Classification of electrical components

Electrical components can be divided into the following categories according to their functions and characteristics:
Passive components: including resistors, capacitors, inductors, etc. These components do not actively generate signals in the circuit, but passively respond to or transmit signals.
Resistors: used to limit current and divide voltage, common ones are fixed resistors and variable resistors.
Capacitors: used to store charge and filter, common ones are electrolytic capacitors, ceramic capacitors, etc.
Inductors: used to store magnetic energy and filter, common ones are fixed inductors and variable inductors.
Active components: including transistors, integrated circuits, etc. These components require external power supply to work.
Transistors: used to amplify and switch current, common ones are BJT and MOSFET.
Integrated circuits: integrate multiple electronic components on a single chip, common ones are microprocessors, operational amplifiers, etc.
Other commonly used components:
Diodes: used for rectification and switching circuits.
Light-emitting diodes: used for indicator lights and backlighting.
‌Power supply‌: Provides stable voltage and current. Common types include regulated power supplies and switching power supplies.
‌Relay‌: A switch used to control high-power loads.
‌The role and application scenarios of electrical components in circuits:

‌Resistors‌: Limit current, divide voltage, filter, etc.
‌Capacitors‌: Filtering, coupling, decoupling, tuning, etc.
‌Inductors‌: Filtering, oscillators, power management, etc.
‌Diodes‌: Rectification, detection, protection circuits, etc.
‌Transistors‌: Amplification, switching circuits, etc.
‌Integrated circuits‌: Processors, operational amplifiers, memory, etc.
By understanding the classification and role of these components, you can better design and maintain electronic equipment to ensure its stable operation.