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Bipolar and unipolar voltages and their significance

  1. Oct 1, 2014 #1
    Hello all!

    I'd like to clarify on the the differences of bipolar and unipolar voltages. I do understand that they both are used to trigger a number of semiconductor devices.

    Please and thank you!!
  2. jcsd
  3. Oct 1, 2014 #2


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    Science Advisor

    Probably unipolar voltages are a single voltage referenced to zero volt as ground. Most logic gate power supplies and signals are unipolar.

    Bipolar has a positive and a negative voltage referenced to zero volts. There was a time when analogue electronics using op-amps which needed both a (+)ve and (–)ve supplies. The signals were relative to zero volts. Now, rail-to-rail op-amps will run on low voltage unipolar supplies.
  4. Oct 5, 2014 #3
    Thank you very much, @Baluncore!
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