Classification of components

Electronic components can be divided into four categories according to their functional characteristics. The first is passive components. These components do not have the function of generating or amplifying electrical energy, but they play a key role in connecting, compensating, and distributing in the circuit, such as resistors and capacitors. The second is active components. These components can actively generate, amplify or control electrical energy, such as transistors, diodes, etc. They usually require external power support. The third category is circuit protection devices, which focus on circuit safety protection, such as overvoltage protectors, fuses, etc., which can effectively prevent circuit overcurrent or electromagnetic interference. Finally, there are power components, which are mainly responsible for power conversion, such as transformers, inverters, etc., which convert grid power into the form required by the equipment. In the design and manufacture of electronic equipment, accurate classification and selection of components are crucial and