X 47 48 - IR

@JMac Hmmm...

I thought in motors everything is related to MMF = IN

+ Phi = 10^8 lines => Current makes the lines..

@JMac Hmm...

Or anything about power...

I don't know why I don't see anything about voltage in these formulas! /:

Those that I sent were just some examples and are not important at all. you'll see similar motors by googleing

Just wanted to know how the voltage effects on RPM in a motor with a formula. I understand why high current does effect, but I don't understand why a motor needs 50V when it only needs 2 amps

@JMac About the motor. I know they are different. What I'm trying to say is some motors need much more voltage than the others instead of the current when they're supposed to be more powerful.

Hmmm, I don't know why different websites say different things! I:

xdhmotor.en.alibaba.com/product/1921334555-218538928/…

ibb.co/zf9LmZH

of course, I think it wasn't a yes-no question!

@JMac Yes, I read the datasheet, it says it needs 50 Volts

@Loong I saw that too lol I think it's the output power

The first one is a jet motor, and the second one is a simple DC motor. I don't understand why the first one needs 15V

Anyways, Do you know how high voltage effects the magnetic field?

The lower A gets The higher R gets

@JMac Yes, I mean opposite

I get it a bit, I think! You need high voltage to get high current. But why don't they use more radius for the coil to make motors? The resistance is equal to R = pL/A

@dmckee I've got to do something with this MathMax!

@JakeRose I told you as simple as I could. I know the formula of the power, It's I*V. But as I told you the current makes the magnetic field, Not the voltage, if you raise the current you'll raise magnetic field. The magnetic field causes the motor to move.

I've read the current makes the magnetic field which causes motors to spin. But why some powerful motors need high voltage instead of current? What does high voltage do with RPM?

I've read the current makes the magnetic field which causes motors to spin. But why some powerful motors need high voltage instead of the current? What does high voltage do with RPM?

I'll try again anyways

@dim I don't know why I can't wire it up on tinkercard I:!

+ By the way. When I say transistor I mean NPN transistors!

@dim Lighting up and off a lighting diode is enough

@dim Right. But I thought using transistors as a switch has a rule! What I wanted to know is that rule. I think for example the saturation mode has the highest voltage in the base terminal. Though I couldn't do anything using tinkercard ):

Does anyone know how can I use a transistor as a switch? Please send me a tinkercad circuit if you can. Thanks.

> It means: a and b have the same remainder when they are divided by n.

What does that mod mean in that equation?

I was reading about RSA public key encryption which I faced with this phi function..

Thanks. Helped me.

I don't know why your messages are not being interpreted, they look like $\e{}...

Does that mean d is equal to e^-1 when e is multiplied by n? The equation was d=e^−1modϕ(n)

d=e−1modϕ(n) What is the meaning of "modϕ(n)"?

What is the key size of AES encryption?

Thanks again... I'll read some other books about circuits

@JohnRennie Hmmm, I thought they're basics of course in that book which I bought it said using electromagnetics rules you can prove many things... but there is a conflict between electromagnetic rules and circuits or something like that... :D I'm not a native English speaker so statements are a little different and it's some times difficult to say!

I never understood electromagnetics... I bought a book about it... It explains Maxwell's equations and more... but some of my friends say you're wasting your time... IDK, is that right?

Do you think reading books help to improve your electronics skills? I read books mostly