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I need output meters

A project log for Mains protection box

Work more safely with mains power

Yann Guidon / YGDESYann Guidon / YGDES 04/17/2019 at 22:020 Comments

I need to add a voltmeter and amperemeter to the output of the box.

The autotransformer has a small needle display for the output voltage but it's not very precise, and I'd use a current display as well but I am not sure what sort/model would be best.

I know there are ready-made modules but they feel underwhelming, a little accuracy and precision would be more than welcome...

I don't want to tear up a multimeter as I did with the #Precision current generator 

Powering the device(s) is another significant detail to keep in mind, as I don't want to worry about dead batteries, or measurement inaccuracies when the power comes from the mains itself.

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