= LC circuit
{c}
{wiki}
When <Ciro Santilli> was studying electronics at the <University of São Paulo>, the courses, which were heavily inspired from the <USA> 50's were obsessed by this one! Thinking about it, it is kind of a cool thing though.
That https://en.wikipedia.org/w/index.php?title=LC_circuit&oldid=1085148789[Wikipedia page] is the epitome of <it is not possible to teach natural sciences on Wikipedia>[Wikipedia failure to explain things in a way that is of any interest to any learner]. <video Tutorial on LC resonant circuits by w2aew (2012)> is the opposite.
\Video[https://www.youtube.com/watch?v=hqhV50852jA]
{title=Tutorial on LC resonant circuits by w2aew (2012)}
{description=
* https://youtu.be/hqhV50852jA?t=239 <series LC circuit> on a <breadboard> driven by an <AC source>. Shows behaviour on <oscilloscope> as source frequency is modified. We clearly see voltage going to zero at resonance. This is why thie circuit can be seen as a <filter (signal processing)>.
* https://youtu.be/hqhV50852jA?t=489 shows the <parallel LC circuit>. We clearly see current reaching a maximum on resonance.
}
\Video[https://www.youtube.com/watch?v=XSUiCeCHAvw]
{title=LC circuit dampened oscillations on an oscilloscope by Queuerious Guy (2014)}
{description=Finally a video that shows the oscillations without a driving <AC source>. The dude just move wires around on his <breadboard> manually, first charging the <capacitor> and then closing the LC circuit, and is able to see damped oscillations on the <oscilloscope>.}
\Video[https://www.youtube.com/watch?v=W31CCN_ZF34]
{title=Introduction to LC Oscillators by <USAF> (1974)}
{description=
* https://youtu.be/W31CCN_ZF34?t=740 mentions that <LC circuit> formation is the root cause for <Audio feedback> with a quick demo. Not very scientific, but cool.
}
\Video[https://www.youtube.com/watch?v=Mq-PF1vo9QA]
{title=<LC circuit> by <Eugene Khutoryansky> (2016)}
{description=Exactly what you would expect from an <Eugene Khutoryansky> video. The key insight is that the <inductor> resists to changes in current. So when current is zero, it slows down the current. And when current is high, it tries to keep it going, which recharges the other side of the <capacitor>.}