#227: Vintage Tech: Fluke 881A Differential Voltmeter Introduction
A brief look at the operation of a 50+ year old piece of vintage test and measurement equipment - the Fluke 881A Differential Voltmeter. Surprisingly, it is still very close to being "in-spec", at least on the one range demonstrated here. It uses a precision 0-11V reference that incorporates a Kelvin_Varley voltage divider. More information about a Kelvin-Varley divider can be found here:
I thought that Dave Jones at EEVBlog did a video on the Kelvin-Varley, but it looks like he did talk about it in this video, bookmarked about about the right spot:
I did however find this video:
I thought that Dave Jones at EEVBlog did a video on the Kelvin-Varley, but it looks like he did talk about it in this video, bookmarked about about the right spot:
I did however find this video:
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