Power Ratio (PR) in dB ( ) Astereo amplifier takes the output of a CD player, for

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Power Ratio (PR) in dB ( )

Astereo amplifier takes the output of a CD player, for example, and increases the power to an audible level. Suppose the output of the CD player is 50mWand the desired audible output is 100 W per stereo channel, find the power ratio of the amplifier per channel in decibels (dB), where the power ratio in dB is PRdB ¼ 10 Log10

ðp2=p1

Þ:

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