Tips for connecting circuit diagrams, worth collecting
Connecting circuits is the only way to learn electronics. It is difficult for beginners to get started. I don't know where to start. It is very difficult to connect circuits. Many signals, interfaces, power supplies, and grounding are unclear. Circuit diagram to connect the circuit, what are the skills? Let's talk about it together, it's completely dry, it's worth collecting! The circuits that I came into contact with during my student days were used for various purposes, such as comprehensive inspection of various knowledge points, selection of good and bad students, etc. The questioners often designed the circuit diagrams to be extremely complicated, and often chose more complex mixed circuits. The key to wiring this type of circuit is to find the equipotential point, find out the current flow, find its equivalent circuit, and then connect the line accurately. Equivalent circuits can be found using several of Kirchhoff's theorems. (1) To connect the circuit diagram, it is necessary to have solid professional knowledge and experience. It is necessary to have the ability to control the circuit as a whole, understand the ins and outs and characteristics of all signals, such as how to connect the SCI communication signal, and know how to connect it if you are familiar with its input and output relationship. For example, the TX of the RS232 of the computer should be connected to the RX of the microcontroller , RX should be connected to the TX end of the single-chip microcomputer, in order to form a transceiver docking and realize communication. (2) It is best to be familiar with some commonly used circuit modules, such as communication modules (RS232, R2485, USB, CAN, etc.), external expansion RAM, EEPROM, etc., SPI peripheral circuits, such as SPI interface ADC chip/DAC chip, SCI communication expansion, LCD video screen display module circuit, digital tube display circuit, etc. After mastering the commonly used circuit modules, it is much easier to design the circuit, and the used parts can be slightly modified. (3) When connecting the schematic diagram, unless you are very clear about all the signals of the entire principle, try to use network labels as little as possible. Using network labels is easy to make mistakes and inconvenient to find. Residential electricity connection units include lamps, air conditioners, switches, sockets, etc. Civil appliances are generally connected in parallel, including sockets are connected in parallel between the live wire and the neutral wire. The switch is the function of on and off the circuit, so it should be connected in series in the circuit, and the standard connection method is that the switch should control the live wire. The household electricity consumption is generally divided into several sub-circuits according to the room or function, which are controlled by air switches respectively. The incoming line of the sub-circuit air switch comes from the total household air switch. In order to be able to skillfully follow the wiring diagrams in industrial circuits, you must first be able to read the diagrams. Compared with civil circuits, industrial circuits generally strictly abide by industry standards. Therefore, as long as you have a clear understanding of industry standards, you can naturally read industrial circuit diagrams and get started with wiring. Wuxi Doton Power , http://www.dotonpower.com
