Difference between active components and passive components
This page compares active components vs passive components and mentions difference between active components and passive components used in electronic circuit designs.
Electronic and electrical components are categorized into following types.
• Active and passive
• Reciprocal and non-reciprocal
• Lossy and lossless
• Active device is the one in which an external energy
source increases the output energy on one or more ports.
• They produce energy in the form of voltage or current.
Examples of active components:
• Transistor• Diode• LED• Photodiode • Integrated circuit• Operational Amplifier • 7-segment display• Battery
• Passive device is the one which does not have source that
could add energy to your signal with one exception such as mixers.
In mixer devices, local oscillator adds energy but due to working
principle of mixer, no signal gain is possible.
• They store or maintain energy in the form of current or voltage.
Examples of passive components:
• Resistor• Inductor• LDR• Switch • Thermistor• Variable resistor • Capacitor• Transformer
Difference between Active components and Passive components
Following table mentions difference between Active components and Passive components.
|Active Components||Passive Components|
|They require external power supply to operate.||They do not require external power supply to operate.|
|They have function of gain.||They do not have function of gain.|
|They produce energy in the form of voltage or current.||They store energy in the form of voltage or current.|
|Examples: Semiconductor diodes, transistors etc.||Examples: Resistors, capacitors and inductors|
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