- An electronic device that generates sinusoidal oscillations of desired frequency is known as a
sinusoidal oscillator.
- Oscillations are produced without any external signal source. The only input power to an oscillator is the d.c. power supply.
- Although we speak of an oscillator as ?generating? a frequency, it should be noted that it does not create energy, but merely acts as an energy converter. It receives d.c. energy and changes it into a.c. energy of desired frequency. The frequency of oscillations depends upon the constants of the device.
- Although an alternator produces sinusoidal oscillations of 50Hz, it cannot be called an oscillator. Firstly, an alternator is a mechanical device having rotating parts whereas an oscillator is a non-rotating electronic device.
- Secondly, an alternator converts mechanical energy into a.c. energy while an oscillator converts d.c. energy into a.c. energy.
- Thirdly, an alternator cannot produce high frequency oscillations whereas an oscillator can produce oscillations ranging from a few Hz to several MHz.
Wilfykil answered the question on August 15, 2019 at 08:55
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