Page 42 - Semester-IV-Electronics

 The charged condenser C discharges through the inductor L so that

the current in the inductor increases with time. Thus, the electrical

energy stored in the condenser is converted into magnetic energy

produced by inductor.

 The change in magnetic flux linked with inductance coil induces an

emf in it in accordance with Faraday and Lenz’s law. This emf

changes the condenser in the opposite direction.

 The charged condenser again gets discharged through the inductance

coil and the induced emf charges the condenser.

 If there is no loss of energy, this oscillatory process goes on

continuously.

 Due to the presence of resistance in the circuit or loss of energy by

radiation at high frequencies, the amplitude of oscillations decreases

with time, means that the oscillations are damped (Figure 2).

 If energy can be supplied to the circuit at the same rate at which it is

dissipated, then the oscillations will remain maintained and

amplitude of oscillations will remain constant. 42