PCB a Week 9: MrRef voltage and current reference

in PCBs by DP | 1 comment

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. :-)

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Comments

  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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