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Let's see if anyone can figure this out

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  • Let's see if anyone can figure this out

    First off please assume we are measuring direct current. The meter is a panel meter and not a VOM or bench top meter. You do have full access to the meter and there's loads of room to add gadgets behind the panel it is mounted on. Let's see if anyone can answer both questions correctly.

    Problem: You have a DC Ammeter with a range of 0-1 Ampere. You need to measure about 7 Amperes of current to check something.

    Question 1: What item(s) do you need to make your 0-1 Ampere read 0-10 Amperes?

    Question 2: What information would you need about the meter before you could start making the special item or items?

    Later on if anyone gets this first part correct, I'll post info about the meter and see if anyone can figure out the value for the item needed to make it read 0-10 Amperes.
    Last edited by Woussko; 08-11-2008, 02:45 AM.

  • #2
    Re: Let's see if anyone can figure this out

    You need a shunt divide the measured current. You need to know the meters resistance.

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    • #3
      Re: Let's see if anyone can figure this out

      Newman

      Correct and it would also be good to know what Voltage is required for full scale on the meter. Yes to using a shunt.

      Hint: The meter might already have a shunt and some resisters in series with the built in shunt or the meter itself.

      It's your turn to ask the question now. Try one to make this old howling hound have to think. Let's see if I can do that anymore. LOL
      Last edited by Woussko; 08-11-2008, 07:18 AM.

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