What knowledge and skills do you need to be a technician?

A technician doesn't need much technical knowledge. He is a management position, not a technical position.

The technical post is engineer, as follows

First, the basic conditions for becoming an electronic engineer:

1, education

First of all, education is a stepping stone. Now many units recruit inexperienced technicians, such as R&D assistant engineers, with at least a bachelor's degree. In fact, education and ability are not necessarily related. Among the engineers I know, there are many experts with low academic qualifications, even better than the skills of undergraduate and graduate students. But at present, this is the threshold of reality.

2. Have a strong curiosity

This is a necessary condition to become a master. I like new things, I like asking questions, and I like studying for fun. Those who muddle along, perfunctory, and just regard work as their rice bowls can't even master it, let alone master it. Curious people can work all night to solve a problem and then lie in bed thinking about the solution.

3. Be cautious and consider the problem comprehensively.

Technical work must not be sloppy, otherwise there will be many problems and endless future troubles. It even has a great impact on production and product quality, causing great economic losses to the company. Careless people can only be assistants.

4, doing things is to be a man, think twice before you act.

In daily work, I am modest and eager to learn, good at summing up and accumulating, loving helping others, not putting on airs, serious and responsible, and not afraid of power.

Second, how many things do electronic engineers need to be responsible for?

1, taking the power supply design requirements. Evaluate the cost and determine the feasible scheme.

2. According to the customer's quotation. Given the general component cost and production cost, a feasible circuit.

3. Schematic diagram. Determine the principle scheme of the selected power tube and transformer, which is the most stable, simplest and convenient for production.

4. According to the schematic diagram, design PCB according to the sample requirements or shell requirements given by customers.

5. According to the schematic diagram, assemble the appropriate components and adjust the electrical parameters. Let the product work normally under the minimum requirements.

6, load test, power reaches 80 formula, check the output waveform, voltage requirements, electromagnetic performance, power tube temperature, voltage stability, conversion efficiency. In this process, the parameters of electronic components are properly adjusted.

7. Strengthen testing. That is, ultra-negative voltage, short circuit, low voltage, overvoltage, strong temperature, impact resistance and other tests.

8. According to the samples, determine the accurate parameters of the schematic diagram, determine the orientation diagram and material diagram, and send them to the production department, warehouse keeper and merchandiser for small batch production of samples.

9. Strictly test the samples, all kinds of performance can be, and the salesman will send them to the customer for evaluation. Ok, we can mass-produce WeChat official account: Shenzhen LED Chamber of Commerce.

10. After the project is put into production, it will be tracked and improved, and delivered to customers with the best quality in the shortest time.

3. What software should an electronic engineer learn?

1, Office Series

2. Draw PCB software, such as AD, PADS and Protel99se.

3. Engineering calculation software, such as Mathcad.

4. Mechanical software, such as AutoCad.

4. What instruments should an electronic engineer use?

Multimeters, oscilloscopes, soldering irons, electronic loads, voltage regulators, bridges, withstand voltage instruments, surge generators, impact withstand voltage instruments, vibrators, high and low temperature boxes, conductors, thermal imagers, automatic testers, EFT group pulse generators, etc. Familiar with the performance of wave soldering, mounter, plug-in machine and automatic welding machine.

5. What knowledge should an electronic engineer know?

1, English, analog electricity, digital electricity, advanced mathematics, electromagnetism, circuit analysis, etc. Such as automatic control principle, software programming, data structure, basic chemistry and so on. Should also know. Structure, basic chemistry and some other knowledge.

2. Familiar with all components of switching power supply, such as resistors, capacitors, diodes, triodes, inductors, thermosensitive, pressure sensitive, field effect tubes, transformers, fuses, relays, switches, terminals, wires, integrated circuits, etc. The combination of various components is our basic circuit: permanent circuits such as amplification, filtering, isolation, signal source, voltage stabilization, comparison, current amplification and voltage amplification. Of course, I have to add some independent circuits that I have come up with. Able to read manuals provided by each component manufacturer, such as chip data sheet.

6. What professional indicators or standards should electronic engineers know?

Understand various indicators and standards related to test power supply: absolute voltage stabilization coefficient, power grid adjustment rate, voltage stability, load adjustment rate, output resistance, also known as equivalent internal resistance or internal resistance, maximum ripple voltage, ripple coefficient, ripple voltage suppression ratio, impulse current, overcurrent protection, overvoltage protection, output undervoltage protection, overheating protection, temperature drift and temperature coefficient, response time, distortion, noise, input noise, surge. Electrical safety requirements, power supply safety requirements, leakage current measurement, insulation resistance test, printed circuit board requirements, such as materials, transformer insulation, transformer dielectric strength, transformer insulation resistance, transformer humidity resistance, VDE's requirements for transformer temperature characteristics, UL, CSA, IEC, FCC, CCC, CQC, ce, conduction, radiation, low temperature, high temperature, constant damp heat, alternating damp heat, shock (.

7. What technologies should electronic engineers master?

Various topologies of switching power supply: RCC, buck, boost, buckboost, flyback, forward, push-pull, half-bridge and full-bridge.

Topology, analysis, control and design of active power factor correction

Topology and steady-state analysis of DC-DC power converter

Design of power level parameters of switching power supply

Control and dynamic analysis of switching power supply

Small signal analysis and design of switching power supply

Large signal analysis and design of switching power supply

Analysis and design of electromagnetic interference of switching power supply

Thermal analysis and design of switching power supply

Tolerance analysis and design of switching power supply

Various protection technologies of switching power supply

Synchronous rectification technology of switching power supply

Module current sharing control technology of switching power supply

Transformer winding finger

Optimization of power level parameters

Optimization of loop parameters

Optimization of auxiliary power supply parameters

Optimization of various protection circuits in power supply

Optimization of EMI filter circuit

Optimization of internal thermal environment of power supply

Optimization of other functional circuits of power supply (such as current sharing, synchronization, hot plug, remote compensation, etc.). )

Optimization of PCB layout and so on.

Trade-off between steady-state performance and dynamic performance

Trade-off between power density and reliability

The tradeoff between small signal performance and large signal performance.

Design compromise at high temperature and low temperature

A compromise between electrical and thermal properties.

Design compromise of key components