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Anonymous users2024-02-10What is the difference between the top layer and the top paste layer in PCB?
The top layer is the design layer of the straight top layer. Generally, the placement of parts and wiring are carried out on this level.
Top paste should refer to the paste mask top layer, which refers to the layer of the mesh board, generally PCB, the manufacturer will not look at this layer, and will only use this layer when you open the screen board.
If you remove the top solder layer of the PCB (that is, do not apply green oil), then the top layer is the top paser?
No. When you say that you add a signal layer under the PCB top layer, do you mean add it to the bottom layer? If it is added to the bottom layer, of course it will be separated.
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Anonymous users2024-02-09Each layer has a fixed rule, and you can go to one layer but the other layer will not be transformed, because it only represents its inherent characteristics and represents a specific meaning.
In this you can use a specific layer in the middle to complete your idea, but this must first contact the manufacturer of your PCB, because it is not enough to do it. The mechanics that add strength are not added to the layer, but by the skeleton outside the board. The middle layer is often used as the ground layer and the power layer, and there is also a screen effect.
In special cases, the signal layer can also be made in the middle layer. Between layers, you "add an insulating layer between the two layers by default" is not the default, it is required.
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Anonymous users2024-02-08Shortcut key o-k, and then you can add layers, there are two kinds, one is the same as the top layer, which can be routed and poured copper.
The other is plane, which is a negative layer, where there is no copper, and where there is no scribing, there is copper foil, which is specially used for power supply layer and formation.
Top Solder Mask, Scribing or Fill will remove the solder mask (green oil) Top Paste Stencil leakage solder paste layer This layer generally does not need to be bothered, and the pad automatically has a dolder and paste
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Anonymous users2024-02-07When designing the PCB, consider the circuit layer, the drilling layer, the outline layer, the solder mask layer, and the text layer. You can send the information to my mailbox, and I will hand it over to the project to help you evaluate:
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Anonymous users2024-02-06First of all, you need to explain what software you use. 99？dxp?pads？
Brother I'm the rhythm guitarist of the band I've been playing the piano for two and a half years now Here's what my former teacher taught me, and he's the best guitarist in the region: 1 First get familiar with the structure of the guitar ** It's the headstock, neck, case, fretboard, etc. 2 Recognize the characteristics of the piano Just like a basketball You have to slowly figure out the ball The guitar also needs a feel 3 There is a most basic and easiest exercise Chromatic connection, which we commonly call "climbing lattice" This exercise must be done well (improve the dexterity of the fingers of the left hand) 4 Next, you need to learn music theory knowledge 5 Then learn a few basic and dazzling in C major (c,,g, you can start learning songs after practicing these few and dazzling conversions (recommended sunny day, I really love you, lilac) You can play and sing a song for one hour a day at most a month and a half But I personally don't recommend you to learn this way My teacher pays attention to music theory Generally we use six lines to learn guitar But we use five lines of music Tone relationship should be learned very well In this way, there is no need to play songs in future practice He Xuan Xiang can make up his own How to play it is good Improvisation ability will be very strong My guitar teacher said to me: I can play and sing two songs, not to be able to play the guitar, and to be able to do whatever I want is called mastery of the guitar Otherwise, it is to be mastered by the guitar! >>>More
Do you mean you want to create a new account?
If you create a new account, then this account is blank, and there is no software and ** number. >>>More
Since it's inserted into the background item, don't worry.,It shouldn't be saved in the computer.,You right-click on the desktop-Properties-Background,Find that**and then click on the tour to find the file.,See if it's stored in**,If you have it, delete it.,If not, cancel the background item on OK.。
Friend, is she your first love, she is a girl with experience, you should know her character better, her character, the friend above is right, there are so many good girls in the world, you should not be her favorite, maybe she has been numb, and what you said is also very messy, I don't know how anxious you are, I can feel a little, to be honest, you are very immature, friend, it's yours, I don't care if you're in such a hurry, right, it's not yours, you can't get it in your life. >>>More