Author Topic: Playing With The Analog Discovery  (Read 1421 times)

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Offline rstoferTopic starter

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Playing With The Analog Discovery
« on: October 01, 2016, 05:53:05 pm »
I often recommend the Digilent Analog Discovery to newcomers.  It provides a ton of capability in a reasonably priced piece of equipment.

My grandson is taking Pre-Calculus and the current topic is trigonometric functions.  As a side issue, we're talking about differential and integral calculus at a beginning level.  I cooked up a project to tie all of it together by using my analog computer to generate sin(t) and cos(t).  This is pretty easy with 2 op amp integrators and an op amp inverter.  Once you generate the functions, you can plug them into an X-Y scope and see the resulting circle.  Plug sin(t) into the Y axis and cos(t) into the X axis.  Along the way I decided to display the results with the Analog Discovery because it can handle waveforms that repeat at 6.28 (2 PI) seconds.  The X-Y on the DS1054Z is pretty nice but I can't get enough persistence to see the closed form of the circle.  Probably user error...

Anyway, I have attached a screen shot of the time domain and X-Y graphs on the same screen.  Yes, the time domain is a little scrunched because I wanted the circle to display as 'round' but I can deal with it.

See attached screenshot.  Yes, I really like the Analog Discovery!

« Last Edit: October 01, 2016, 06:21:25 pm by rstofer »
 


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