Thursday, December 17, 2009

Brushed DC Motor Basics Video

Brushed DC Motor Basics Part 1 of 2
This video on brushed DC motor basics is part 1 of a four part series of web seminars that will go into motor control drive topologies, pulse width modulation ( PWM ), and the new enhanced PWM.



Brushed DC Motor Basics Part 2 of 2




Brushed DC Motor Fundamentals
INTRODUCTION
Brushed DC motors are widely used in applications
ranging from toys to push-button adjustable car seats.
Brushed DC (BDC) motors are inexpensive, easy to
drive, and are readily available in all sizes and shapes.
This application note will discuss how a BDC motor
works, how to drive a BDC motor, and how a drive
circuit can be interfaced to a PIC® microcontroller.

PRINCIPLES OF OPERATION
The construction of a simple BDC motor is shown in
Figure 1. All BDC motors are made of the same basic
components: a stator, rotor, brushes and a commutator.
The following paragraphs will explain each component
in greater detail.



SIMPLE TWO-POLE BRUSHED DC MOTOR
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AC or DC? Brushed or Brushless?


DC Motors provide high power in a small package. Oriental Motor manufacturers a wide range of AC and brushless DC (BLDC) products. So why choose one technology over the other? There are several key differences between the different technologies.

Motor Construction



Brushed DC motors depend on a mechanical system to transfer current, while AC and brushless DC motors use an electronic mechanism to control current. The brushed motors have a wound armature attached to the center with a permanent magnet bonded to a steel ring surrounding the rotor. As the brushes come into contact with the commutator the current passes through to the armature coils.
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Sunday, December 13, 2009

Video A simple DC Motor and Homopolar Motor

A simple DC Motor DIY
a simple DC motor made from a few wires, couple of magnets and a battery



The simplest motor of the world

A motor made only by a wire and a magnet. It uses one AAA battery.


World's Simplest Motor - Homopolar Spiral
The homopolar spiral motor is one of the simplest and most easy to make motors in the world.




Homopolar Motor - 5 minutes ready to work

Saturday, December 5, 2009

How DC electric motor works Video

How DC motor works Video



Direct Current Electric Motor Video



Video DC electric motor explained by Mr. Burshkin
Mr. Burshkin explains how the standard DC motor works

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