Anti-jamming assembled magnetic electromagnetic compatibility (Electromagnetic Compatibility) abbreviation EMC refers to an electronic equipment does not interfere with other equipment, while not under the influence of other devices. We are familiar with the safety and electromagnetic compatibility, is one of the most important indicators of product quality. Security relating to persons and property, and electromagnetic compatibility are related to personal safety and environmental protection.

Interaction between electromagnetic wave and electronic components, resulting in interference phenomena, known as EMI (Electromagnetic Interference). For example, common on the TV screen "Snowflake" indicates received signal is disturbed.

How did EMI protection

EMC design of general principles:

EMC design should be part of any comprehensive design of electronic devices and systems. It than trying to bring the product to EMC's other methods more cost savings. EMC design techniques include: electromagnetic shielding, circuit filter technology and should include special attention to grounding grounding design of component overlap.

EMC recommended method of optimum design of devices and systems. This is a pyramid shape.

First of all, excellent EMC design is the basis of good electrical and mechanical application of design principles. These include reliability, such as design specifications meet the acceptable tolerances, good Assembly method and test technology under development.

In General, the driving device of today's electronic devices to be mounted on the PCB. These devices have the potential sources of interference and electromagnetic energy-sensitive components and circuits. Therefore, the PCB design of EMC in EMC design is the next most important issue. Location of active elements, printed line alignment, impedance matching, grounding design and filtering circuits shall be taken into account in the EMC design. Some PCB components and shielding is needed.

Once again, internal cable is generally used to connect PCB or other internal components. Therefore, including wiring and internal EMC shielding design for any given device is very important for the overall EMC.

Within the EMC design of PCB and cable design is complete, should pay particular attention to the case of shield design and all gaps, perforation and processing method of cable through hole.

Finally, you should also focus on power and other cables for input and output filtering.

In General, the EMI Shield is a systematic project, from product design and development stages that EMI needs to be through to the end. However, due to various reasons, high-frequency circuits is difficult to achieve in the PCB design phase that resolve EMI problems, are needed to shield the casing for the EMI-proof effect.