must try to be dispersed or diluted or offset, in order to maintain the good operation and performance of the machine. Available methods such as air convection cooling, add heat sink, or set up a variety of refrigerant pipelines, are called heat dissipati
It refers to a way of connecting the circuit board with the outside world, that is, on the board has been soldered gold guide Pin (or Post), in order to remove the skin of the metal wire winding, tightly wound on the tip column to complete the connection.
this method can be used for imaging inspection of the sealing quality of the packaged traditional IC or the densely assembled PCBA. There are two practical models of laser Scan (SLAM) and C-mode scan (C-SAM) on the market.
At present, most automatic exposure systems use a solid-state camera to read the target image of the negative and substrate, and then calculate the difference as the basis for position correction.
In this paper, the design of PCB Roche coil and integral circuit board will be introduced in detail, the frequency characteristics of the system will be analyzed by PSpice simulation software, and the existing experimental conditions will be used to build
the polymer resin containing phosphorus nitrogen compounds will produce non-combustible gas when it is burned. This gas can isolate the surface and air of the resin combustion
In China, the application of visual technology began in the 1990s. Because the industry itself is an emerging field, coupled with the insufficient popularity of machine vision product technology, the application of the above industry is almost blank.
Since 2005, the world's electronic circuit industry technology has developed rapidly, mainly focusing on passive component PCB, inkjet PCB process, laser direct imaging technology, optical technology PCB and nanomaterials in PCB board applications.
. In the design of PCB boards and the production of PCB boards, engineers should not only prevent PCB boards from being accidentally encountered in the manufacturing process, but also avoid design errors.
As electronic products to "light, thin, short, small" direction of progress, PCB also to high density, high difficulty degree of progress.
There are many exquisite PCB presets, whether it is the principle of presets or components mix and match, are strict requirements.
When the infrared frontal temperature gun is aimed at and close to the distance between the measured object and the tube measured by the sensor, the infrared sensor plate will collect the temperature and convert it into an electrical signal.
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