In audio and communications systems, the gain, B, in deci- bels is defined for an amplifier as Pout B = 10log Pin where Pin is the power input to the system and Pout is the power output. (a) A particular amplifier puts out 135 W of power for an input of 1.0 mW. What is its gain in dB? (b) If a signal-to-noise ratio of 93 dB is specified, what is the noise power if the output signal is 10 W?

Q: The speech quality for a particular mobile communication system is just acceptable when the received…

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Q: For the amplifier determine the V out and V f

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Q: difference amplifier circuit

A: