Classification of oscillators:
Based on the output waveform:
The oscillators are classified as:
- Sinusoidal oscillator
- Non-sinusoidal oscillator
Based ON the circuit components:
- RC oscillators
- LC oscillators
- Crystal oscillates
Based on the range of operating frequency:
- Low-frequency oscillators (20 Hz to 100-200 KHz) also called as audio frequency oscillates.
- High-frequency oscillator (200 kHz – 300 to gigahertz) also called as ratio frequency oscillators.
Based on whether the feedback is used or not:
- Feedback oscillator
- Non –feedback oscillator
- In this oscillator use the negative resistance region on the characteristics of the device
e.g. UJT relaxation oscillator.