## DC Motor – Parts of a DC Motor. Basic Operation Principle.

DC Motor

A DC motor is composed of a stator and a rotor. In many small motors, the stator is composed of magnets. Larger motors have windings.

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## What’s Static Electricity? – Examples

Static electricity is static, since it is a current that is going nowhere. Both, DC and AC current flow in some direction, but static electricity does not.

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## Energy and Electric Power. Performance

Power is the speed at which work is done. Electric power is the multiplication of the current (amps) by the voltage (volts). P = I x V.

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## Step Response of RL Circuits

When a constant voltage is suddenly applied to an RL circuit, an increasing a current goes through the conductor and creates a magnetic field that expands with the increasing current

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## Norton’s Theorem

Norton’s Theorem The Norton’s Theorem is similar to the Thevenin’s Theorem. It can be seen that, the equivalent circuit is: A Voltage source (Thevenin voltage: Vth) in series with a resistor (Thevenin resistance: RTH) Thevenin equivalent circuit This theorem says that the equivalent Norton circuit is a combination of a current source in parallel with a resistor. It is easy to find the Norton equivalent circuit when we […]

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## Thevenin’s theorem

The Thevenin’s theorem is used to convert a two terminal circuit, into a very simple circuit containing one voltage source in series with a single resistor

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