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Active Components

Basic Electronics


Active electronic components are devices that are capable of controlling voltage or current. The diode, transistor and the Integrated Circuit (IC) are examples of this.

The diode is an active device because current flow and conduction through it depends on the polarity of the input voltage across it. The transistor is an active device because it can amplify the signal and invert or change the direction of current that passes through it. The IC, likewise, is an active device because it is basically a package composed of diodes, transistors, or diodes and transistors.



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