Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Many electric motors use polarity switching as a means of generating torque. I was wondering if inductors resist polarity switching. I read somewhere that inductors resist changes in current. Does this also apply to switching the direction of flow of the current? Thanks guys.
The windings in electric motors have inductance, so they do resist the changes in current. Winding inductance will usually reduce the torque that a motor can produce at higher speeds.
All motors require a rotating magnetic field to operate. This is generated by the alternating voltage in AC motors, and the commutator or electronic switches in DC motors.
The inductance of the motor is not the primary impedance that determines the motor current, it is the back EMF generated by the rotor rotation. Thus, at startup the motor draws a large current, since its impedance is low due to no rotation, which then drops as the motor picks up speed.
normally inductor which is only a winding, not polarity requirement, when we are making mass products, we do not take care of polarity, if customer has special requirement, ask to keep same direction, we will add marker toward starting wire.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.