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With the development of electronic technology, large-scale and high-precision PCB boards have been widely used, and the mounting density of components on PCB boards is getting higher and higher. Simple single-sided and double-sided wiring can no longer meet the requirements of high-performance circuits, so multilayer PCB boards are needed for wiring. High-frequency circuits tend to […]

As the most general analog device, operational amplifier is widely used in signal conversion and conditioning, ADC sampling front end, power supply circuit and other occasions. Although the peripheral circuit of the operational amplifier is simple, there are still many points needing attention in the use process. 1. Pay attention to whether the input voltage […]

In PCB design, whether to use SMD magnetic beads or SMD inductors mainly focuses on the application scenario. Design pcb The design of printed circuit board is based on the circuit schematic diagram to realize the functions required by circuit designers. The design of printed circuit board mainly refers to layout design, and the layout […]

The layout of PCB Layout design is described from three aspects: right-angle layout, differential layout and serpentine: I. Layout design right-angle routing (three aspects) The influence of right-angle routing on the signal is mainly reflected in three aspects: first, the corner can be equivalent to the capacitive load on the transmission line, slowing down the […]

1.layout design PCB wiring and layout isolation criteria: strong and weak current isolation, large and small voltage isolation, high and low frequency isolation, input and output isolation, and the demarcation standard is one order of magnitude difference. The isolation method includes: the space is far away and the ground wire is separated. 2. The crystal […]

Circuit board simulation is no longer an option but an inevitable way for most layout designs today. EDA industry is the key factor to promote the rapid development of the global electronic industry, and its market size is as high as $1 trillion. Most of the sales are monopolized by several big companies (measured by […]

When it comes to outsourcing, the first thing that people think of is to send products or parts that they can’t or don’t want to produce to other factories for OEM. In fact, driven by the increasingly fine social division of labor, modern outsourcing is not only the outsourcing of products, but also the initial […]

Drilling jig is one of them, but 90% of the jigs have been wave welded. This kind of jig is made of hard computer gongs, and some can move the twist drilling equipment or other drilling devices to the position of each hole accurately by moving the mold. A typical practice is to leave a […]

In PCB layout design and wiring, it is required to avoid the situation of right angle wiring as far as possible, which has become one of the standards to measure the quality of wiring, so how much impact will the right angle wiring have on signal transmission? In principle, the right angle wiring designed by […]

1、 Circuit board layout design steps Generally speaking, the basic process of layout design can be divided into three steps. (1) Design of circuit schematic diagram The design of circuit schematic diagram is mainly based on PROTEL099′ s Advanced Schematic system to draw a circuit schematic diagram. In this process, we should make full use […]