about the Ardusat project and shows his Arduino based cluster board for running Arduino sketches in space at the Melbourne Connected Community Hackerspace http://www.freetronics.com/pages/ardusat-the-arduino-satellite https://ardusat.org/ http://en.wikipedia.org/wiki/ArduSat Forum HERE Podcast: Download
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What’s inside a 9V Alkaline Battery? Are they all created the same? Is Duracell better than Energizer? Dave opens up Duracell, Energizer, Varta, and a no-name generic Alkaline 9V PP3 battery. Podcast: Download
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What’s inside a modern car airbag controller? This is is from TRW and comes from a late model Hyundai. Datasheets: http://www.chemi-con.com/components/com_lcatalog/uploaded/4/7/6/19868903214d9b16734611d.pdf http://www.ihs.com/news/renesas-h8sx1725f-vehicle.htm http://www.epcos.com/inf/30/db/ind_2008/b82793c0_s0.pdf http://www.datasheetarchive.com/dl/Datasheets-SW2/DSASW0023111.pdf http://www.freescale.com/files/sensors/doc/data_sheet/MMA68xx.pdf http://cache.freescale.com/files/sensors/doc/data_sheet/MMA685x.pdf http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00103810.pdf Podcast: Download
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