Question
Download Solution PDFIn simple oscillators, _______ are used.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFOscillators
An oscillator is a circuit that produces a continuous, repeated, alternating waveform without any input.
Oscillators basically convert unidirectional current flow from a DC source into an alternating waveform.
In simple oscillators, UJTs are used.
UJT Relaxation Oscillator is used as a pulse generator when the voltage across the discharge resistor is used.
Oscillators work on positive feedback and follow Bark hausen's criteria.
The Barkhausen stability criterion is a mathematical condition to determine when a linear electronic circuit will oscillate or not. It will oscillate when:
- The loop gain must be unity.
- The phase shift through the loop is either zero or an integer multiple of 2π.
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