Circuit Elements


Circuit elements
There are two types of elements found in electric circuits:
 passive elements and active elements.

 An active element is capable of generating energy while a passive element is not.

Examples of passive elements are resistors, capacitors, and inductor (RLC). Typical active elements include generators, batteries, and operational amplifiers.

There are two kinds of sources:
Independent and dependent sources.

      
 An ideal independent source is an active element that provides a specified voltage or current that is completely independent of other circuit elements. These sources are represented by circular shape with current and voltage .

An ideal dependent (or controlled) source is an active element in which the source quantity is controlled by another voltage or current. this sources are represented by rhombus shape with current and voltage.


That there are four possible types of dependent sources,
1.    A voltage-controlled voltage source (VCVS).
2.    2. A current-controlled voltage source (CCVS).
3.     3. A voltage-controlled current source (VCCS).
4.     4. A current-controlled current source (CCCS).

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