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The difference between active components and passive components

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.05.20
Active components 

Active components refer to electronic components that can control the magnitude of current and voltage, and they require external power or signals to operate. Common active components include transistors, field-effect transistors, integrated circuits, etc. Active components have functions such as amplification and switching, which can effectively control and adjust current or voltage.

Active components are widely used in electronic products, such as computers, mobile phones, audio systems, etc., and can achieve various functions such as signal amplification and logical operations.

Passive components 



Passive components refer to electronic components that cannot control the magnitude of current and voltage. Passive components generally have certain characteristics such as resistance, capacitance, inductance, etc., such as resistors, capacitors, inductors, etc. Passive components are mainly used for circuit connections, energy storage, filtering, and cannot actively control the operation of the circuit.

Passive components are widely used in various circuits, such as power supplies, amplifiers, filters, etc., playing a role in connection and adjustment.

Differences and Applications

The main difference between active and passive components is whether they can control the magnitude of current and voltage. Active components can control circuits through external power sources or signals, and have functions such as amplification and switching; Passive components can only serve as connections and adjustments, and cannot actively control circuits.

In terms of application, active components are widely used in various electronic products and can achieve various functions; Passive components are mainly used for connection, adjustment, filtering, and other aspects, playing a role in supplementing the circuit properties. In circuit design, it is necessary to select appropriate active and passive components based on specific circumstances to achieve the design objectives.

Ending

Although active and passive components have different roles and characteristics, they together constitute an indispensable component in electronic circuits. For electronic engineers and enthusiasts, understanding the differences and application scenarios between active and passive components can be helpful in circuit design and repair.
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