Energy Sources

A warm welcome to every one . Already we have completed some interesting and simple topics but they are the basic roots for a knowledge tree to grow.
Today's post is about the energy sources.
By going through this concept you will be able to know about the types of energy sources and their classification.

Energy sources are categorized into two types . They are:
1.Independent energy source.
2.Dependent energy source.

Both of the energy sources either be a voltage source or a current source.

Independent energy sources are the energy sources where the strength of the voltage and current is not changed by any variation in the connected network .

Independent energy sources are indicated by a circle symbol .

Dependant energy sources are the sources whose magnitude of voltage or current are decided by varying the elements in the connected network.
There are four types of Dependant energy sources.They are:
1.Voltage Controlled Voltage Source.
2.Voltage Controlled Current Source.
3.Current Controlled Current Source.
4.Current Controlled voltage Source.

Whereas the dependant sources are indicated by a rhombus symbol.

Examples:

Voltage sources: Batteries and Generators.

Current sources: Most of the semiconductors like transistors i.e., BJT,JFET,MOSFET etc.,

In addition to these there are some other types of sources where the voltage and current may vary with time exponentially, sinusoidally those sources are called alternating sources.