Basics of electricity: how generators make AC power, how to make DC power using a commutator. This video is integrated as part of our Generators Page: www.EdisonTechCenter.org/generators.html
Finally! I found a video that thoroughly and completely explains commutators! They've always been the one thing keeping me from understanding how DC electric motors and generators work! Now i finally understand! Thank's Edison Tech Center, you rock!
My physics teacher showed this to us in class and I asked her what video this was because it was such a good explanation. She never gave me the link, so today I spent an hour trying to find it. It is the best explanation I've seen, so thanks!
The animated parts are actually from an old US Military (I think) training film, search for AC and DC power generation and old video, it should come up. Those old films were great for explaining everything mechanical/technical.
Have been studying a distance learning course trying to understand this from illustrations for over an hour and this just taught me simply in minutes! Thanks!!!!!!!
Great Video! I was always under the impression that generators generated AC voltage. This video finally cleared me of that notion. Now, to understand self-excited vs separately-excited generators and their application.
Thanks , this was the only video through I understood the movement of Ac and DC , otherwise I was fully confused , this is the best video of Generators , and I have liked this videos and will share to my friends also
one more question, why there is a need to have the split in the commutator? is it to separate momentarily the opposite electrons flow between the coil and the external circuit? thanks in advance, your reply would be appreciated
As you can see, each side of the ring has the opposite flow with the other. If there is no split, the two flows will get together and then, because they used to flow the opposite (one is + and one is -), now they become 0, therefor there's no electricity at all. Sorry for my bad English.
Since both commutator segments are really close together, why doesn’t the magnetic flux influence the flow of the current? In which case it’ll still remain an AC.
PLEASE somebody answer me If the current direction changes, shouldn't that mean that the direction of the coil rotation changes too? i got this paragraph from bbc bitesize When the coil is vertical, it moves parallel to the magnetic field, producing no force. This would tend to make the motor come to a stop, but two features allow the coil to continue rotating: the momentum of the motor carries it on round a little a split-ring commutator changes the current direction every half turn Once the conducting brushes reconnect with the commutator after a half turn: current flows in the opposite direction through the wire in the coil each side of the coil is now near the opposite magnetic pole This means that the motor effect forces continue to cause anticlockwise rotation of the coil.
I am so very very confused. What compels that rotor to move within the field, and how are those rings completing that circuit without touching the wires connected to the bulb?
