1, 3 or more connections, try to let the lines pass through the points in turn, easy to test, the line is as short as possible
2. Try not to put the wires between the pins, especially between and around the pins of the integrated circuit.
3. The lines between the different layers should not be parallel as much as possible to avoid the formation of actual capacitance.
4, the wiring is as straight as possible, or 45 degree fold line to avoid electromagnetic radiation.
5, the ground wire, power cord at least 10-15mil (for logic circuits).
6. Try to connect the paving lines together and increase the grounding area. Lines and lines are as neat as possible.
7. Pay attention to the uniform discharge of components for installation, plug-in and welding operations. The text is discharged in the current character layer, the position is reasonable, pay attention to the orientation, avoid being blocked, and easy to produce.
8, component emissions more considering the structure, the chip components have positive and negative should be packaged and finally marked to avoid space conflicts.
9, the current printed board can be used for 4-5mil wiring, but usually for 6mil line width, 8mil line spacing, 12/20mil pad. Wiring should take into account the effects of sinking current, etc.
10. The function block components should be put together as much as possible, and the components near the LCD such as zebra strips should not be too close.
11, the hole should be coated with green oil (set to a negative value).
12, it is best not to place the pad under the battery holder, empty, etc., PAD and VIL size is reasonable.
13. After the wiring is completed, carefully check whether each connection (including NETLABLE) is actually connected (available lighting method).
14. The oscillating circuit components should be as close as possible to the IC, and the oscillating circuit should be as far away as possible from the antenna and other susceptible areas. Place the ground pad under the crystal.
15. Consider many ways such as reinforcement and hollowing out components to avoid excessive radiation sources.
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Floating Ball Level Controller
The floating ball liquid level controller is composed of floating ball, plug rod, etc. It is installed on the top of the container through the connecting flange, and the floating ball floats on the liquid level according to the principle of equal volume of liquid. When the liquid level of the container changes, the floating ball also moves up and down. Due to the magnetic effect, the dry spring of the floating ball liquid level controller is magnetically attracted to change the liquid level position into an electrical signal, and the actual position of the liquid is digitally displayed through the display instrument, Floating ball liquid level controller to achieve remote detection and control of liquid level.
The floating ball liquid level controller is designed according to Archimedes' buoyancy principle. When the liquid level of the container changes, the floating ball also moves up and down. Due to the magnetic effect, the dry reed of the floating ball liquid level controller is magnetically attracted, so that the resistance in the sensor changes linearly, and then the converter converts the change of the resistance value into 4mA ~ 20mA standard DC signal output, Realize the remote detection and control of liquid level.
Floating Ball Level Controller,Liquid Level Controller,Alarm Level Measurement Controller,Floating Ball Liquid Level Measuring Controller
Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.jbcbyq.com