AVO Model 9 Vintage Multimeter Teardown -- The EIectronics Inside 41

element14 Presents | About David | Project Videos | The Electronics Inside

We covered a nice 1980s Digital multimeter, but what happened before that? Well, analog meters! So of course, we should take one to pieces just to see how it all worked!

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dkmmhdk over 3 years ago in reply to a531016 +1

So here I made a little 11 min. video where i show my simple substitution for the 15V battery. And show the meter in operation afterwards. You are absolutely right in your status comment, video editing…

DAB over 3 years ago in reply to dkmmhdk

Nice video.

You have to admit, those old meters were built to last.

DAB
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a531016 over 3 years ago in reply to dkmmhdk

Thanks for sharing, I'll watch as soon as I can!
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dkmmhdk over 3 years ago in reply to a531016

So here I made a little 11 min. video where i show my simple substitution for the 15V battery. And show the meter in operation afterwards.
You are absolutely right in your status comment, video editing can take a long time. (this one I just did wasn't too bad as it is fairly simple)
Here the links:
https://odysee.com/@dkmmhdk:1/AVO-8:a
or
https://youtu.be/MX46-WtRdSM
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a531016 over 3 years ago in reply to dkmmhdk

Great idea! Yes please, share away!
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dkmmhdk over 3 years ago

A few years back I got my hands on a AVO-8. Not in as great an exterior condition as yours but it still seems to measure right.
I solved the problem with the 15V battery by drilling a hole through a piece of wood of a fitting length and putting the right amount of small button cells in to match 15V, and maybe a piece of metal if the number of cells was to small to match the length (I don't remember if it was needed)
If it has any interest I can show what I did.
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a531016 over 3 years ago in reply to DAB

Thanks DAB, It's a beautiful piece of equipment!
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DAB over 3 years ago

Great tear down.

Those old meters were built to last!

DAB
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