Here we are, nearly 6 YEARS after this was posted and it's still as good if not better than many of the other informational/instructional videos out there.
I can make a loud horn with an electromagnet a capacitor and a diode and a tiny needle it works by the capacitor at the wires and a diode going to the electromagnet. The needle is taped or screwed in place when power is applied the electromagnet try's to pull the metal needle and the screw pushes it back down and it repeats it super fast on the sound plate and it makes an Anh Anh sound
Thanks, although I've studied electronic technology, as a hobby, for some 30 years, I really appreciate the work devoted to explaining the basics in these videos. The older I get, I find that my memory sometimes has a tendency to color the facts and it's handy to have simple explanations, like these videos, to see through the fog of age. I wish these were around when I was younger. I'm glad younger students can cultivate their electronic interest through such a obtainable media.
Excellent video! The teacher assumes that the viewer doesn't already know the information. Ideas are presented in a straight, relaxed, and down to earth fashion. An effective presentation!
As an instructor of industrial electricity, I appreciate your presentation. Clear, lay terms and easy to follow. You paint a clear picture that anyone of my students can understand. Thanks for the videos.
Good stuff, very well explained - with one exception... if the current flow is instantaneously interrupted and the field collapses, it causes current to flow in the reverse direction as when the inductor was charged....known as counter emf. I don't know if that detail was left out for ease of understanding, but I couldn't let it go - Thanks for posting these videos, they're very good at getting the concept of how these components work across in an easy to digest manner.
i have worked as an electrical fitter for 3/4 years biuling power electronics for trains. thing is i have no idea how it all works... this REALLY helps. thank you very much (by the way yes is do know what im doing, just no understanding of why)
this is a great video. as you can see on the scope how the square wave turned out after it passed through the inductor and how its shape was changed. this is due in part by when current is first applied to an inductor, it is at its maximum and slowly diminishes because of saturation. Capacitors are the exact opposite they are at minimum when current is first applied but then they gradually build up to the potential.
back in mid 70s at my junior high school, I met a guy named Scott who presented me a cigar box and encouraged me to push the button....an eerie long whine emanated out of the box to my delight...and Scott lifted the lid to reveal a circuit that he had built himself to maker the noise....we became great friends at that point
I thoroughly enjoy your videos and think you do an excellent explaining things in a practical way that is easy to understand! I look forward to thatching more of your videos on basic electronics and their functions. Thank you very much!!
Thank you for your brilliant, its the first bit of electronics I've ever started to comprehend , I will be subscribing and following a lot more of the videos. Far too many youtube videos have awful back ground music and narration that is far too fast to keep up with late knowledge gaps or jumps, so thanks again for making it easier to follow.
i like your video style sir. after 7 years i find a great teacher for myself in physics with such of these experiments. I am thinking that now i understand well about electronics.thanx Alot sir
This guy taught me in 10 minutes what my professor at UNIVERSITY OF ILLINOIS @ CHAMPAIGN couldn't teach me in 2 lecture classes! (College of Engineering!)
a capacitor stores energy in its electric field. The field is created when opposite charges stored on a conductor are separated by an insulator like air. The charges then create a electric field which between them which "originates" from a positive charge and "ends" on a negative charge.
I 100% agree with Milo who commented on how some persons can teach but cannot explain it in a way that one learns from it, you do teach and explain it very well. I just finished building an electromagnet using a D battery and a screw wrapped by an insulated wire. One huge problem: as soon as I connect the negative wire the wire gets very hot and starts to smoke and I burn my fingers. Question: Is there a way around the heating and burning aspect to this project??. Thanks. AL.
A capacitor is reluctant to change voltage, and stores the charge as a potential differential between insulated plates. An inductor is reluctant to change current, and stores it as a magnetic field.
We are doing a project in Engineering design using coil sensor to build a system that can distinguish between metallic and glass ball. thanks for the video
Hi Make family and Collin! Could you please create a video on thermal acoustic cooling? It reached 112F here in WA state yesterday, and with Yellow Stone in the news, It'd be great to have a way of staying cool. Stuff found from the local hardware store would be amazing! Thank you.
What are those little spikes at the start and end of the power on/off starting at 6:05 and more prominent at 6:16? What would happen if we released those into a couple of rectifying diodes and on to create negative resistance in a lead acid battery?
Thanks for helping me improve my knowlage base, but the you need more close ups and use of "the eye brow lift" to dramatize significant points. Keep up the good work. Oh and messy hair gives your a distinct edge.
@JagdtygerII the current doesnt get decreased in increasing voltage, the max current output stays the same at 200volt as it would have been at 1.5volt, so thinking he ment a battery, it wouldnt be "much".
@ABCElevator I was taught in 1987 that when turned on in the first pico-second the current in the Capacitor is maximum and the voltage is zero because it is an effective short while in the first pico-second the current is almost zero and maximum voltage in the Inductor because of maximum 'rate of change' of current generates maximum 'rate of change' the the flux which induces maximum voltage.
the electricity comes from the power plants at very hifgh voltage, and is then converted down to the voltage that is in our houses. The reason for it being high voltage is because the higher the voltage, the lower the power loss is.
And inductor also behaves like a resistor... because of the resistance of the wire itself. There's always leakage and power loss, even though it's not too much. As said in the video, when you connect the coil to a DC power supply, it's reactance is 0, so the only remaining resistance is that of the wire, which is very small, thus a lot of current passes through it and heat is dissipated. P = Q/t
