What's the Amp resolution on your P.S.?

Discussion in 'General Electronics Chat' started by strantor, Feb 27, 2014.

What's your resolution?

  1. 1A

    0 vote(s)
    0.0%
  2. 100mA

    0 vote(s)
    0.0%
  3. 10mA

    33.3%
  4. 1mA

    0 vote(s)
    0.0%
  5. .1mA or lower

    0 vote(s)
    0.0%
  6. Analog

    66.7%
Multiple votes are allowed.
  1. strantor

    Thread Starter AAC Fanatic!

    Oct 3, 2010
    4,302
    1,988
    Benchtop variable power suppy. Most I'm seeing have 10mA resolution. The ones I see with 1mA resolution are expensive. I cannot find any at all that have .1mA resolution.
     
  2. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Never confuse resolution for accuracy. Digital panel meters often have resolution that is orders of magnitudes tighter than the actual accuracy of the measurement circuit inside. Current is measured by the V drop across a resistor and getting precsion power resistors can be difficult and very hard to find better than 0.1%.
     
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