1977 AVOmeter Digital Multimeter Teardown -- The EIectronics Inside 28

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

Most people are fairly familiar with multimeters, or DMMs. But what did its grandparents look like? I have got hold of a 1977 multimeter, so lets see what's inside!

Top Comments

michaelkellett over 4 years ago +2

The ceramic board with the "antenna" like traces will almost certainly be the current sense resistors. (Or current shunts as people sometimes call them.) MK
DAB over 4 years ago +1

Another great teardown. DAB
a531016 over 4 years ago in reply to DAB +1

Thank you! I'm glad you enjoyed it! I loved this device as it was, but having seen it in pieces, it's a work of art!

a531016 over 4 years ago in reply to KalebTheMaker

Thanks Kaleb, I definately have an interest in anything older. It seems like today you could do anything with an MCU.

If you have any suggestions, I'm always looking!
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KalebTheMaker over 4 years ago

Nice teardown David, Always interesting with the old gear!

-Kaleb
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a531016 over 4 years ago in reply to michaelkellett

Excellent! Thank you for that!
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DAB over 4 years ago in reply to a531016

Agreed, looking back at all of the older gear I used to use, they look like tanks compared to the newer use and toss devices.

DAB
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michaelkellett over 4 years ago

The ceramic board with the "antenna" like traces will almost certainly be the current sense resistors. (Or current shunts as people sometimes call them.)

MK
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a531016 over 4 years ago in reply to DAB

Thank you! I'm glad you enjoyed it!

I loved this device as it was, but having seen it in pieces, it's a work of art!
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DAB over 4 years ago

Another great teardown.

DAB
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