EEVblog No Script, No Fear, All Opinion

And update on the shipment of the uRulers and the Tyvek envelopes Tyvek Envelope Printing Tyvek FAQ DuPont Tyvek Users Guide.pdf

An old dumpster dive video I forgot I had, so might as well upload it… Podcast: Download

Sydney Maker Faire Makers at Work BOOK An Engineer’s Guide to Solving Problems BOOK Energy Harvesting kit Jamco Skywriter kit LTC3588 Podcast: Download

What’s inside a modern 18W LED Fluoro T8 replacement tube from German company Mueller Licht? LED tube design Safety Datasheets: www.nxp.com/documents/data_sheet/SSL2109T.pdf www.philipslumileds.com/uploads/409/DS205-pdf www.mueller-licht.de/ (too short to be this LED) www.lextar.com/promote/2013_GILE/PDF/Lextar_SMD_series-13.5.pdf Forum HERE Podcast: Download

A look at some equipment and wafers used in the manufacture of silicon chip wafers. 200mm and 300mm wafers, die, dice sawing, lead-frame manufacture, automated testing machine (ATE) probing, clean room bunnie suits, photo plots, BGA chip thermal test sockets, and the worlds smallest active FET probes at 100 nanometers …

Two brand new Fluke CNX-3000 “basic kit” are up for grabs, plus a (slightly used) Gossen Metrahit World multimeter, and a slightly reviewed ChronoVu LA-8 Kit Deluxe logic analyser. Enter the contest HERE NOTE: You must have 5 posts on the EEVblog forum to see this contest thread! Discuss HERE

Dave installs some more fluoro LED luminaire light replacements in the lab. http://www.mueller-licht.de/ Previous videos: LED tube design Safety https://www.youtube.com/watch?v=saYtnaBp4QA https://www.youtube.com/watch?v=Ym4O0z13HiM Forum HERE Podcast: Download

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 …

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 …

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 …

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 …

A quick followup to Bank Note Validator Teardown, to clarify the LEDs used. https://www.youtube.com/watch?v=qOzP5Vl-CIk Podcast: Download

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

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 …

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