Electrical Engineering/voltameter

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Question
what is the history of voltage devices


Answer
Your question is very broad.  What do you mean when you say voltage "devices"?  There are many.  Are you just talking about voltmeters?  or Ammeters?  or both?

I had a similar question a few years ago. Maybe this will help you get started.

http://en.allexperts.com/q/Electrical-Engineering-1356/history-electrical-meters...

But I also encourage you to do some googling on your own for the specific area of interest that you have.

Then, let me know if you need more suggestions.  

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cleggsan

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All technical areas of Electronics Engineering.

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BSEE, MBA, Design, R&D, University Research.
Senior Life Member of IEEE. Life Fellow of AES.

Organizations
IEEE, Consumer Electronics Society, Audio Engineering Society.
Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.

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BSEE (Equiv) BYU BSEE University of North Dakota MSBA (MBA) Illinois State University Graduate Studies in Computer Science - Bradley University Graduate Studies - Ohio University Graduate Studies - University of Missouri Kansas City DeVry Tech - Electronics

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