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PCB a Week 9: MrRef voltage and current reference

Posted on Wednesday, February 20th, 2013 in PCBs by DP

MrRef-Top-1

Mats continues his challenge of designing one PCB every week. This tool helps check the accuracy of your multimeter:

The design might be interesting anyways since it has remote sensing for compensating for voltage drop in the cables. But if your meter is drawing enough current to cause more than a 1 mV drop you might what to change your meter anyways. :-)

This entry was posted on Wednesday, February 20th, 2013 at 3:00 pm and is filed under PCBs. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “PCB a Week 9: MrRef voltage and current reference”

  1. KH says:

    I’ve done something similar, but dual-voltage, ADR3412 (1.200V, 0.1percent prec) + ADR431 (2.500, 0.04percent prec). Turns out the accuracy of cheapo multimeters are not too bad…

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