Electronics > Beginners

Real World Use Of A Function Generator

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basinstreetdesign:

--- Quote from: bsudbrink on February 05, 2019, 08:18:03 pm ---
--- Quote from: The_Welding_Library_Guy on February 05, 2019, 07:45:43 pm ---But other then helping you learn how to use your scope with a controlled signal. Is there any other real world use for one?

--- End quote ---
Absolutely.  You use it to put complicated looking Lissajous patterns on your scope to impress visitors/your spouse.

--- End quote ---
:-+
I don't have one.  Just a pulse generator which gets seldom use.  Every project I have done has relied on itself to generate all necessary signals starting from the wall socket and downstream from there.  Wait a minute - I just made an audio oscillator of high purity to test possible audio projects, so there's that.

JonPyro:
I am always finding uses for my generator. Just today I wanted to quickly do some motor control work and used it to generate a PWM. Saved a lot of time having to get a micro out and program it etc.

bob91343:
Perhaps a more interesting question might be 'real world use of two function generators'.

I was bemoaning the fact that I have three function generators but wish I had an arbitrary waveform generator.  But perhaps I can combine two of my function generators to create one.

I recall back in the early 1960s I worked for a company that made a function generator.  It was housed in perhaps two or three six foot racks, all tubes of course, with many 10 turn potentionmeters to set various points on the desired waveform.

I never used or worked on this device but found it fascinating.

I do believe that with use of some of the rear panel auxiliary inputs I can make a staircase wave or something like it.  Any ideas?  I haven't given this much thought yet so maybe I can answer my own question.

Wimberleytech:

--- Quote from: Wimberleytech on February 07, 2019, 01:21:55 pm ---

--- Quote ---...
What you get for around EUR 60 is amazing, but in this price range it's got some limits.
The power supply adapter is garbage. Throw it away and use a decent adapter, or put a simple block transformer + LM7805 in the thing itself. Plenty of room.
On low amplitude it gets a bit noisy. The signal is generated by a 12-bit ladder DAC on the output of an FPGA.
...

--- End quote ---

You have damn near convinced me that I should have one on my bench!!

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...and I did!  A Siglent

soldar:

--- Quote from: bob91343 on April 26, 2019, 04:48:27 pm --- wish I had an arbitrary waveform generator.  But perhaps I can combine two of my function generators to create one.
--- End quote ---


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