This series of videos is amazing. You do an incredible job of explaining decoupling capacitors. I also really like how you pause the recording while drawing or writing things that would take a long time. It makes the video flow a lot better. I'd love to see more videos by you on "basic" topics (e.g. biasing, biasing resistors). Thanks for doing these!

Your English exploits the tiny nuances of language that I need to understand a full message. Rarely I can pass through a tutorial without backtracking. I wish all teachers had the eloquence and thoroughness combined that you have.

I'm only at 1:59 and it is the best explanation I've found. My thanks for your generous sharing and talented explanation.

TREMENDOUS vids... love all this video basic series... AWESOME..👏🏾👏🏾👏🏾👏🏾!!!!

Nice video, keep it up, thanks for sharing :)

Finally, I understood why a capacitor acting like a short circuit actually removed high frequency noise.

Thanks a LOT for a super helpful tutorial!

Great tutorial. Thank you!

Is it really the source (+5) that can't "keep up" with a sudden demand for current, or is it the inductance between the source and the device that requires it that prevents the current from flowing from the source? Keeping a small source (bypass cap) close to the customer means not dealing with the inductance. Also a ferrite bead I think magnifies the inductance of a trace (or wire), it's not an inductance per say.

Great work thank you so much. Greetings from North Africa (Algeria)

thanks for those videos! is it possible to move the ferrite bead just after the power supply or in between 2 bulk capacitors?

Thanks you

nice tutorial. what program did you used for drawings?

Good video.. thank you.

Thank you so much !! :)

Great man

Lecture on opam : kzfaq.info/get/bejne/psClat2Gz7_Vops.html

Which software you used to make videos

Not bad. Thank you!

The current (sinusoidal steady-state) in a capacitor is due to the resultant electric field E_net (resultant of the applied field and an opposing electric field, the fringe field). If the capacitance of the capacitor C is made large, then the fringe field does not build as fast as it would have if C were to be smaller. With a large C, the charge sprays on the plates do not result in developing a large voltage in a given interval of time as evident from the capacitor voltage-charge relation Q = CV. The fringe field is smaller and the net field consequently is greater. Therefore, at a fixed frequency, the current increases as the size of the capacitor is increased. The current also increases as the frequency is increased. So, we say it passes higher frequencies of applied voltage. If the frequency is made smaller, the fringe field builds very rapidly and in the limit when it is dc, it blocks the applied voltage. If a resistor R is connected to the capacitor then the resistor limited current is not enough to dump charge fast enough at such high frequencies and of sufficient quantity to produce any significant opposing fringe field. Therefore, for a given RC combination the output voltage picked across the resistor is able to reproduce the input signal with less attenuation. We say that the capacitor bypasses the high frequencies …..in reality, the electric field of the input voltage passes “through” the capacitor with almost no opposition. This makes the capacitor useful as a coupling capacitor for ac signals in amplifiers and also as an emitter bypass capacitor in transistors that will afford larger output swings by reducing the amount of ac signal feedback without affecting stabilising dc feedback. It is not possible in this post to discuss in more detail current in capacitor circuits and capacitive reactance. Electrostatics and circuits belong to one science not two. To learn the operation of circuits, Current and the conduction process, resistors and how discussing these topics makes it easier to understand the principle of superposition of potential which is a direct consequence of the principle of superposition applied to electric fields, watch these two videos i. kzfaq.info/get/bejne/irqkp5Vpx5fIiaM.html and ii. kzfaq.info/get/bejne/bqiBgMKp3Ji2lqM.html The last frame of video 1 contains in the References articles and textbooks which discuss the unified approach. Sections 3.1 to 3.3 in Chapter 3 of textbook 4 discuss the operation of the RC coupling circuit with sequential diagrams using the unified approach. Also, Section 3.6 in Chapter 3 of textbook 4 discusses the operation of the bypass capacitor tied across the emitter resistor using the unified approach with the help of sequential diagrams in a transistorised common-emitter amplifier.

Why drop is more in decaps?

What is the frequency of 5 volts?

Hi, I really enjoyed watching your channel; especially these decoupling sessions are really helpful to me since that's what I am fighting with in my daily work right now. I am wondering would you happen to have some suggestion or reference text, books or websites that cover the topics of coupling, decoupling and noise issue? Thanks a lot.

Much of this advice is no longer applicable to most low voltage digital circuits. The only time to use a bead is NEVER. See kzfaq.info/sun/PLtq84kH8xZ9FNXAsf-odoGNe6h5A6D3in for current state of the art.

what U R talking.. make yourself clear n simple