How to Convert Milliwatts to Millivolts

Written by brian baer
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How to Convert Milliwatts to Millivolts
Milliwatts are the product of milliamps and millivolts. (Photos.com/Photos.com/Getty Images)

The watt is a unit of power named after the Scottish engineer James Watt. It measures the rate of power conversion and can be calculated by the product of volts and amps: watts = volts x amps. A milliwatt is 1/1000 of a watt, and a millivolt is 1/1000 of a volt. To convert milliwatts to millivolts, you have to know the amps involved in the circuit. An amp is a measure of the amount of electrical charge being passed through a circuit.

Skill level:
Moderate

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Things you need

  • Pen
  • Paper
  • Calculator

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Instructions

  1. 1

    Determine the value of amps in a circuit. Assume that a small electronic device can pull 75 milliamps of current. Write the number down.

  2. 2

    Determine the value of wattage in the circuit. For example, there are 200 milliwatts available for the electronic device. Write the number down.

  3. 3

    Calculate the millivolt value using the following formula: millivolts = milliamps / milliwatts. For this example, the answer is 75 milliamps / 200 milliwatts, or 0.375 millivolts.

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