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Null Meter

Analog Null Meter/Differential Voltmeter

steve-tonerSteve Toner
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  • steve-tonerSteve Toner

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This project was created on 05/14/2021 and last updated 5 years ago.

Description

A proper analog null meter measuring down to 10 μV full scale.

Files

Schematic.pdf

Adobe Portable Document Format - 34.53 kB - 02/09/2023 at 01:59

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  • Null Meter Prototype

    Steve Toner • 05/14/2021 at 00:35 • 0 comments

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David Mason wrote 02/06/2023 at 21:48 • point

Steve, I just found your null Meter project.  I've started my own version of Conrad Hoffman's project, but I like yours a bit better because of the additional ranges and the differental meter function.  Would you share the project files, especially the PCB files.  I use Diptrace primarily, but also use Eagle.

  Are you sure? yes | no

Steve Toner wrote 02/09/2023 at 02:39 • point

I've uploaded a PDF of the schematic - as built.  As noted in the video, an additional resistor would be required for best accuracy on the 1V range, but that is not shown here.

I used ExpressPCB for this, so I don't think the PCB files would do you any good as they are in a proprietary format.

  Are you sure? yes | no

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