Just as a voltage amplifier amplifies signal voltage, a power amplifier
A. Amplifies power
B. Amplifies signal current
C. Merely converts the signal ac power into the dc power
D. Merely converts the dc power into useful ac power
Answer:D
Just as a voltage amplifier amplifies signal voltage, a power amplifier
A. Amplifies power B. Amplifies signal current C. Merely converts the signal ac power into the dc power D. Merely converts the dc power into useful ac power