Posted by Timothy Harvard , on Sep, 2015
The EMI suppression filter is a type of electronic component that offers suppression from electromagnetic noise created by electronic devices. It is typically used along with other types of protection and shields. The filter is designed to only remove and extract component’s that can create electromagnetic noise from various electric currents, which have been created through the wiring.
Electromagnetic Noise Interference
When an electronic device receives a stronger electromagnetic wave, there may be unwanted electric currents induced, which can create interference with the desired operations. When the energy that is applied from the exterior is too powerful, then the electronic device in question can become damaged. Even when the energy applied is small, if it has been mixed with radio waves that are used for communication and broadcasting, then a loss of reception, disrupted video and abnormal noise may occur where there are weak radio waves. This is where EMI suppression filters come in.
The noise created can interfere with a number of different electronic devices. There is also a variation in the source of the noise. Noise regulations have been established to ensure that electronic devices can be used securely. The electronic device in question can be the source, or the victim, of this noise.
Noise Suppression Methods
Three factors create noise interference transmission path, victim, and the source of the noise. When one of these factors is eliminated, often with the help of EMI suppression, then the noise interference can also be eliminated.
What must first be established is if you are able to take action for the victim or origin side of the noise. If you do not use digital circuits, transmitters, or switching power supplies, then the noise that is created by electronic devices is going to be extremely small. In most cases, this is when the EMI suppression will be sufficient in reducing the noise and making the device usable without issues.
There are a number of modern phones that now come designed with a type of EMI suppression filter present. This helps to ensure that the device will work properly and without issue at all times. Taking a bit of time to learn more about this can be beneficial in minimizing noise interference in other devices and electrical components in your home. While this may seem complicated, the fact is the EMI suppression filter can be extremely beneficial for a number of applications and needs.