A) an oscillator
B) an amplifier
C) a rectifier
D) none of these
Correct Answer: A
Solution :
The oscillator may be defined as a circuit which generates an AC output signal without any externally input signal or a circuit which generates DC energy into AC energy at very high frequency. Amplifier is a device which increases the amplitude of the input signal. Rectifier is a circuit which converts AC to unidirectional pulsating output. In other words, it converts AC to DC.
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