And if you decide to flip the polarity like so the electromagnetic force will also be switched in a nutshell you pull the motors are much easier motors to drive much of the cost of twice the wiring in the coils as Bible motors. So in this case what's going to happen is inverted in this direction like so. So how this works is if you provide a voltage that means connect the positive government to one side and a negative dominant to the outside we can induce current our electromagnetic force along this coil. Well you have two electrical contacts you don't have the touch central electrical contact like you need for the motors. So wasting a lot of point space that's where vital the motors here come into play as you can see Bible and what is here. If you want to charge the other side only that half of the active if you were to charge this side of the coin you need the side is active. It's simple as that but as you might have noticed only half of the coil is active at one time. ![]() So now what's going to happen is it's going to rotate in the other direction. Now ground is connected in this side of the coil which induces electromagnetic force in the opposite direction. So now if you wanted to switch this router around and make it during the other direction or we could do is simply reverse the polarity instead of ground being connected here. Now what's going to happen is the magnet in the middle would react to electromagnet and appropriately turn light. And what I've done is I've gone into the middle to positive and I've gone the right side here to negative. Depending on which side we connect crown to us if you're gaining ground here or here we can create a magnetic force electromagnetic force around this fire. So now as you can see the three electrical contacts there's one over here there's a positive contact in the middle and there's another blank one here. I'm going to represent a router a step a motor or delay this with a diagram that looks like this. Each motor can be wired one of two ways either using a bipolar wiring or unipolar wiring support to talk about meaningful and waters. What these do is help channeling magnetic force and later we will discuss them in more detail next. If you look even closer at the router we can see these U shaped cutouts. And this is steeper the Stater In this module contains multiple electro magnets while the router in this motor is a permanent magnet itself. ![]() During the board this common step a more defined in 3D printers we can see that they do mean parts to a step a motor laser router. This makes him perfect for applications such as 3D printers CND or even industrial machinery. We're going to learn about stepper motors unlike brushed off brush less motors step towards have a high degree of judicial accuracy.
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