Weak current College】 【hardware engineers start prerequisite knowledge】.

1. grasp the resistance changes of voltage and current, capacitance of charging and discharging characteristics, in particular its zero status response and the zero input response, Crystal diode and transistor's organizational structure, clear Crystal diode rectifier and voltage diode reverse breakdown characteristics, clear triode three-state conditions: due to saturation, zoom in.
2. back some typical circuit diagrams, such as: three-Terminal regulators circuits, the frequency rectifier circuit, MONOSTABLE circuit triggered and so on, do not think this is rote learning method, in fact, many circuit we verbally make out, but once you use the schematic diagram of the strokes, there is always so a little bit difficult.

3. find some small schematics to examine, in accordance with the principle of which make a real hardware, if you have a condition, you can test the correctness of the schematics, and make improvements;

4. There are some of the above, we will note the high-frequency circuit and the difference between low-frequency circuits, in particular, note the difference between components and high-frequency components and the range of low-frequency components, there are a high power circuit and low power circuit components differ, especially to learn to see the component parameters and parameter table provided by the manufacturers;

5. find a more exemplary principle figure of switching power supply, in particular discrete components designed circuit, the author believes learning electronics hardware, from the start with the fastest switching power supply, and why? because power application, almost every device can not be separated from power supply, do not think that the power of design is very simple, in fact, the power of design principles may be simple, but to design a safe power supply, can not be so easy, power supply design involves a wider surface, including magnetic components, power components, high-frequency rectifiers, over-voltage protection, over-current protection, EMI, EMC testing and design etc, if switching power supply can be mastered, electronic hardware technology has already started.

6. the learning design of magnetic components, in particular, switch transformer and filter inductance design.

7. familiar with the various certification in the field of electronics, such as: UL, CE, TUV, and so on, and learn about the certification program application process and testing requirements;

8. learn some microcontroller software design that does not require very well, but be sure to note the MCU control theory, see SCM minimum system principle and the principle of expansion;

9. learning circuit design tools, such as: PROTELL, PADS2000, POWERPCB, etc., at least to master two such design tools;

10. learn the hardware to the development environment, it is best to have the master design with you.