Oscillators are one of the very important aspect of all the elctronics equipmets present these days.
When it comes to oscillators there are many kins of its own. The very common oscillator we can find is inside the clock which is a quartz crystal which controls the clock.
the other main thing we need to discuss about is the tank circuit, and u can find it in basically all types of radios.
A tank circuit consists of an coil and an capacitor connected
Actually how it works is when the capacitor charges and discharges through the coil it stats to build a magnetic field. there will be the maximum field
built when the capacitor is fully discharged.
now when the capacitor starts discharging the magnetic field which is buit prevoiusly will start to decrease till the capacitor is fully charged. u can see in the figure below
so again when th capacitor is charged the magnetic field is built but now in the opposite direction. this produces the positive and negative oscillations in the tank circuit which further results in a
oscillated output wave.
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