What's the verdict on the new cheap LCR tweezers? - Page 1
Forum section: electronics / testgear

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: September 11, 2024, 02:58:09 pm
content: I see lots of threads about the following tweezers:Mastech MS8911ZOYI ZT-MD1FNIRSI LCR-ST13S QPLThere is lots of info to sift through.Is there a consensus on which is the best of the cheap tweezers?Which would you choose?

author: iet
author_rank: Frequent Contributor
timestamp: September 11, 2024, 03:13:39 pm
content: HiA completely logical start to this topic. Before choosing tweezers, you need to decide on its parameters and where it will be used. After all, the scope of application of tweezers is very wide. Conventional measurements, repair, research, selection and sorting of various components. In-circuit measurements, component identification, search for faulty components.

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: September 11, 2024, 04:40:29 pm
content: Quote from: iet on September 11, 2024, 03:13:39 pmThat is way to much detail for these cheap tweezers. I'm talking just in general as far as quality, fit and finish. I guess having at least some sort of accuracy would be nice also.

author: KungFuJosh
author_rank: Super Contributor
timestamp: September 11, 2024, 04:45:17 pm
content: The cheap tweezers are cheap. If you want some kind of accuracy, get the well respected Shannon ST42. They're inexpensive for what they are, and excellent at what they do.

author: iet
author_rank: Frequent Contributor
timestamp: September 11, 2024, 05:02:13 pm
content: Quote from: 4thDoctorWhoFan on September 11, 2024, 04:40:29 pmYou came at it from an even more interesting side. The quality of the case, assembly, tips, mounting method, battery. In general, there is something to talk about. And the 3S QPL tweezers are still a dark horse for me, although I have seen Chinese videos.

author: DaneLaw
author_rank: Frequent Contributor
timestamp: September 11, 2024, 05:16:10 pm
content: There is quite a few videos comparing them to DE5000 and Shannon Tweezer..also from users here on this forum, here on the MD1

author: Aldo22
author_rank: Super Contributor
timestamp: September 11, 2024, 05:28:34 pm
content: The ZT-MD1 is dirt cheap and I like it a lot:https://www.aliexpress.com/item/3256807361654004.htmlMore expensive is probably even better, but I don't need that at the moment.Here I have taken a few measurements using the new "save and export" feature.But I'm not sure whether the measurements written on the board are more accurate than the ZT-MD1.https://www.eevblog.com/forum/beginners/questions-about-reference-resistance-at-aliexpress/msg5628211/#msg5628211

author: skander36
author_rank: Frequent Contributor
timestamp: September 12, 2024, 12:15:01 pm
content: LCR ST1 read calibrated components as follows:L - 779.5uH as 785.1uH (0.6V 1KHz)C - 120.16 nF as 121,3nF (0.6V 1KHz)R - 40.192 Kohm as 40.18 Kohm (0.6V 1KHz)On diode test will fail, because they use the same signal (0.6V/ AC !!!) used for RLC test to open a diode. So the device will display 0.65V in both directions.Good for a quick test of LCR components but not a replacement for a good LCR tester.