Coupled with a steady development trend of automobile motor control technical, professional motor injection molding magnets has greatly increased, the total professional plastic magnetic mold output power ascending slowly, slowly expanding output power, prompting car radio waves in the office environment, increasing electromagnetic interference problem, and light damage in the routine work of the electronic equipment, Heavy damage to the corresponding electrical components. Therefore, the professional plastic magnetic components of automotive electronic equipment are paid more attention to, at this stage must choose to widely use ferrite core magnetic core for the improvement of electromagnetic induction technology of automotive machinery and equipment.

Source of electromagnetic interference

In the work of automotive electronic equipment, the diversity and instability of electromagnetic induction kinetic energy in the natural environment represent that the electromagnetic interference source suffered by the system software is very common. According to the origin of electromagnetic interference classification, can be divided into car electromagnetic interference, car body electrostatic interference and car electromagnetic interference

External electromagnetic interference (EMI) is the interference caused by various external electromagnetic induction to natural environment. Such disturbances exist in designated indoor Spaces or at particular times. Such as high-voltage power lines, high-voltage substations and high-power wireless communication transmitting station electromagnetic interference, and its lightning, sunspot radiation source electromagnetic interference, these. Other nearby electronic devices in the natural environment can also cause interference when working, such as cars in close proximity.

Car body static interference is related to both automobile and environmental factors. Because of the fast friction between the car body and the gas when the car is running, uneven static induction is produced on the car body. Electrostatic induction charging and discharging will disturb the current flow on the car body, and at the same time cause high frequency radiation source, and produce electromagnetic interference to the car electronic equipment.

Electromagnetic interference in the car

In-car electromagnetic interference (EMI) is the mutual interference in the operation of automotive electronic equipment, including the noise of electronic devices caused by electronic components.