Hello, And my first question about current.

Discussion in 'General Electronics Chat' started by Rbelec, Sep 28, 2016.

  1. Rbelec

    Thread Starter New Member

    Sep 28, 2016
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    Hi Everyone, I'm a new student in electronics. I just purchased a power supply and I'm learning how to use it.

    I found that when I adjust the current knob on the power supply, I get a 0 reading on the screen. When I connect a multimeter, I am able to get a current reading from 0-3 A, as it should be according to the spec on the power supply.. It seems to complete the circuit when I connect the meter. Then I created a simple circuit with 2 resistors and some wire. I found that as I connected the meter in various places, I would get a reading of .01A on the meter and a 0 with a blinking minus sign on the power supply, no matter what I did with the current knob.. What is happening here?
    -Ryan
     
  2. nsaspook

    AAC Fanatic!

    Aug 27, 2009
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  3. Rbelec

    Thread Starter New Member

    Sep 28, 2016
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    I think I figured it out. Not enough current is being supplied for the meter reading. Lets try upping the voltage..Yep, that was it!
     
  4. twiese86

    New Member

    Sep 29, 2016
    3
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    Think of current like the flow of water through a pipe, except instead of water, you're flowing electrons. Voltage can be equated through pressure that the water exerts on the ID of the pipe(although this is a slight oversimplification). Without the meter connected, there is no pipe, therefore no current flow. Which is why your indicator is zero.
     
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