EEVblog

Dave and Chris have some news on The AmpHour

Want to use a single cheap momentary action push button switch to toggle your circuit power on and off? Try this circuit on for size.

Teardown Photos HERE What’s inside the Marconi Instruments 2023 9KHz to 1.2GHz Signal Generator?

Some tracking pre-regulator simulation fun in LTspice. Part 13 of the PSU design series.

Previous Video HERE: http://www.youtube.com/watch?v=xa9Lyb45oJM Rev C Schematic HERE: http://www.eevblog.com/projects/usupply/ Part 12 in the PSU design series. A thorough look at the Rev C schematic and all the changes. 18650 Lithium Ion battery charger, software controlled switching pre-regulator, replacement of the uCurrent capability, return of the PWM DAC, accommodating the Wiznet Ethernet module, and a whole lot more.

Part 11 in the PSU design series. This time it’s the housing design based on the new Rev C schematic, and the secret reason behind the project! The next video will follow with an overview of the Rev C schematic.

Dave & Phil try to calibrate and print something for the first time on their Makerbot Thing-O-Matic. But as Murphy always ensures, it turns into a troubleshooting bonanza, where much hair is lost, but much knowledge gained…

Teardown photos here: http://www.flickr.com/photos/eevblog/sets/72157629559990345/ Sagan needs his keyboard repaired, or daddy is in the dog house. Gotta tear it down, to fix it…

http://www.diptrace.com?source=eevblog A 1 hour non-edited video of Dave playing with the DIPtrace PCB package for the first time. This is a not a tutorial, it’s just a random first impression of using the program.

Part 1 HERE: http://www.youtube.com/watch?v=xRXEc7pB0o0 An unedited hour long video of Dave playing around with the library editor and PCB modules in KiCAD for the first time.

A continuous 45min screen cast of Dave installing and running KiCAD for the first time, along with his first impressions and rants about things he finds along the way, mainly with the schematic editor portion of the program. How easy and intuitive is it to use the schematic editor for the first time?

Is the Agilent meter alone in slow recovery from mains overloading on the ohms range? Let’s find out…

What’s in Dave’s Mailbag? Send to: PO Box 7949 Baulkham Hills BC Baulkham Hills NSW 2153 AUSTRALIA

Dave is tired of hearing comments that ESD work mats affect your measurements. So here’s proof that they don’t. The mat is like this one here: www.oritech.com.au/productDetail.aspx?productID=20512

TEARDOWN: http://www.youtube.com/watch?v=YsTZuPN7wQQ FIRMWARE BUGS: http://www.youtube.com/watch?v=1fC382Tog0k http://www.youtube.com/watch?v=lmGi7BZS5NM PC INTERFACE & DATA LOGGING: http://www.youtube.com/watch?v=kSmiDzbVt_U A review of the Agilent U1272A multimeter. How does it compare with the Fluke 87-V it is aimed at? If you are looking for data logging solutions, visit Measurement Systems.