In a transistor

Explanation

(i) An oscillator basically converts dc energy into ac energy of high frequency ranging from a few Hz to several MHz. There are two types of oscillators:
(a) Sinusoidal
(b) Non- sinusoidal.
(iii) Sinusoidal oscillator generate oscillations in the form of sine wave at constant amplitude and frequency.
(iv) Non- sinusoidal oscillator generate complex none - sinusoidal waveform like square wave , Triangular- wave or Sawtooth - wave.
(v) Sinusoidal oscillations can be of two types:
(a) Damped.
(b) undamped.
(vi) If the amplitude of the electrical oscillations decreases with time due to energy loss, is called damped oscillation.
(vii) The amplitude of the electrical oscillations remains constant with time in undamped oscillations.