Howtosignalprocessing
- What is a noise filtering surge protector?
- What is common mode protection?
- How does the performance of any filter depend on the impedance seen at its terminal?
What is a noise filtering surge protector?
A Surge Suppressor, also known as a Surge Protector, is a device that is designed to protect computers and other electronic devices from damaging power surges and line noise common on AC, telephone/modem, network and coax lines.
What is common mode protection?
To claim “protection” against common-mode surge (neutral-to-ground surge), manufacturers divert all surges to the ground wire. However, as stated earlier, this procedure can lead to audio, video, and computer noise and reliability problems.
How does the performance of any filter depend on the impedance seen at its terminal?
A filter that works well in one situation can be poor in a different one, so we need at least a basic understanding of how filters work. Filters work by creating a discontinuity in the impedance seen by a signal travelling along a conductor. The greater the discontinuity, the greater the attenuation.
