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“PCB is the provider of electrical connection of electronic components, and the layout of components is very important in PCB design, which will affect the final performance of products. If the layout and arrangement of components are unreasonable, the electrical and mechanical properties of the products will decrease, and it will also bring inconvenience to […]

The development of modern science and technology leads to the miniaturization of electronic components and the extensive application of SMT technology and equipment in electronic products. SMT manufacturing device has the characteristics of full automation, high precision and high speed. With the improvement of automation, higher requirements are put forward for PCB design. The PCB […]

Cadence Allegro has almost become the actual industry standard in high-speed board design, and the latest version is Allegro 16.5. Combined with its front-end product Capture, it can complete high-speed, high-density and multi-layer complex PCB design and wiring. 01 Q: What problems should be paid attention to when wiring high-frequency signals? A: impedance matching of […]

To make a long story short, it’s not easy to make a good impedance board! Some model factories give several fixed laminated structures, and then let customers calculate their impedance according to their lamination … To be honest, Xiaobian really wants to swear at these board factories! If you can’t do it, you can’t! How […]

In this article, the topology of buck, boost and buck-boost will be introduced from different aspects. Step down converter Figure 1 is the schematic diagram of asynchronous buck converter. The buck converter reduces its input voltage to a lower output voltage. When the switch Q1 is turned on, the energy is transferred to the output […]

In the process of PCB design, if possible risks can be predicted and avoided in advance, the success rate of PCB design will be greatly improved. Many companies will have an indicator of the success rate of PCB design when evaluating projects. The key to improve the success rate of a board lies in the […]

There is an appropriate capacitor near the power supply pin of the ic, and the output voltage of the IC can jump quickly. However, the problem will not stop there. Because of the characteristic of finite frequency response, the capacitor can’t produce the harmonic power needed to drive the full-band IC output cleanly. In addition, […]

Whether PCB is tested or mass-produced, it is necessary to verify whether there is any problem with PCB products by using a template first. Simply speaking, PCB proofing is the trial production before mass production. It is the process that electronic engineers start small batch trial production to the factory after designing the circuit and […]

Small batch processing of planting balls in SMT proofing provides a flexible, fast, accurate and low-cost solution for secondary assembly, and large EMS enterprises have gradually entered this field. It is more and more necessary to apply ball planting technology in SMT proofing small batch processing industry, and EMS enterprises can only respond to OEM […]

FPC, also called flexible printed circuit board for short, is commonly known as FPC in the industry. It is a printed circuit board made of flexible insulating substrate (mainly polyimide or polyester film). It has many advantages that rigid printed circuit boards do not have, such as it can be bent, rolled and folded freely. […]