EEVblog No Script, No Fear, All Opinion
Dave shows why Uni-T multimeters generally suck in this teardown (and a little bit of a review) of the $180 UT71E 0.025% accuracy multimeter with power measurement capability.
He also opens the UT71A, UT61E, and compares the input protection and rating with a Brymen BM257.
MAX6190 Voltage Reference
OP1177 Opamp
Cyrustek ES51922 DMM chipset
Holtek HT1621 LCD driver
AD636 True RMS Converter chip
Forum HERE
Hires teardown photos:
Podcast: Download
