Active device:
A device that requires an external source of energy to be ready for operation and has an output that is a function of present and past input.
e.g, Diodes, Transistors, PN and PIN junctions, ICs and varactors etc. we have to apply an external voltage usually called as Vcc, to these devices before placing in circuit network.
Passive device:
A device that does not require a source of energy for its operation.
e.g, such as Resistors, Capacitors, Inductors, etc. We place these devices in the circuit, network without applying any external voltage.
A device that requires an external source of energy to be ready for operation and has an output that is a function of present and past input.
e.g, Diodes, Transistors, PN and PIN junctions, ICs and varactors etc. we have to apply an external voltage usually called as Vcc, to these devices before placing in circuit network.
Passive device:
A device that does not require a source of energy for its operation.
e.g, such as Resistors, Capacitors, Inductors, etc. We place these devices in the circuit, network without applying any external voltage.
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