afxinfinitee then your physics course was pretty bad. Because Scott explained the theory very poorly (in order to make it ‘easy to understand’). For example induced current in a loop of wire is directly proportional to the rate of change of the magnetic flux of the loop. He explained this without using technical term (which is great) but is not the general case. Also, electromagnetic induction is described by Faraday’s law of induction, not Lenz’s law. Which can be derived from Faraday’s.
@sebastian bradfield College equates to the last two years of US high school, 16-18. In the UK we finish high school at 16 with GCSEs, go to college for two years to get A Levels and these A levels are what we put towards our degrees. GCSE and A Level physics included an electronics module.
GreatScott! I would like to ask you I have made the bench power supply from an old pc power supply And I did every thing like you did But I can hear a weird sound coming for the power supply And I tried to attach a car horn to the 12 volt line And the power supply turned off
I love how you explain about this, my teacher always explained to the classes like spelling a magic. After he finished spelling, i dont know why all the students like got amnesia, even me.
You have no ideia how rare is your video. Simple and directly to the point. I mean rare because I'm watching several videos and very few explain right.
when you talked about how we have a field in our bodies bc we act like an antenna it made me think of something i realized as a kid, mp3player's that have a radio option but require headphones to work the radio use your head as a way to get signal. i found this out bc slight twists of my head could make me lose signal to some stations. i thought it was cool. you could even boost signal by touching the earbuds with your fingers.
Thanks! This was actually a VERY helpful video. As a beginner in this area of science, I am very grateful for the thorough explanation and example. Thank you.
When I was a little kid i would hook up a 9v battery to a coil and when I disconnected it i noticed I would get shocked. So I added few wires to end of the coil. Had some handles to ends and had kids at school hold on to them. So they would get shocked when I turned it on and off. It was quick pulse nothing to painful. Just fun and games. This makes sense now. Later on I used a 120v wall adapter transformer and had it the opposite way. Added a small Dc motor so it would turn on and off really fast. So if you held on to it. You would not be able to let go.
Man you are awesome I can't thank you enough. You teach the electronic much better than my high-school teacher, and you have great equipment over there. Thanks again for the all of your videos. Waiting for the next one.
Just want to thank you for the videos, find them entertaining and educating. I'm in my thirties and haven't done anything with electronics since I was in my mid teens as I've been on the programming side. these videos just nicely click my memories back into place.
Well, hmmm, I understand most electronics on any circuit board, I was very excited to see you doing this one on coils. I still, well you lost me. I'll watch it again. I wish you had given an example say in a common circuit like a small amplifier, and show the difference with and without the coil. Also what is the difference between a coil and a choke? I need to watch this again.
Another great video especially like your DIY bench power supply which I am trying to recreate using a 10A 12V input supply,should be good when finished 😉
I just watched 2 of your videos and subscribed because I actually understood this one, and it helped me understand a lot more about the tools I use daily in SaaS. The other was the explanation you gave on salvaging parts. It was like (a summary of) a book summary on what is inside of those things, for us non-hardware folks.
I like the water analogy for inductors: A water pipe with a heavy (flywheel-like) turbine put inline. It takes some work to get it spinning, but then when you disconnect the input - it still wants to spin for a bit. If there is no output path - the pressure will momentarily rise as the water is "kicked" by the inertia of the flywheel. Water pressure=voltage, flow speed=amperage, water volume flow rate=power, pipe diameter/flow impedance=resistance, static pressure needed to open 1-way valve=forward voltage
learned how to build my own telicoil headphone for 5 dollars with my own inductor so I have wireless headphone for my hearing aid and cochlear implant. the original one cost 80 dollars so I found one that's cheap but it broke. now I know how inductor works.
Scott your Great😎 well presented When you say "iron" the R needs to be silent. It's more I -on. It did make me smile, love the channel and ALL your videos an projects.
Dear @GreatScott! so is it safe to assume that it never hurts to have a flyback diode at the ends of every induction coil we make at home no matter the use?
Love this video! I always wanted to see on a scope what happens when you vary inductance in a circuit. I wish I would have seen this video years ago when I was in college. thanks. :)
dude aready study all those basics i already graduated from collage finally after waste 2 years of life i got high diploma in electronics as now im tech electronics but i wanna build that LED lights the blue like on your video when you say start ? how i can build that ??
Hello great Scott you are my favorite youtuber! Can you please make a video on how to turn a regular step down transformer into a high voltage transformer
Great video. This reminded me of a problem I have. I have an old calculator that ran on 2 rechargeable AA. I would like to convert it to using its' wall wart how do I bypass the batteries and use just the charger.
If the charger is the same voltage as the batteries are putting out then just clip the end off the charger and connect the wires directly to the battery terminals
I want to connect my 12v dc motor to a adjustable plug in power supply for purposes of making a small lathe(ergo the engine load will be high when applying chisel to wood). Do I have to use a fly back diode like shown to protect the coils of the plug in trafo?
+GreatScott! There is no current from power line when nothing isn't powered on, so no EMF so no inducted voltage in human body antena, but it is almost true cus line and human body are like plates of capacitor so when you watch your voltage on oscilocsope you get voltage on one end of capacitor plate in this case human body. I too thought that voltage in human body 50hz from mains is due to EMF but profesor told us otherwise, and other spectrala comentes are from inducet EMF from mobile networks TV signals Wi-Fi etc.
actually, there is a little flow of current. since the cables in a power outlet also act as capacitors with very little capacitance, they get charged and discharged because there is an ac-voltage applied to them. therefore, there is (at least) a little current.
I have been watching your videos and I am understanding the concepts. I have been taking apart electronic components since I was 5. I took a motor and a fan from a Star Trek toy and attached it to my Steve Austin. How do i get a job in electronics? I want to turn my hobby into a career. I'm in Canada eh! Any help is appreciated.
+greatscott I'm looking to build a simple circuit for an automotive application. In some vehicles, when you shut the doors, the interior light fades off rather than just going flat off. I'd like to incorporate this feature into my pickup truck. Considering all the incandescent bulbs inside have been replaced with LEDs, I don't have to deal much current. I'm thinking a beefy capacitor or two may do the trick, but I'm sure it's more complicated than that. Everything is for some reason. Do you have any suggestions?
I think there is a problem in 5:14 1 min before you said induced current in a inductor is in reverse direction. But while you explain boost converter u said after switch off I induced feeds the circuit to 5V. I think it should be ; Stored energy in inductor feeds the circuit to 5 V. Not a native english speaker so i hope i could explain what i mean :D
