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Dry goods | One article gets the generation, measurement and suppression of the switching power ripple
The switching power ripple is inevitable. Our ultimate purpose is to reduce the output ripple to a tolerable level. The most fundamental solution to achieve this purpose is to avoid the generation of ripples. First of all And the cause. With the switch of the SWITCH, the current in the inductanc...Read more -
Connected wrong power supply positive and negative circuit smoke, how to avoid this embarrassment?
Many projects of hardware engineers are completed on the hole board, but there is the phenomenon of accidentally connecting the positive and negative terminals of the power supply, which leads to many electronic components burning, and even the whole board is destroyed, and it has to be welded ag...Read more -
A few tips for judging inductance saturation
Inductance is an important part of DC/DC power supply. There are many factors to consider when choosing an inductor, such as inductance value, DCR, size, and saturation current. The saturation characteristics of inductors are often misunderstood and cause trouble. This paper will discuss how the ...Read more -
SMT uses conventional solder paste air reflow welding cavity analysis and solution (2023 Essence Edition), you deserve it!
1 Introduction In the circuit board assembly, solder paste is printed on the circuit board solder pad first, and then various electronic components are affixed. Finally, after the reflow furnace, the tin beads in the solder paste are m...Read more -
[Dry goods ] In-depth analysis of SMT why to use red glue? (2023 Essence Edition), you deserve it!
SMT adhesive, also known as SMT adhesive, SMT red adhesive, is usually a red (also yellow or white) paste evenly distributed with hardener, pigment, solvent and other adhesives, mainly used to fix components on the printing board, generally distributed by dispensing or steel screen printing meth...Read more -
[Dry goods] SMT patch slices of tin paste classification in processing, how much do you know? (2023 Essence), you deserve it!
Many kinds of production raw materials are used in SMT patch processing. The tinnote is the more important one. The quality of the tin paste will directly affect the welding quality of the SMT patch processing. Choose different types of tinnuts. Let me briefly introduce ...Read more -
One article understands | What is the basis for the selection of the surface processing process in the PCB factory
The most basic purpose of PCB surface treatment is to ensure good weldability or electrical properties. Because copper in nature tends to exist in the form of oxides in the air, it is unlikely to be maintained as the original copper for a long time, so it needs to be treated with copper. There ar...Read more -
Learn about the clock on the PCB
Note the following considerations for the clock on a board: 1. Layout a, the clock crystal and related circuits should be arranged in the central position of the PCB and have a good formation, rather than near the I/O interface. The clock generation circuit cannot be made into a daughter card or ...Read more -
Keep these PCB wiring points in mind
1. General practice In the PCB design, in order to make the high frequency circuit board design more reasonable, better anti-interference performance, should be considered from the following aspects: (1) Reasonable selection of layers When routing high-frequency circuit boards in PCB design, the ...Read more -
About DIP devices, PCB people some do not spit fast pit!
Understand DIP DIP is a plug-in. Chips packaged in this way have two rows of pins, which can be directly welded to chip sockets with DIP structure or welded to welding positions with the same number of holes. It is very convenient to realize PCB board perforation welding...Read more -
Why is the CAN bus terminal resistor 120Ω?
The CAN bus terminal resistance is generally 120 ohms. In fact, when designing, there are two 60 ohms resistance stringing, and there are generally two 120Ω nodes on the bus. Basically, people who know a little CAN bus are a little bit. Everyone knows this. There are three effects of the CAN bus...Read more -
Learn these two circuits, PCB design is not difficult!
Why learn power circuit design The power supply circuit is an important part of an electronic product, the design of the power supply circuit is directly related to the performance of the product. Classification of power supply circuits The power circuits of our electronic products mainly includ...Read more
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