PCB board is one of the most common electronic components, almost all electronic products will use PCB board! PCB is widely used in electronics, computers, electrical appliances, mechanical equipment and other industries, it is the support body of components, mainly used to connect components to provide electrical, which is the most common and widely used [...]
The copper foil is covered throughout the circuit board and is partly etched off during the manufacturing process. The surface can be seen very small line data is copper foil. What's left is a network of tiny wires called wires, or wiring, that provide the electrical connections for the parts on the circuit board. Usually [...]
The red meter pen is grounded, the pin position in the red ring is the location, and the negative pole of the capacitor is the location. The black meter pen is placed on the IC foot to be measured, then the multimeter will display a diode value, according to the value of the diode to [...]
In view of the circuit board factory inventory management system is not perfect, improve the management system. Circuit board factory first need to establish and improve the post responsibility management system, strengthen the dynamic management of warehouse materials. The main businesses in the circuit board factory inventory procurement process include the submission of requisitions, signing [...]
The 2019 international electronic circuit (shenzhen) exhibition themed "convergence, innovation and navigation" was held at shenzhen convention and exhibition center on Dec. 4. The exhibition, co-organized by the Hong Kong circuit board association and the China electronic circuit industry association, covered 68,900 square metres, with 621 exhibitors and 3,537 booths, showcasing innovative products and technologies [...]
It can be seen from the external packaging mode that the SMT inductor has no pin; The plug-in inductor obviously has a very long pin; Although the plug-in inductance has obvious advantages in cost; But the power inductor of SMT can reduce the manual of plug-in; The maximum advantage patch power inductor has no pins; [...]
Chip inductors, also known as power inductors, high current inductors and surface-mounted high power inductors. Features: miniaturization, high quality, high energy storage and low resistance. In general, the inductance of an electronic circuit is a hollow coil, or a coil with a magnetic core. And the power inductor also has the hollow coil, also has [...]
I. failure reason of SMD inductive power: 1. The magnetic core will not release if the magnetic flux density is too high during the processing; 2. When there are impurities or hollow materials in the magnetic core, the magnetic permeability of the magnetic core will be deviated because the magnetic field of the magnetic core [...]
After the production of FPC flexible circuit board products, circuit board factories often need to use the correct method for quality testing, so as to ensure the quality of circuit board, so how do we test correctly? Caber technology production of every FPC circuit board products have to go through strict quality inspection, today caber [...]
Notes for pressing holes 1. The pressing hole can reduce the wave peak welding set by welding this kind of components. It is easy to change parts. 2. New drill bit drilling is generally adopted for pressing hole, because of the high requirement for its precision, our company's conventional pressing hole control tolerance is /-0.05mm, [...]