What is Colpitts oscillator circuit?
Oscillator is an amplifier with the positive feedback and it converts DC input signal into AC output waveform with certain variable frequency drive and certain shape of output waveform (like sine wave or square wave, etc) by using the positive feedback instead of input signal.
How many indicators are there in the tank circuit of Colpitts oscillator?
Solution: There are one inductor in the tank circuit of Colpitts oscillator and it is given for oscillation.
How does Hartley oscillator work?
Definition: Hartley oscillator is a type of LC oscillator that generates undamped sinusoidal oscillations whose tank circuit consists of 2 inductors and a capacitor. In the tank circuit, the two inductive coils are serially connected together forming a parallel combination with the capacitor.
What are the disadvantages of Colpitts oscillator?
Disadvantages :
- Because of inductor L circuit becomes bulky and cost of circuit is more.
- Poor frequency stability.
- Difficult to adjust feedback as capacitor values has to be changed.
- Poor Isolation (Load impedance v/s frequency).
- Hard to design.
What is the other name of Colpitts oscillator?
A Colpitts oscillator, invented in 1920 by American engineer Edwin H. Colpitts, is a device that generates oscillatory output (sinusoidal). It consists of an amplifier linked to an oscillatory circuit, also called LC circuit or tank circuit.
What is the use of tank circuit?
The most common application of tank circuits is tuning radio transmitters and receivers. For example, when tuning a radio to a particular station, the LC circuits are set at resonance for that particular carrier frequency. A series resonant circuit provides voltage magnification.
What is the principle of the oscillator?
There are many types of electronic oscillators, but they all operate according to the same basic principle: an oscillator always employs a sensitive amplifier whose output is fed back to the input in phase. Thus, the signal regenerates and sustains itself. This is known as positive feedback.
What is the main function of Hartley oscillator?
Hartley Oscillator is a device that generates oscillatory output (sinusoidal). It consists of an amplifier linked to an oscillatory circuit, also called LC circuit or tank circuit. The function of tank circuit is to tune a certain frequency. LC oscillators are designed to operate in the radio-frequency range.
Which is better Hartley or Colpitts oscillator?
Main advantage of Colpitts oscillator over Hartley oscillator is the improved performance in the high frequency region. This is because the capacitors provide a low reactance path for the high frequency signals and thus the output signals in the high frequency domain will be more sinusoidal.