EEVblog #99 – $100 Multimeter Shootout – Extech Amprobe BK Precision Ideal UEi Uni-T PART 1of2

PART 1 of 2
Dave compares six $100 Multimeters:

BK Precision BK2709B
http://www.tequipment.net/BK2709B.html
Extech EX505
http://www.tequipment.net/ExtechEX505.asp
Amprobe 34XR-A
http://www.tequipment.net/Amprobe34XR-A.html
UEi DM391
http://www.tequipment.net/UEiDM391.html
IDEAL 61-342
http://www.tequipment.net/Ideal61-342.asp
UNI-T UT61D
http://www.uni-trend.com/UT61D.html

EEVblog #99 - $100 Multimeter Shootout - Extech Amprobe BK Precision Ideal UEi Uni-T PART 1of2 Download (5240)

EEVblog #98 – Microsoft InstaLoad Battery Technology – Patent Busting Time?

Microsoft’s new Instaload battery technology allows batteries to be inserted into a product either way around.
Is it one of those brilliant “why didn’t anyone think of that before” moments, or just another silly patent on a really obvious idea?
Is it workable in practice?
Can YOU bust the patent by finding prior art before 2006?

See the Microsoft Patent here:
http://www.google.com/patents/about?id=hVXGAAAAEBAJ

OR DOWNLOAD THE FULL PDF PATENT HERE: http://www.eevblog.com/files/Microsoft%20Instaload%20Patent%20US7527893.pdf

You can get Dave’s T-Shirt here:
http://www.eevblog.com/store

EEVblog #98 - Microsoft InstaLoad Battery Technology - Patent Busting Time? Download (4179)