Author Topic: Vintage Triplett 660-R, and AA Battery question  (Read 478 times)

0 Members and 1 Guest are viewing this topic.

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Vintage Triplett 660-R, and AA Battery question
« on: March 07, 2018, 04:30:55 am »
I picked up this pristine meter in leather case at the thrift store today.  I have checked a few ranges and it seems to work fine. 

Opened it up and is in equally good condition except for some leaking batteries which I cleaned up nicely.

Here is the issue.

Standard AA batteries just barely do not fit!  I recall in the old days, the negative side of AA batteries had an indent which modern ones do not have.  As a result, the newer batteries are ever so slightly longer.

I did find one discussion about this but gave no conclusions.

Question: has anyone else run into this situation for older gear??
 

Offline mzacharias

  • Frequent Contributor
  • **
  • Posts: 477
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #1 on: March 07, 2018, 05:13:24 am »
As I understand it - that should be a 30 volt battery, and not a "AA" cell.
 

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #2 on: March 07, 2018, 05:28:55 am »
As I understand it - that should be a 30 volt battery, and not a "AA" cell.

No, that is the 630-A that uses the 30 volt battery.

The 660 uses two AA and one C
 
The following users thanked this post: mzacharias

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #3 on: March 07, 2018, 06:14:17 am »
Here is a picture from an ebay sale showing the dimple on the bottom of an old 9-lives battery.  It is shown next to a modern battery.

I think that dimple makes the difference for me.

I am  going to design (or find) a AAA to AA converter and print it with my 3D printer, or design a converter that transforms a 3032 to fit in the space of the two series AA batteries.

I need a solution for a C cell that is also required.
 

Offline Cyberdragon

  • Super Contributor
  • ***
  • Posts: 1642
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #4 on: March 07, 2018, 03:44:16 pm »
Why don't you just squish or grind off whatever bump went into that dimple?
*BZZZZZZAAAAAP*
Voltamort strikes again!
Explodingus - someone who frequently causes accidental explosions
 

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #5 on: March 08, 2018, 02:14:55 am »
Why don't you just squish or grind off whatever bump went into that dimple?

That would work, but this unit is in such perfect condition, I wanted to preserve its original state.
 

Offline Stray Electron

  • Frequent Contributor
  • **
  • Posts: 395
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #6 on: March 08, 2018, 03:11:26 am »
  I've noticed that some of the Chinese made AA batteries seem to be shorter than standard American brands.  Short enough that they barely touch the battery contacts.  I guess it's just another way for the Chinese to cut costs.  But go to HF and try some of their batteries. They're certainly cheap enough and they do work well.
 

Offline rsjsouza

  • Super Contributor
  • ***
  • Posts: 2453
  • Country: us
    • Vbe - vídeo blog eletrônico
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #7 on: March 08, 2018, 03:59:50 am »
If you have a Fry's Electronics near you, they have quite reasonably priced ZnC batteries from Tenergy that may fit.



Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 
The following users thanked this post: Wimberleytech

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 4712
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #8 on: March 08, 2018, 01:49:37 pm »
...
Here is the issue.

Standard AA batteries just barely do not fit!  I recall in the old days, the negative side of AA batteries had an indent which modern ones do not have.  As a result, the newer batteries are ever so slightly longer.

...

Question: has anyone else run into this situation for older gear??
Yes I have and like you did not want to modify the meter.  In my case, I suspect the batteries were the original supplied with the meter as well and I wanted to preserve them as well. 



How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 
The following users thanked this post: SeanB

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 4712
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #9 on: March 08, 2018, 01:52:37 pm »
The finished sleeves.   
How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 
The following users thanked this post: SeanB

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 4712
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #10 on: March 08, 2018, 01:59:11 pm »
Here's the old relic after I went over it.   

How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #11 on: March 09, 2018, 02:10:42 am »
Holy cow, that is impressive!  You have finally solved this mystery.  Still amazes me that these batteries were so much shorter.

Your video above did not post properly so I could not view it (unless there is an issue on my end).
 

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 4712
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #12 on: March 09, 2018, 11:53:40 am »
It's just a link to a Youtube video.  I've never heard of playback problems.  Old browser perhaps?

Anyway, thanks and glad you like the end result.  Post some pictures of what you come up with. 
How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #13 on: March 09, 2018, 01:07:07 pm »
Finally watched the video directly on youtube.  Impressive work.

Here is my 3D printed attempt.  I removed copper from a pcb and made the connector for the negative side of the battery.  Not sure how reliable that will be...maybe come up with something different.

Frankly, I will never really use the Triplett...just look at it on the shelf and ponder all the measurements that were made over the years.
 

Offline joeqsmith

  • Super Contributor
  • ***
  • Posts: 4712
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #14 on: March 09, 2018, 02:01:35 pm »
Finally watched the video directly on youtube.  Impressive work.

Here is my 3D printed attempt.  I removed copper from a pcb and made the connector for the negative side of the battery.  Not sure how reliable that will be...maybe come up with something different.

Frankly, I will never really use the Triplett...just look at it on the shelf and ponder all the measurements that were made over the years.

They look really good.  If you have an color printer, you could find some nice vintage battery patterns to wrap around your sleeves and go for that extra bit of nostalgia.   

I am in the same boat.  The only time I would use the meter I showed would be for a comparison video.  It too just sits on a shelf to remind me how far we have progressed.     

I bought an inexpensive analog meter to play around with and tried to get it to survive some of basic tests I put the modern meters through.  I won't be doing anything like this to the vintage one. 



   
   
How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 

Offline Wimberleytech

  • Frequent Contributor
  • **
  • Posts: 356
  • Country: us
Re: Vintage Triplett 660-R, and AA Battery question
« Reply #15 on: March 09, 2018, 02:14:39 pm »
You are brutal!
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf