Types of Multivibrators

The Multivibrator circuits are classified in 3 general categories.

1-       Astable multivibrators.

 Astable multivibrators circuits contain no stable state but still keep changing from one state to the other, and so the named as multivibrator. There useful application is as clocks or oscillators. These are also used as a 555 as an astable multivibrator.

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Types of Motors

You will come across many types of motors. People have been trying different ways to make a motor nearly as long as they have been messing with electricity. Here is a brief overview on some types of DC motors.

Brushless DC Motors

The brushless DC motors are cousins to the DC PM motor but instead of using brushes for commutation, they usually use some type of electronic control. To accomplish this, usually the inner side of the motor contains permanent magnets (where the armature is in the DC PM motor). This is known as rotor. The windings are on the outside and are referred to as the stator, or field windings.

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