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Basic Process of Electronic Product Design and Introduction of PCB

Basic Process of Electronic Product Design and Introduction of PCB

The basic process of electronic product design includes project start-up, market research, project planning, detailed project design, schematic design, PCB layout, wiring, PCB board making, welding, function and performance testing. In the process of teaching, we usually design electronic products according to the following steps:

The first step is to acquire the functions that the product needs to achieve.

Step 2: Determine the design scheme and list the required components.
Step 3: Draw component symbol library according to component list.
Step 4: According to the function designed according to the need, call the component symbol library, draw the schematic diagram, and use the simulation software to simulate.
Step 5: Draw component package library according to the actual component shape.
Step 6: According to the schematic diagram, call the component package library and draw the PCB diagram.
Step 7: Metal core PCB prototype;
Step 8: Circuit welding, debugging, measurement and testing, if not meet the design requirements, repeat the above steps.

In the above process of electronic product design, PCB design is the most important link and the core technology of electronic product design. In the actual circuit design, after the schematic drawing and circuit simulation are completed, the actual components of the circuit need to be installed on the printed circuit board (PCB). The drawing of schematic diagram solves the logical connection of circuit, and the physical connection of circuit elements is realized by copper foil on PCB.

I. What is PCB

Printed circuit boards (PCBs) refer to boards that are processed into certain sizes on the basis of insulating substrates. At least one conductive pattern and all designed holes (such as component holes, mechanical mounting holes and metallized holes) are arranged on it to realize electrical interconnection between components.

II. Function of PCB board

Printed circuit boards usually play four roles in electronic equipment.

(1) Provide necessary mechanical support for various components in the circuit.
(2) Provide electrical connection of circuit to realize wiring or electrical insulation between various components such as integrated circuits.
(3) Provide the electrical characteristics required by the circuit, such as characteristic impedance.
(4) Each component installed on the board is marked with marking symbols for easy installation, inspection and debugging.

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