The first floor; The second floor
1, the energy is mainly spent on learning schematic tools and PCB tools;
2. I am mainly worried about whether the PCB line is not working well, and I am very nervous, fearing that there will be problems with the line;
3, for the circuit principle, there is no time and energy to pay attention to it, generally copying other people's circuits, preferring books with case circuits;
4.PCB is mainly concerned with whether wires can be connected, and there is no clear concept about signal integrity and the length and width of wires. Can control the design of low-speed circuit. Second floor.
1, familiar with schematic diagram and PCB tools, skilled in operation;
2, began to pay attention to the circuit principle, the indicators of devices affect the circuit work;
3. Assign energy to study the data sheet.
4. Pay attention to the differences between different types of discrete devices, and you can think independently when choosing devices, instead of using any circuit to copy them. Third floor.
1 can control the risk of the circuit, and some problems that may affect the function will be considered in the schematic diagram and device selection. The problem was not solved when debugging the circuit.
2. When designing the circuit, we should consider the tolerance design and the imperfection of the device, such as the change of temperature, the influence of accuracy and the influence of voltage.
3. In PCB design, we should not only consider the wire connection, but also consider the influence of high speed, radio frequency and large current on circuit performance. Ability to analyze signal timing and impedance continuity.
4, will use analysis or simulation tools to solve the signal integrity problem. Fourth layer
1. Dimensions other than functionality can be considered: low cost, easy to process, easy to buy devices, easy to test, easy to diagnose problems online, not easy to be damaged by transportation or vibration, easy to maintain, and easy to maintain.
2. The designed products can meet the requirements of high reliability.
3. Be able to innovate on the basis of existing circuits or schemes and make innovative products; Or we can achieve technological progress in a certain technical field and make products with technological breakthroughs. Can apply for a patent with practical value, and effectively protect the innovation of its products.
4. Be able to design products that support mass delivery.
5. Be able to control the development and operation of very large-scale hardware systems.
1 Have industry thinking. Before the product is approved, we can consider the needs of application scenarios and macro-consider the market trends and trends.
2. It can predict the whole life cycle of products, and consider the product design, cost control, product positioning, labor input and distribution in the whole cycle from the aspects of technology realization, project management, supply chain and market demand.
3. Be able to get through the upstream and downstream, and be able to control suppliers and distributors.
An engineer is someone who can operate, design, manage and evaluate an engineering system.