The RC circuit

RE: The RC circuit

rscasny — Wed, 27 Apr 2016 20:15:09 GMT

Giovanni,

A great getting-back-to-basics lesson with an Arduino twist, so to speak.

You did this one on RC circuits. Do you have plans or interest in doing a project on LR circuits, or another version, an LC /tank circuit?

Randy Scasny

element14

RE: The RC circuit

kas.lewis — Tue, 26 Apr 2016 17:30:37 GMT

Pretty cool teaching tool, [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-24e0a2e2-103f-420d-9de1-e7318c2e7476/8345.contentimage_5F00_1.png:16:16] thanks for sharing

RE: The RC circuit

Former Member — Mon, 25 Apr 2016 08:47:59 GMT

This will work for non-electrolytic capacitors, but the leakage of some electrolytic capacitors will give a very inaccurate result.

RE: The RC circuit

dougw — Wed, 06 Apr 2016 03:09:12 GMT

Nicely done. There is enough data to get a pretty precise value for the capacitor, assuming you can measure the resistor accurately.

RE: The RC circuit

D_Hersey — Sun, 03 Apr 2016 18:21:05 GMT

Instead of an exponential curve, you would get a linear ramp, the slope of which would be proportional to the value of the current source.

RE: The RC circuit

clem57 — Sat, 05 Mar 2016 11:28:44 GMT

A thoughtful and informative way of studying electrical circuit that is simple.Outstanding work.

Clem

RE: The RC circuit

diablero — Sat, 05 Mar 2016 06:19:10 GMT

Very nice post! [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-24e0a2e2-103f-420d-9de1-e7318c2e7476/contentimage_5F00_1.png:16:16]

RE: The RC circuit

D_Hersey — Fri, 04 Mar 2016 21:48:10 GMT

A current source instead of a resistor would make for an interesting contrast.

RE: The RC circuit

neilk — Fri, 04 Mar 2016 21:47:23 GMT

Nice post, Giovanni.

Great to see a really useful teaching method beautifully presented and explained

Neil

RE: The RC circuit

jw0752 — Fri, 04 Mar 2016 21:24:12 GMT

Hi Giovanni,

I really like to see this type of presentation on the Forum. It reminds me of just how much fun one can have exploring electronics. It combines theory, the use of an MPU, and a basic electronic circuit. I hope you keep these experiments coming.

John

RE: The RC circuit

D_Hersey — Fri, 04 Mar 2016 20:49:28 GMT

If you google 'capacitance multiplier' you will find circuits that use an op-amp to make a capacitor (that has one side attached to the supply) look bigger. You can easily get, say, a 10^4 apparent increase with a garden-variety op-amp.

Yeah, nice post!

RE: The RC circuit

DAB — Fri, 04 Mar 2016 19:06:00 GMT

Nice post.

Takes me back to my Tech school days when we went through RC circuits and plotted them by hand.

I hope the newbies reading this post take a good look at the actions of just simple components, because they can have a lot of interesting application as you build more complex circuits.

DAB