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Old 25th May 2017, 6:02 pm   #26
MrBungle
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Join Date: Jun 2016
Location: London, UK.
Posts: 3,687
Default Re: VTVM / Valve Voltmeter articles from magazines in the UK

Just a heads up if you buy a Chinese cheap meter. Check out the damping, or lack of!

https://youtu.be/fAIMRgiSMIk

This is driven from a 50uA current source.
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