Working Principle Of Electrical Components

The working principle of electrical components can be explained in detail from the following aspects:
Common electrical components and their working principles
Resistors: Resistors control circuits by hindering the flow of current. Their working principle is based on Ohm's law, that is, current is proportional to voltage and inversely proportional to resistance. Resistors play the role of voltage divider and current divider in the circuit, and are often used to limit current and reduce voltage.
Capacitors: Capacitors are used to store charge, and their working principle is based on the establishment and storage of electric fields. When voltage is applied across the capacitor, an electric field is formed between the positive and negative poles, and the capacitor will store charge. Capacitors can store energy in the circuit and release energy when needed.
Inductors: Inductors are used to store magnetic field energy, and their working principle is based on the phenomenon that a magnetic field is generated when current passes through a coil. Inductors can delay the change of current and play a role of filtering and energy storage.
Diodes: Diodes have unidirectional conductivity, and their working principle is based on the behavior of PN junctions. When a forward voltage is applied to a diode, current can flow; when a reverse voltage is applied, almost no current flows. Diodes are often used in rectification and switching circuits.

‌Transistor‌: Transistors are used to amplify and control current, and their working principle is based on the characteristics of semiconductor materials. Transistors change output signals by controlling input signals. Common transistors include field effect transistors (FETs) and bipolar junction transistors (BJTs).