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Active & Passive Components

An electric component is any device that handles electricity. Electronic components come in many different shapes and sizes, and perform different electrical functions depending upon the purpose for which they are used. Accordingly, electronic equipment makes use of a variety of components. There are broadly two types of components, active components and passive components.

Active&passive components

Active & Passive components


1. Active components

Simply put, active components rely on a source of energy and usually can inject power into a circuit, though this is not part of the definition. From the circuit point of view, active components have two basic characteristics:

(1) Active components consumes power by itself.

(2) In addition to input signal, it must also need external power supply  to work properly.


2. Passive components

Passive components can't introduce net energy into the circuit. They also can't rely on a source of power, except for what is available from the circuit they are connected to. As a consequence they can't amplify, although they may increase a voltage or current. From the circuit point of view, passive components have two basic characteristics:

(1) Passive components consumes electrical energy by  itself, or converts electrical energy into other forms of other energy.

(2)It only inputs signal, don’t need external power to help it work properly.


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