Author Topic: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update  (Read 1762 times)

0 Members and 1 Guest are viewing this topic.

Offline EEVblog

  • Administrator
  • *****
  • Posts: 32164
  • Country: au
    • EEVblog
EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« on: September 11, 2020, 10:42:53 pm »
Destructive teardown o nthe Miniware DT71 LCR meter Tweezers
Plus a lab move update.

 
The following users thanked this post: thm_w

Offline maginnovision

  • Super Contributor
  • ***
  • Posts: 1961
  • Country: us
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #1 on: September 11, 2020, 10:55:16 pm »
Finally the serve their most useful purpose, a destructive teardown. Can't wait to watch(when I have time later).
 

Offline SilverSolder

  • Super Contributor
  • ***
  • Posts: 3424
  • Country: 00
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #2 on: September 12, 2020, 12:23:47 am »

A lot of nice industrial design and ergonomic engineering work went into this product.  What seems to be missing is an amount of "voltnut wizardry", to lift it to the next level!

 

Offline olewales

  • Regular Contributor
  • *
  • Posts: 67
  • Country: pl
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #3 on: September 12, 2020, 02:05:59 am »
Hope there will be strong community support for this in form of open fimrware project. There is not much hardware in AVR component tester either yet devs managed to pull off impressive functionality using it. Clever utilization of those 12bit ADC and DAC could yield amazing results. Even just fixing bugs (functional secondary parameters, predictable auto mode behaviour) would make this device very usable. Absoulte accuracy for this kind of device is not essential anyway
 

Offline CChin254

  • Contributor
  • Posts: 38
  • Country: us
    • My Blog
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #4 on: September 12, 2020, 02:06:55 am »
IC Identification for this device:

Block Diagram:
[attachimg=2]
« Last Edit: September 12, 2020, 03:15:30 am by CChin254 »
 
The following users thanked this post: thm_w

Offline ckambiselis

  • Contributor
  • Posts: 48
  • Country: fi
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #5 on: September 12, 2020, 09:50:42 am »
Destructive teardown o nthe Miniware DT71 LCR meter Tweezers
Plus a lab move update.



Could we have a few high-res pics of the traces on the twizzers, just to check what goes where, so we can make a cable to connect them to a classic LCR meter?

Thanks
 

Offline jonovid

  • Frequent Contributor
  • **
  • Posts: 891
  • Country: au
    • JONOVID
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #6 on: September 13, 2020, 05:24:31 am »
reverse engineer the tweezers hinge design. 7:15 on the video.
duplicate or similar by 3D printing the hinge, add your own gold plated tips & some silicone test leads plus banana plugs.
hey presto you have your ideal test probes.   :-+
Hobbyist with a basic knowledge of electronics
 

Offline Bud

  • Super Contributor
  • ***
  • Posts: 4445
  • Country: ca
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #7 on: September 13, 2020, 11:32:12 pm »
With this tweezers with neodymium  magnets on the bench you now have to worry about keeping them away from metal tweezers to prevent magnetizing the metal tweezers.
Facebook-free life and Rigol-free shack.
 
The following users thanked this post: SilverSolder

Offline ckambiselis

  • Contributor
  • Posts: 48
  • Country: fi
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #8 on: September 14, 2020, 02:28:30 pm »
With this tweezers with neodymium  magnets on the bench you now have to worry about keeping them away from metal tweezers to prevent magnetizing the metal tweezers.

Well if you are using quality stainless steel tweezers, that shouldn't really be a problem.
« Last Edit: September 14, 2020, 02:55:07 pm by ckambiselis »
 

Offline SilverSolder

  • Super Contributor
  • ***
  • Posts: 3424
  • Country: 00
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #9 on: September 14, 2020, 04:03:54 pm »
With this tweezers with neodymium  magnets on the bench you now have to worry about keeping them away from metal tweezers to prevent magnetizing the metal tweezers.

Well if you are using quality stainless steel tweezers, that shouldn't really be a problem.

I have found even the tiny amount of magnetism in high quality stainless can be an annoyance.   I even have a demagnetiser on my desk to solve that problem!
 

Offline Cnoob

  • Regular Contributor
  • *
  • Posts: 125
  • Country: gb
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #10 on: September 17, 2020, 05:59:47 pm »
you get Peek , Carbon+ Peek and ceramic tips for tweezers which should solve the magnetism issue.
 

Offline SilverSolder

  • Super Contributor
  • ***
  • Posts: 3424
  • Country: 00
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #11 on: September 17, 2020, 06:21:21 pm »
you get Peek , Carbon+ Peek and ceramic tips for tweezers which should solve the magnetism issue.

They look reassuringly expensive!  :D

But if it is the difference between something that works, and not...
 

Offline Cnoob

  • Regular Contributor
  • *
  • Posts: 125
  • Country: gb
Re: EEVblog #1336 - DT71 LCR Tweezer Destructive Teardown + Lab Update
« Reply #12 on: September 18, 2020, 05:52:37 pm »
you get Peek , Carbon+ Peek and ceramic tips for tweezers which should solve the magnetism issue.

They look reassuringly expensive!  :D

But if it is the difference between something that works, and not...

Not cheap but I like the ideal-tek ones and they  are great for holding down 30AWG wire without out damaging the insulation when doing point to point wiring on square/round pad boards.
 
The following users thanked this post: SilverSolder


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf