Circuit design introduction, self-study can also be!
Circuit design is a necessary skill for electronic engineers, learn circuit design, amateurs can make simple electronic products by themselves, skilled to a certain extent, but also by doing some projects to increase an additional income, why not? Next, we will summarize the four stages of circuit design.
First, as a beginner, you must first have a certain basic knowledge of the circuit. We can go to the bookstore to buy two books to read, analog circuits and digital circuits, first learn some knowledge of mode electricity, understand some basic knowledge of the circuit, and understand the working principle of the transistor. Next, learn a digital knowledge, mainly to understand the principle and function of some basic digital circuits, because more complex circuits are composed of these basic circuits, we only need to understand the analysis of the line, know which is the amplifier circuit, which is the logic circuit.
Second, learn to draw circuit boards. Drawing board is the basic skill of circuit design, but also the biggest obstacle for beginners. Without the basics, let's teach you a quick start. First of all, we download a drawing board software on the Internet, suggest protell or AD, as long as you know one of them, and then use the other is basically no problem. After the software is installed, we will enter the drawing stage. Drawing is divided into two parts, schematic diagram and PCB. The schematic diagram is the components and the electrical connection, the components include the pins and the outline diagram, and the connected pins are connected when connected. After drawing the schematic diagram, you should also check the electrical rules and generate a netlist before you can import the PCB. Drawing PCB is the board we actually have to do, at this time, according to the size of the board, layout components, and then draw the line, of course, this process needs constant practice, which can make perfect.
Third, drawing the PCB, it is necessary to export the gerber file and give the circuit board manufacturer to produce, this process does not require our participation, and the manufacturer will finally create what we need according to the drawing.
Finally, it's patch and test. After the board is done, we have to weld the device with a soldering iron one by one, usually the chip pin is relatively dense, and we should pay attention to not virtual welding and short circuit when welding. After the board is welded, it is necessary to test the function to see whether the operation effect is the same as the design.