EEVblog No Script, No Fear, All Opinion

Dave demonstrates a little trap with the “High Resolution” mode on modern digital oscilloscopes like the Agilent 3000X series. Podcast: Download

PART 1 is HERE: https://www.youtube.com/watch?v=CIGjActDeoM Part 2 of Dave’s constant current linear regulated lab power supply design. An in-depth look at the LT3080 datasheet, the LM334 current source, and a few more circuit tweaks before it’s ready to build in the next episode to see if it works! And thanks …

Dave shows you how to design a simple constant current and constant voltage lab power supply that can be either software (PIC/AVR et.al microcontroller) or traditional pot controlled. Starting with the venerable LM317, and ending up with an LT3080 solution, and the some thought processes that go into it all. …

How does Amazon’s new $199 Kindle Fire 7″ tablet stack up? Podcast: Download

What’s inside Amazon’s new Kindle Fire 7″ Tablet? Podcast: Download

Dave visited the Manly Warringah Amateur (HAM) Radio Society to see what they are up to… Podcast: Download

Dave powers up an old Lecroy 9384C 1GHz oscilloscope. Will it work? And what’s inside to make it tick? Podcast: Download

Not content with 400 resistors, Dave ups the ante with several thousand genuine OneHungLow resistors, a semi-automated test jig, and some anger and love for the Agilent U1272A multimeter. Podcast: Download

Just how far out is that +/-1% metal film resistor you are using? Is it just random? Does it follow the classic bell shaped Gaussian response? What are the odds of getting one that’s spot on, or right out at the limits? Dave thought he’d find out, the hard way… …

Whist on the lab headlamp tour Dave found an old Commander phone system, and naturally couldn’t resist doing an impromptu teardown! The Victorinox MiniChamp The Victorinox CyberTool Podcast: Download

Tempting fate, Dave goes on a quick tour of the new EEVblog lab, with headlamp! Podcast: Download

As the title says! Thanks to Drieg! Podcast: Download

Dave feels a tad nostalgic, so takes apart his 25+ year old DIY decade resistance substitution box. And some info on how you can build your own. DIY thumbwheel box: http://www.eevblog.com/forum/index.php?topic=4244.0 Podcast: Download

What’s inside a $500 commercial decade resistance substitution box from IET Labs? Dave’s about to find out. http://www.ietlabs.com/decadebox/rsbox.html Podcast: Download

A Krohn-Hite MV106J DC Voltage Standard calibrator landed on Dave’s bench. What’s inside? How does it work? Is it still within spec?, and what’s all this (lack of) Kelvin-Varley and LM299 zener reference stuff anyhow? And no adventure in calibration check is complete without a visit to the TrioSmartCal lab. …