# Decibel Gain & Linear Gain

#### billy1492

Joined Mar 27, 2012
2
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?

#### wmodavis

Joined Oct 23, 2010
739
45
177.827941

#### bountyhunter

Joined Sep 7, 2009
2,512
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)