Noise Filter- EMI Filter

Noise filter is an electromagnetic interface device used to eliminate interference within signal lines or power lines. The noise filter eliminates the signal interference generated by the device itself or external factors and helps to protect the device against electromagnetic signals. Many electronic devices have EMI filter , either as a separate device or as embedded in the circuit. The noise filter is such that it reduces electronic frequencies that may interfere with other devices

What is a noise filter or EMI filter?

Noise is defined as an electrical distortion with a high frequency and waveform. This noise includes unwanted and disturbing voltages and currents that are generated by motors, office equipment, industrial equipment, etc.

Noise can be divided into three types: line-to-neutral, line-to-ground, and neutral-to-ground. Line-to-neutral noise is called common mode, and Line to Ground/Neutral to Ground is called common mode.

To remove these noises from the device, a noise filter or EMI filter (electrical noise filter) is used, which has two types: single-phase and three-phase.

Types of noise filters:

The noise filter or electrical noise filter is provided as a single-phase noise filter, three-phase noise filter, and EMI noise filter.

A noise filter is an electromagnetic interface device that is used to eliminate interference within signal lines or power lines.

Noise filter (noise filter) eliminates signal interference caused by the device itself or external factors and helps the device to be immune to electromagnetic signals.

Therefore, noise filter (EMI / RFI) prevents unwanted voltages and currents and interference generated by motors, office and office equipment, industrial equipment.

Many electronic devices have an input power filter that is used either as a separate device or as an embedded device in the circuit. The output power filter also works by reducing electronic frequencies that may interfere with other devices.

Noise filter function:

Home power noise filter is responsible for filtering and eliminating high-frequency noise and sudden voltage fluctuations that may damage electronic devices and sensitive home appliances. This noise can cause the following problems:

Reduced sound or image quality: In audio and video systems such as televisions and home theaters.

Computer system failures or crashes: Electrical noise can cause software to crash or digital systems to malfunction.

Higher energy consumption: Power disturbances can cause increased energy consumption in electrical appliances.

Reduced device life: Continuous noise and voltage fluctuations can gradually reduce the life of devices.