What is the function of strong magnetic jammer?

The function of strong magnetic jammer is to reduce the overall signal-to-noise ratio of radiation leakage information by increasing electromagnetic noise, and increase the difficulty of cracking and recovering radiation information after it is intercepted, so as to achieve the purpose of "covering up" the real information. Electromagnetic jammer generally refers to electromagnetic interference filter. Electromagnetic interference filter, also known as EMI filter, is an electronic circuit device used to suppress electromagnetic interference, especially noise in power lines or control signal lines. The function of electromagnetic interference filter is to prevent the noise generated inside the electronic equipment from leaking out, and at the same time prevent the noise generated by the external AC line of the electronic equipment from entering the equipment. Electromagnetic interference filters usually consist of a network of passive electronic components, including capacitors and inductors that form LC circuits. Because the frequency of harmful electromagnetic interference is much higher than the normal signal frequency, the working principle of electromagnetic interference filter is to selectively block or shunt harmful high frequency. Basically, the induction part of the electromagnetic interference filter is designed as a low-pass device, which allows the frequency of the AC line to pass, and is also a high-frequency cut-off device. Other parts of the EMI filter use capacitors to shunt or shunt harmful high-frequency noise, so that these harmful high-frequency noises cannot reach the sensitive circuit. In this way, the EMI filter significantly reduces or attenuates all harmful noise signals that will enter or leave the protected electronic equipment.