Understand crystal oscillator from PCB circuit board
Crystal oscillator is short for crystal oscillator. In fact, the common term crystal oscillator also includes crystal resonator, because the core is a quartz crystal.
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Must PCB circuit board do impedance?
the tin plating of pcb circuit board is the most prone to problems in the production of the whole circuit board, is the key link affecting the impedance. The biggest defect of electroless tin layer is easy to change color (easy oxidation or delixing), poo
PCB board making technology
All the technical requirements mentioned above should be prepared before light painting. Such as mirroring, solder expansion, process line, process frame, line width adjustment, center hole, contour line and other issues should be in
PCB surface mounting technology
Therefore, even for the density is not high, the general number of circuit board, circuit board automatic detection is not only basic, but also economical. In complex circuit board inspection, two common methods are the needle bed test and the double prob
PCB design experience
Layout is an important part of design. The result of layout will directly affect the effect of wiring, so it can be considered that a reasonable layout is the first step of successful PCB design.
The growth history of PCB
In this case, the cost pressure of the downstream industry may be partially passed on to the printed circuit board industry, and the obstacles to higher prices of printed circuit boards are greater.
How to draw the perfect PCB board?
Priority shall be given to the layout of important unit circuits and core components. Routing signal line priority: analog small signal, high-speed signal, clock signal and synchronization signal and other key signals priority wiring.
Diversification of PCB
Therefore, the combination of soft and hard board, is the flexible circuit board and hard circuit board, after pressing and other processes, according to the relevant process requirements combined together, the formation of a circuit board with FPC charac
PCB detailed layout, wiring design overview
For some simple products, PCB design may simply connect all the devices and networks accordingly. For high-speed circuit, RF circuit, PCB design directly affects whether the function of the product is normal, whether the product can meet the market requir
PCB drilling
Over the course of the PCB industry's decades of development, mechanical drilling has withstood the growing demand for printed circuit boards and is still recognized as a safe and cost-effective method of opening holes.
Hole classification and its function on PCB
It can be divided into coated holes and non-coated holes according to whether it participates in electrical connection. Coated holes are involved in PCB electrical connection, and non-coated holes are not involved in PCB electrical connection.
PCB development
On November 16, 1904, British scientist John Ambrose Fleming for his invention of the vacuum tube Fleming valve, applied for a patent, which marked the birth of the first vacuum tube in human history, and the world has since entered the electronic age.
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