How to ensure the precision of PCB board milling
Frame production is the production of PCB circuit board in the early stage, frame design not only has an impact on the uniformity of electroplating, but also has an impact on the milling board,
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The basic rules of PCB board layout and wiring are described in detail
The output terminals of high-speed CMOS circuits have considerable load capacity, that is, quite large output value. If the output end of a gate is led to the input terminal with quite high input impedance through a very long line, the reflection problem
Protel DXP drawing process of PCB board
DRC should always be done when manually adjusting because sometimes some lines break. Each wiring layer can be printed out separately to facilitate rewiring.
The common preventive measures against ESD in PCB board design are analyzed
ESD sensitive circuits should be placed near the center of the circuit, so that other circuits can provide some shielding for them.
Causes of PCB board bending and warping and methods of prevention
In fact, the biggest source of stress in Reflow process is "temperature", which not only makes the circuit board soft, but also distorts the circuit board. This, coupled with the material properties of "thermal expansion and cold contractio...
Analysis of the real cause of PCB board explosion and countermeasures
the Tg value will decrease after baking PCB is also a problem. A better method is to control the water absorption conditions from the selection of PCB board and the manufacturing process.
Why should PCB board be covered with copper?
From the two formulas discussed above, it can be concluded that the use of thinner PCB board is beneficial to reduce the two parasitic parameters through the hole.
Radio frequency and digital circuit design on PCB board?
They can be integrated on a small circuit board, used in wireless digital audio, digital video data transmission system, wireless remote control and telemetry system, wireless data acquisition system, wireless network and wireless security system and many
PCB board has double-sided PCB
Odd layer PCB needs to add non - standard laminated core layer bonding technology on the basis of nuclear structure technology. Compared with the nuclear structure, the production efficiency of the plant adding foil outside the nuclear structure will decr
PCB board performance requirements
Every time the cat goes to the toilet, the litter box should measure the weight of the cat, the weight of the cat's excrement, the duration of the cat's going to the toilet, and record the time point of going to the toilet (the time point of entering the
Single-handed car antenna PCB board harm
The circuit board makes the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuit and the optimization of electrical appliance layout.
pcb multilayer board and double-sided pcb board these differences you know
Large scale, top ranking PCB enterprises mainly produce large batch board, PCB enterprises positioned in small batch board are relatively few, in addition to the company, the domestic production of small batch board representative enterprises mainly Chong
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