tell about the basic principles of digital techniques

Most equipment of today contains digital circuits. The trend in today’s electronic devices is faster, smaller, and digital rather than analog. The farther away you get from the source or the farther down the design chain you are, the more difficult and expensive it is to mitigate the problems. Remember, it is always more efficient and less expensive to deal with EMI at its source.

Not only to assure proper operation, but to meet the various mandatory EMC requirements imposed by legislation around the world.ĮMI can simply be a nuisance such as static on a radio, or it can manifest itself as dangerous problems such as interference with aircraft control systems, automotive safety systems, or medical devices. The goal of all electronic designers is to achieve EMC (Electromagnetic Compatibility) in their designs. In electronic components, devices and systems, EMI can adversely affect their performance. What is EMI?ĮMI (Electromagnetic Interference) is a process by which disruptive electromagnetic energy is transmitted from one electronic device to another via radiated or conducted paths, or both.

Various shielding materials and their uses will be discussed. The article will look into what EMI is and how to design to control it using shielding in conjunction with proper design. This article will discuss the latter, but the other factors cannot and will not be ignored or given insufficient priority. A complete EMC program consists of proper filtering, grounding and shielding. This is completed early on in the program to allow for an efficient design in keeping the cost of dealing with EMI as low as possible. This program consists of identifying the “suspect” components and circuits that may cause or be susceptible to EMI. Essentially, all these devices cannot meet these mandatory requirements or they may cause interference to other devices or receive interference causing susceptibility problems without a proper program of EMI control. They are placed in nonconductive plastic cases providing no shielding. Many devices operate at high frequencies and are very small.

Today’s electrical and electronic devices are subject to mandatory EMC requirements throughout the world.

Tell about the basic principles of digital techniques