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How does Oscillator work?

Electronic oscillators are used in a wide range of applications.   They are used in laptop and smartphone processors for generating clock signals. While they are used in radio and mobile receivers for generating the local carrier frequency.

what is oscillator

So, this oscillator accepts the DC voltage and generates the periodic AC signal of the desired frequency. Now, the oscillators can generate frequencies from a few Hz to even GHz. Now, the output of the oscillator can be either a sinusoidal signal or non-sinusoidal signals like a square wave and the triangular wave.

How does Oscillator work?

In simple terms, this oscillator circuit is nothing but the amplifier which is given positive feedback. So, let's understand the working principle of this oscillator.

So, let's say some input sinusoidal signal is applied to this amplifier. So, at the output, the input signal will get multiplied by the gain of this amplifier. And the output signal will be equal to A times the input signal.

Different Types of Oscillator

So, depending on the type of feedback circuit, the oscillator can be classified as either RC, LC, or crystal oscillator. And moreover that depending on the arrangement of these components, these can be classified further. Now, the oscillators which are mentioned here are the sinusoidal oscillators. Or even it is known as the harmonic oscillators.