Decibel Gain & Linear Gain

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Discussion in 'Homework Help' started by billy1492, Mar 27, 2012.

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  1. Mar 27, 2012 #1
    billy1492

    Thread Starter New Member

    Mar 27, 2012
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    Each of three cascaded amplifiers has a decibel voltage gain of 15. What is the overall decibel voltage gain? What is the overall linear voltage gain?
     
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  2. Mar 27, 2012 #2
    wmodavis

    Well-Known Member

    Oct 23, 2010
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  3. Mar 27, 2012 #3
    bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    510
    dB gains do add. To get the linear gain you use this:

    AVdB = 20 log (V1/V2)

    To get the linear part back, divide by 20 and then take 10(exp X)
     
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