https://stream.echo6.co/videos/watch/67a54293-2a0b-49cb-a72c-09e2e62efe5e Dave shows the issues with Uni-T multimeters generally 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. http://uni-trend.com/UT71E.html MAX6190 Voltage Reference: http://datasheets.maximintegrated.com/en/ds/MAX6190-MAX6198.pdf OP1177 Opamp: http://www.analog.com/static/imported-files/data_sheets/OP1177_2177_4177.pdf Cyrustek ES51922 DMM chipset: http://www.cyrustek.com.tw/spec/ES51922.pdf Holtek HT1621 LCD driver: http://www.ywslcm.com/Upload/tbDownload/2013-4-13_9_37_49.pdf AD636 True RMS Converter chip: http://www.analog.com/static/imported-files/data_sheets/AD636.pdf Forum: http://www.eevblog.com/forum/blog/eevblog-712-uni-t-ut71e-multimeter-(why-uni-t-meters-suck)/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ Sun, 17 May 2026 05:45:55 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/67a54293-2a0b-49cb-a72c-09e2e62efe5e All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.