Author: Xiaoyu, Typography: Xiaoyu
01 Chip to cover the flying wire
We got a chip, in fact, the core part of the chip is not as big as the chip, in order to facilitate the introduction of many pins, so it is packaged on the outside and another layer, common metal packages, plastic packages, ceramic packages, etc., most of the general consumption level with plastic packages, aerospace and high requirements of commercial metal packages or ceramic packages. If the outermost pin of the chip is broken, it is generally considered that the chip is "scrapped", but today I saw an S-level difficulty god operation, and even after the pin was broken, the plastic package was peeled off and flew out of the chip, let us quietly worship it.
Inside many chips is something like this:
02 TRRRRRRRRRS interface
The meaning of TRS is Tip (signal), Ring (signal), Sleeve (ground), respectively, representing the 3 contacts of this joint Its joint appearance is cylindrical shape, which represents the 3 contacts of this joint, the most common is the 3.5mm audio interface, and we commonly have up to 4 segments, ground, left and right channels, microphones.
However, don't make TRRRRRRRS as if it doesn't exist, the extended version is coming:
03 Beautiful burn pads
When you leave a burning pad on the PCB, is it either a row of vias, or a row of pads on the top or bottom floor for the programming program, in fact, it can be designed to be more beautiful, this is not, someone designed a "claw" burn pad, although there is no practical role, but there is still a new meaning to look at.
04 A capacitor that is so big
A 100000uF/80V capacitor, that is, 0.1F, see how big it is, and what is the largest capacitor that everyone has used?
05 Mobile magnet on PCB
Moving magnets on the PCB track, rolled out stepper motors, and finally derailed...
06 PCBs are like onions
When we design the PCB, there are many layers, the top layer, the bottom layer, the middle layer, the screen printing layer and so on, if we take special measures to pull away the different layers of the PCB, we will find that it is really like an onion, layer after layer, do you know what the following figure is from top to bottom?
07 2512 vs 01005
Do you all see the two resistors next to my coffee cup? Let me zoom in so you can see.
Sizes: 2512 and 01005, 1W and 1/32W
08 Some flying lines
The chip flying line is coming again, how do you like to fly so much, challenging yourself again and again.
09 Soldering iron that has been used for many years
What is it like to sleep with a soldering iron? What kind of mentality do people say this is?
There are also CPU throw pillows.
Article source | Between the chips author Xiaoyu
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