Understanding the Star Winding in 6-12 Volt Generators

In summary, the conversation discusses the construction and functioning of an electric motor, specifically the role of copper coils in reducing resistance. The participants also mention the use of high voltage instead of current in power lines and the concept of back EMF. They also seek information on the winding and soldering process for a science fair project involving a 6-12 volt generator.
  • #1
HeyHow!
8
0
The armature of an electric motor, (the inside coils) are made from copper and have extremely low resistance. When you connect the motor to a voltage supply and supply some current to the motor, even though the resistance is low, the current may be as little as 2 or 3 Amps. Where does the resistance that limits the current come from?

I have no idea, but i believe it is an easy answer. I thought of power lines and them using high voltage instead of current so less heat is lost, but am stuck
 
Physics news on Phys.org
  • #2
Look up back EMF or counter EMF.
 
  • #3


Hi all, new to the forum, Need some information on what is called the (star) winding on the older 6-12 volt generators. WORKING ON A SCIENCE FAIR PROJECT WITH GRAND SON. To be exact need to know how to rewind them and how many wire ends are soldered to the commutator sections. Also if the other ends of the windings in the slot are all hooked together as in a neutral point. Any info would be much appreciated.Thanks.
 

What is an armature in an electric motor?

An armature is a key component of an electric motor that consists of a cylindrical core made of metal laminations, also known as the rotor. It is responsible for converting electrical energy into mechanical energy by interacting with the stator's magnetic field.

How does the armature work in an electric motor?

The armature rotates inside the stator, which is the stationary part of the motor. When an electrical current is passed through the armature's windings, it creates a magnetic field that interacts with the stator's magnetic field, causing the armature to rotate and ultimately power the motor.

What materials are used to make an armature?

Armatures are typically made of metal laminations such as silicon steel or iron, which are highly conductive and have low magnetic reluctance. These materials allow for efficient energy transfer and reduce energy losses within the motor.

How is the armature connected to the rest of the motor?

The armature is connected to the motor's shaft, which is responsible for transferring the rotational energy to the motor's output. The shaft is typically connected to a load, such as a fan or a pump, and can also be connected to a gearbox to increase or decrease the rotational speed.

What factors affect the performance of the armature in an electric motor?

The performance of the armature can be affected by various factors, including the number of windings, the strength of the magnetic field, and the quality of the materials used. Additionally, factors such as temperature, load, and voltage can also impact the armature's performance and efficiency.

Similar threads

  • Introductory Physics Homework Help
Replies
19
Views
1K
  • Introductory Physics Homework Help
Replies
2
Views
665
  • Mechanical Engineering
Replies
8
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
992
  • Introductory Physics Homework Help
Replies
13
Views
8K
  • Introductory Physics Homework Help
Replies
4
Views
2K
  • Introductory Physics Homework Help
Replies
16
Views
1K
  • Introductory Physics Homework Help
Replies
3
Views
1K
  • Electrical Engineering
Replies
25
Views
2K
  • Engineering and Comp Sci Homework Help
Replies
13
Views
1K
Back
Top