Omp Amp Non-Inverting Question

Discussion in 'General Electronics Chat' started by crazyengineer, Jan 4, 2011.

  1. crazyengineer

    Thread Starter Member

    Dec 29, 2010
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    Maybe I'm still remembering what I learned from physics which "the energy you get equals the energy you put in." But I was looking at basic examples of non inverting omp amp examples but can it really amplify the current or voltage you put in? Is it really the case?

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  2. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    Actually there is always a loss, it's called entropy. Anyway you can never get more energy out than you put in.

    An OpAMP uses external power to multiply an incoming voltage. It's called Gain. 1:1 is Unity Gain.
     
  3. crazyengineer

    Thread Starter Member

    Dec 29, 2010
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    So let say I plugged an omp amp into a 5v supply, and I set up a non inverting circuit with a voltage gain of 10 and the input voltage is 1.5 volts then the output voltage will not be 15v?
     
  4. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    At 10x gain yes, the output will be 10x the input voltage. BUT you need a power supply greater than the output voltage to run the OpAmp. Else output will "clip" at the rail voltage or below.
     
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  5. crazyengineer

    Thread Starter Member

    Dec 29, 2010
    156
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    cool thank you!
     
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