Op-amp oscillator circuit - square, triangle, sine waveforms

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SUMMARY

The discussion focuses on constructing an oscillating circuit capable of generating square, triangle, and sine waveforms using high-speed operational amplifiers (op-amps) and standard components such as resistors and capacitors. Participants recommend consulting documentation from semiconductor manufacturers like National Semiconductor, specifically referencing Linear Brief 23 for triangle wave outputs. The importance of understanding the relationship between current sources and capacitors in generating linear ramp voltages is also highlighted as a foundational concept for creating these waveforms.

PREREQUISITES
  • High-speed operational amplifiers (op-amps)
  • Basic circuit design principles
  • Understanding of waveform generation
  • Knowledge of current sources and capacitors
NEXT STEPS
  • Research the use of National Semiconductor's Linear Brief 23 for triangle wave generation
  • Explore techniques for generating square waveforms using op-amps
  • Study the principles of waveform shaping in oscillator circuits
  • Investigate the effects of varying frequency in op-amp circuits
USEFUL FOR

Electronics enthusiasts, circuit designers, and students working on waveform generation projects using operational amplifiers.

louie
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Does anyone know of any good oscillating circuits that are able to produce square, triangle, and sine waveforms (or any combination of these waveforms). The circuit that I'm constructing has to vary in frequency and is limited to using high-speed op-amps and other general components (resistors, caps, etc. - no special IC's).

Thanks in advance
 
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Wein Bridge

Search a semiconductor manufacturer like national for the triangle wave outputs, they'll have documentation on using op amps to get it like Linear Brief 23.

I'll let you figure out the square. :)

Cliff
 
This sounds suspicously like a school assignment. Just remember that a current souce feeding a capacitor causes a linear ramp voltage to form across the cap. Figure it out from there.
 

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