EEVblog #712 – Uni-T UT71E Multimeter (Why Uni-T Meters Suck)

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

from EEVblog - The Electronics Engineering Video Blog http://ift.tt/1v6RpJk

via Yuichun