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What is a Relaxation Oscilloscope?

Relaxation oscillators: Generate square/triangular waves via capacitor/inductor charge-discharge cycles. Used in signal generators, thyristor circuits & TV receivers with op-amp/UJT designs.

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What is a Relaxation Oscilloscope?


Relaxation Oscillator Definition


A relaxation oscillator is defined as a non-linear electronic circuit that generates non-sinusoidal repetitive signals, such as square and triangular waves.


 

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Components and Function


It utilizes non-linear elements and energy-storing components like capacitors and inductors, which charge and discharge to create oscillations.


 

Working Principle


The operation is based on the continuous charging and discharging of an energy-storing component, determining the waveform and frequency of the output.


 


Circuit Varieties


Op-Amp relaxation oscillators




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UJT relaxation oscillators



 

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Practical Applications


  • Voltage control oscillator

  • Memory circuits

  • Signal generator (to generate clock signals)

  • Stroboscopes

  • Firing thyristor-based circuit

  • Multi-vibrators

  • Television receivers

  • Counters


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