What is a PCB in Electronics?
The circuit board is a component required by all electronic devices. It plays a decisive role in the normal use of the device. What is the wiring board and wiring board? When understanding the role of the circuit board, we need to understand some basic concepts, main structures and other related knowledge of the lower line board.
Circuit board definition:
In the designed material, it is designed to be designed as a printed circuit, a combination of printed elements, or a combination of two combinations. Conductive patterns of electrical connections between components are provided on the insulating substrate, which are called printing lines. Desta maneira, the finished printed circuit board or printed circuit board is called the printed circuit board, also known as the printed circuit board or printed circuit board.
The names of the circuit board include: placa de circuito, Placa PCB, substrato de alumínio, placa de alta frequência, placa de cobre grossa, placa de impedância, PCB, placa de circuito ultrafina, placa de circuito ultrafina, impressão (tecnologia de escultura em cobre) placa de circuito, etc.. The circuit board makes the circuit refined and intuitive, and the clear layout makes product production optimization more reasonable. The circuit board may be referred to as a printed circuit board or a printed circuit board.
Circuit board structure:
Printing circuit board is mainly composed of pads, perfurações, furos de montagem, fios, componentes, fillers, etc.. The main functions are as follows:
Almofada: Furos de metal usados para soldar pinos de componentes.
Horcho: Metal holes used to connect component pins between layers.
Furos de instalação: used for fixed printed circuit boards.
Rota: Filme de cobre de rede elétrica para conectar pinos de componentes.
Preencher: Copper applied to the ground network can effectively reduce impedance.
Raw material of the circuit board
The raw materials of the circuit board are divided into: glass fiber, CEM-1, CEM3, FR4, etc.. The source of this material is visible in everyday life. Por exemplo, the core of fireproof cloth and fire felt is glass fiber. We immersed the tight and strong glass fiber cloth in the resin, and the hardening obtained the PCB substrate that is insulated and not easy to bend – if the PCB board is broken, the edges are white layers, which proves that the material is the resin as the resin.
Classificação
Se a placa de circuito estiver dividida em três categorias principais: painel único, painel duplo, e multi-layer circuit board,
1. Single panels, on the most basic PCB, as partes estão concentradas em um lado, e os fios estão concentrados do outro lado. Porque o fio só aparece de um lado, this PCB is called a single-sided line board. Painéis individuais são geralmente simples e de baixo custo, mas a desvantagem é que não podem ser aplicados a produtos excessivamente complexos.
2. The double panel is an extension of a single-eye panel. Quando a fiação de camada única não consegue atender às necessidades dos produtos eletrônicos, o painel duplo deve ser usado. Ambos os lados possuem cobertura e fiação de cobre, e pode ser usado para conduzir a linha entre as duas camadas através de orifícios para formar a conexão de rede necessária.
3. Multilayer board means a printed board having an insulating material having a conductive pattern layer of more than three layers and the insulating material therebetween, and the conductive pattern is interconnected as required. Multi-layer wiring board is the product of the development of electronic information technology towards high speed, multifuncional, grande capacidade, grande volume, pequeno volume, afinar, direção leve.
Route board function:
In the circuit, the circuit mainly plays the role of wires and a fixed role in the era of the electronic tube. There is no circuit board. The components are relatively large. Naquela hora, many welded racks were used to fasten components. Connect with a wire. There are many wires that have been tied together for a long time. The circuit board allows the circuit to be mini and intuitive. It plays an important role in batch production and optimization of fixed circuit electrical appliances. It has an insulating board with a connecting conductor and fastens the Componente eletrônico to it and connects to the circuit. Simples, por exemplo, can be understood as this. The circuit board is the carrier of electronic components.
