What is a line filter?
Line filter is an electronic device that is part of many appliances and machines driven by electricity. Its purpose is to reduce, remove or divert electromagnetic interference (EMI) or radio-frequency interference (RFI). Any electrical equipment can generate an electromagnetic field. Many devices can pick up these fields and create interference with radio frequencies used by communication equipment. The line filter removes this interference, allowing you to transmit a cleaner signal.
Communication devices such as TVs, phones and radios work with transformation of sound and visual information into electronic signals. These signals are then transferred to the reception of devices that convert them back to understandable communication. While in electronic form these signals are part of a wider energy field known as an electromagnetic spectrum. All electronic devices, including electric lines, also issue electromagnetic fields as a result of their normal functioning. To the separation of theseRandom electromagnetic signals must be used a line filter. In modern times, there will be any place, among other things, more electrical equipment, including computers, kitchen appliances and electric tools. Any of these machines can create electromagnetic interference. Most nations have regulations limiting the amount of interference that the device can create. Examination of the device often reveals a notification describing the relevant regulations.
Even a device that is not connected directly to the power line, such as a mobile phone, is still connected to the internal battery. Meanwhile, the signal that reaches the phone is often transmitted by telephone lines before achieving the aura of the transmitter. Any of these energy sources or lines will generate electromagnetic fields that can create interference. The most common type of line filter is used to prevent interference from your own power supply connection.Another type prevents interference from external power plants or other devices that may be nearby.
Line filter is usually a type of electronic component called a capacitor. The capacitor is a passive electronic circuit built into a device consisting of wires separated by the insulator. The line filter capacitor is designed to allow the desired signal to pass unlimited and at the same time recognize the interfering signal and stop it. Often, this interfering signal turns into the "soil" of the device where it is harmlessly dispersed. If the line filter does not work or is not present, the interference may be detected as visual or hearing static, that if it is serious enough, the communication signal may completely disrupt.