Author Topic: Fun projects  (Read 1010 times)

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Offline jose347Topic starter

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Fun projects
« on: July 05, 2019, 04:14:26 pm »
So you own a power supply, an oscilloscope and a function generator. Whats next?
what are you suggestion for fun and simple projects to start the ball rolling?
 

Offline jose347Topic starter

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Re: Fun projects
« Reply #1 on: July 05, 2019, 04:28:47 pm »
I'll start for the shy people, I think an oscillator is a cool and simple project to make, making an AC signal out of DC and be able to look at it from the oscilloscope is gratifying.
 

Online ledtester

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Re: Fun projects
« Reply #2 on: July 05, 2019, 05:08:58 pm »
Measure the resonant frequency and quality of a LC-tank circuit using the ring-down method:

http://www.giangrandi.ch/electronics/ringdownq/ringdownq.shtml

And's here's a video:

« Last Edit: July 05, 2019, 05:11:11 pm by ledtester »
 

Offline bob91343

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Re: Fun projects
« Reply #3 on: July 05, 2019, 05:24:51 pm »
If your generator is stable enough and can be micro-adjusted in frequency, you might try to find resonant frequency of a crystal.  I did that with a rather large batch of crystals and was disappointed in how inaccurately they were marked.

A crystal has two resonances, you hope, and they are very close in frequency.  One is parallel and is sensitive to circuit loading.  The other is series and is probably a better check.

Many of the crystals I tested had multiple resonances, some dangerously close to marked frequency.  They are probably products of sloppy manufacturing but since I never manufactured one I don't really know.
 


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