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Classification of electronic components

Release time:

2022-09-23 14:37

Electronic classification
1. Components: Products that do not change the molecular composition of raw materials during processing by the factory can be called components.
Components are devices that do not require energy. It includes: resistance, capacitance, inductance. (Also known as Passive Components)
Components are divided into:
1. Circuit components: diodes, resistors, etc.
2. Connection components: connectors, sockets, connecting cables, printed circuit boards (PCB), etc.
2. Devices: Products that change the molecular structure of raw materials during production and processing are called devices.
Devices are divided into:
1. Active device, its main features are: (1) self-consumption of electric power, (2) need external power supply.
2. Discrete devices, divided into (1) bipolar transistors, (2) field effect transistors, (3) thyristors, (4) semiconductor resistors and capacitors.
resistance
Resistors are represented by "R" plus numbers in the circuit, such as: R1 represents the resistor numbered 1. The main functions of resistors in the circuit are: shunt, current limit, voltage divider, bias, etc.
capacitance
Capacitors are generally represented by "C" plus numbers in the circuit (for example, C13 represents the capacitor numbered 13). A capacitor is a component composed of two metal films that are close together and separated by insulating materials. The characteristics of capacitors are mainly to block DC and AC.
The capacity of the capacitor indicates the size of the electric energy that can be stored. The blocking effect of the capacitor on the AC signal is called capacitive reactance, which is related to the frequency and capacitance of the AC signal.
inductance
Inductors are not used very much in electronics, but they are equally important in circuits. We think that inductors, like capacitors, are also energy storage elements that convert electrical energy into magnetic field energy and store energy in the magnetic field. The inductor is represented by the symbol L, and its basic unit is Henry (H), which is commonly used as the unit of millihenry (mH). It often works with capacitors to form LC filters, LC oscillators, etc. In addition, people also use the characteristics of inductance to manufacture choke coils, transformers, relays, etc.

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