Author Topic: Function Generator Waveforms  (Read 905 times)

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Offline Ground_LoopTopic starter

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Function Generator Waveforms
« on: October 16, 2020, 08:13:02 pm »
Nearly every function generator I've ever seen has at a minimum sine, square, and triangle outputs with various modifications thereof.  I have a need for sine and square fairly often, but not once have I needed triangle where nothing else would do, especially at higher frequencies.  At lower frequency I can see a need for a ramp for timing or level comparison, but that's about it.  Please enlighten me to any other common uses for triangle  waves.
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Online ledtester

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Re: Function Generator Waveforms
« Reply #1 on: October 16, 2020, 08:21:58 pm »
With a triangle wave you can produce a PWM signal where the center of the ON state stays in the same place. This could be useful for certain applications and is called "phase-correct PWM".

 

Offline Ground_LoopTopic starter

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Re: Function Generator Waveforms
« Reply #2 on: October 16, 2020, 08:24:44 pm »
With a triangle wave you can produce a PWM signal where the center of the ON state stays in the same place. This could be useful for certain applications and is called "phase-correct PWM".

Thanks,  I like that one.
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Offline nfmax

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Re: Function Generator Waveforms
« Reply #3 on: October 16, 2020, 08:27:16 pm »
Providing input to characterise a circuit with a non-linear response, such as an optocoupler. Use a scope in X/Y mode, with the X axis showing the input voltage (the triangle wave) and the Y axis the output.
 

Offline bob91343

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Re: Function Generator Waveforms
« Reply #4 on: October 16, 2020, 08:31:43 pm »
I use a triangle wave to create a sweep generator by using it to frequency modulate my signal generator.
 

Offline TimFox

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Re: Function Generator Waveforms
« Reply #5 on: October 16, 2020, 09:11:29 pm »
The traditional analog function generator starts with a triangle wave, then derives the square and sine waves from the triangle.  A good analog generator can easily vary the symmetry of the original triangle wave to generate a ramp or non-square pulse waveform.
 

Offline S. Petrukhin

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Re: Function Generator Waveforms
« Reply #6 on: October 17, 2020, 12:06:16 am »
Using a triangular wave allows you to check threshold elements.
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