Circuit is easy to be damaged in overvoltage, overcurrent, surge, etc. With the development of technology, PCB products are increasingly diversified and complicated, and circuit protection becomes particularly important.
There are two ways to judge the quality of the circuit board: 1. standard rules of size and thickness, 2. light color, 3. Welding appearance
Common rules of thumb, vertical wiring, heat dissipation hole, right Angle wiring, "3W" rule, "20H" rule are used in PCB wiring.
PCB wave soldering, surface welding to use detergent or pure water to clean off the pollutants on the board, with the design of electronic parts more and more diverse, but also more and more small, washing made gradually appeared some problems.
PCB manufacturing is the transformation of a circuit board design into a physical PCB that complies with the design specification. Outsourcing is usually done by a contract manufacturer (CM) who strictly follows the specifications provided by the designer
Static electricity is the relatively static charge, is the excess or insufficient static charge on the surface of the object; Is a physical phenomenon in which the positive and negative charges on the surface of an object are separated.The basic physical
The quality of component package will directly affect the performance of chip itself and PCB design and manufacture connected with it.
By shortening construction time and compressing work-in-process retention.Difficulty is the ladder of success, the success of the process is reasonable, reasonable, reasonable.
Engineering software and online resources tend to be expensive, but can be very beneficial for professionals, students, and hobbyists.
Normally speaking, if the protection and raw material procurement in accordance with national standards, solder will not cause significant harm. Now it's basically lead-free products.
In the design of PCB, I found that many people do not understand the layers of PCB, each layer has the characteristics of each layer, function.
When looking for faulty capacitors, it is important to check the capacitors close to the heat source, such as the capacitors near the heat sink and high-power components. The closer to the capacitors, the greater the possibility of damage.
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