UT81B from Uni-Trend is a scopemeter. It is a multimeter with some basic oscilloscope functions. This multimeter can measure what you expect from a normal multimeter: DC V up to 1000V, AC up to 750V, resistance up to 40Mohm, frequency up to 10MHz, capacitance 100uF, AC/DC current 10A (and of course it has also a →
Have a bad habit of overwhelming Firefox with a few dozen too many tabs? So you keep open tabs like libraries keep books… Aren’t you afraid Firefox will consume all your memory? Don’t you fear browser restarts because it takes so long to reload all your tabs? BarTap for Firefox keeps background tabs from loading →
If you’ve ever had a problem getting two chips to talk, or wanted to reverse engineer a protocol, a logic analyzer is the right tool for this. Logic analyzer only detects digital high and low digital states, it records many signals simultaneously and allows to dump data to a computer for analysis. Logic analyzers can →
My Time Domain Reflectometer (TDR) circuit has been available as kit made by Far Circuits. The kit consists only of circuit board and components needed to build the circuit in a small plastic bag (you need to download the building instructions). The original circuit design is from my web page and Far Circuits added 5V →
The XLR connector is an electrical connector design used mostly in professional audio and video electronics cabling applications, for microphones and line level signals. The most common is the three-pin XLR3, used almost universally as a balanced audio connector for high quality microphones and connections between equipment. XLR connectors are superior to many other audio →
EEVblog #60 – Fluke 117 Multimeter Review and Teardown is an interesting review video on a Fluke multimeter. If you are looking for cheaper multimeters check $50 Multimeter Shootout from the same source. You should also look Why cheap multimeters suck. →
Everybody seems to be saying that you can’t charge Apple devices with normal USB power supplies. You need a special power supply from Apple or approved by Apple. I saw this kind of discussion at slashdot some time ago. Usually, device makers need to sign a confidentially agreement with Apple if they want to say →
NetFPGA is a FPGA based line-rate, flexible, and open platform for research, and classroom experimentation. I found the address of this page because one of the blog comments had link to this web site. Looks interesting. The NetFPGA platform promises that it enables researchers and instructors to build working prototypes of high-speed, hardware-accelerated networking systems. →
I visited Assembly Summer 2010 computer festival this weekend. There were many interesting multimedia presentations shown there and some interesting seminars. Check the competition results and view the winners easily on Assembly Summer 2010 gallery and more on YouTube. Check also Future Crew documentary. In the seminars Andreas Jakl from Nokia presented material on programming →
The monkeys got my multimeter article has an interesting video that shows a really crappy design aspect of this IDEAL multimeter. Was this caused by a design or specification problem is hard to say. Very probably, for an economy DMM like this one, the ability to operate the buttons without rear support (i.e. your own →