LC oscillations

What is the literal meaning of oscillation is the first question arises and answer to this is oscillation or oscillators are electronic circuits that generate a continue periodic waveform at a precise frequency another explanation is that oscillation can convert a DC into an AC output or can be called waveform which can have a wide range of different wave shapes and frequencies. On the other hand, oscillation can also be used in many pieces of test equipment which produces either sinusoidal sine waves. LC oscillation is commonly used in radio frequency circuits because they are good in phase noise characteristics. In simple words oscillator or oscillation is an amplifier with positive feedback and they work because they overcome the losses of their feedback resonator circuit or it can be said that it is an amplifier which uses positive feedback that generates an output frequency without using input.

Types of oscillation circuit and it’s resonance.

These are the circuit which generates a continuous voltage output waveform at a required frequency consisting of the values of capacitance, inductance, and resistor. There are two type of oscillation namely sinusoidal oscillation and non- sinusoidal oscillation. First is Sinusoidal oscillation which are also known as harmonic oscillation and generally they are LC turned feedback and also RC turned feedback there kind of oscillators generally generates a pure sinusoidal waveform whereas non-sinusoidal also known as relaxation oscillator or oscillation which generates non- sinusoidal waveforms that changes very quickly from one condition of stability to another which are also known as square wave, triangular wave type of waveforms. Resonance of oscillation is when a constant voltage of varying frequency is applied to a circuit consisting of an insulator, capacitor, and resistor. It is assumed that at higher frequencies the reactance of a capacitor is very low acting just like a short circuit and the reactance of the inductor is high and acts as an open circuit.

How can LC oscillation is summarized?

The basic condition required to summarize the LC oscillation is to exit an oscillator circuit which must contain a reactive component such as capacitor and resistor or else in a simple inductor-capacitor it becomes damped over time due to component and circuit losses. There is voltage amplification is required to overcome these circuit losses and prove them positive again and the overall gain of the amplifier must be greater than a unity which is possible in every LC oscillation.


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