Press the Enter key or click the Search Icon to get general search results 2. Click a suggested result to go directly to that page 3. Click Search to get general search results based on this suggestion 4. If a product fails EMC testing, hardware modifications are required, project schedules suffer, and extra costs result from repeated testing on the new hardware. Spending a few minutes, or hours, simulating the protection circuitry in LTspice helps to avoid expensive hardware respins due to EMC failures.
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Electromagnetic interference EMI , also called radio-frequency interference RFI when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. The disturbance may degrade the performance of the circuit or even stop it from functioning. In the case of a data path, these effects can range from an increase in error rate to a total loss of the data.
Both man-made and natural sources generate changing electrical currents and voltages that can cause EMI: ignition systems, cellular network of mobile phones, lightning, solar flares, and auroras. EMI frequently affects AM radios. It can also affect mobile phones, FM radios, and televisions, as well as observations for radio astronomy and atmospheric science.
Related Research Articles The amplitude of a periodic variable is a measure of its change over a single period. In older texts the phase is sometimes called the amplitude. Conformance testing — an element of conformity assessment, and also known as compliance testing, or type testing — is testing or other activities that determine whether a process, product, or service complies with the requirements of a specification, technical standard, contract, or regulation.
Testing is often either logical testing or physical testing. The test procedures may involve other criteria from mathematical testing or chemical testing. Beyond simple conformance, other requirements for efficiency, interoperability or compliance may apply.
Conformance testing is performed by an accredited independent organization, which can sometimes be the author of the standard. When testing is accompanied by Certification, the products or services may then be advertised as being certified in compliance with the referred technical standard. A Controller Area Network is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer.
It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper, but is also used in many other contexts. When the voltage in a circuit or part of it is raised above its upper design limit, this is known as overvoltage. The conditions may be hazardous. Depending on its duration, the overvoltage event can be transient—a voltage spike—or permanent, leading to a power surge.
In electronics and telecommunication, coupling is the desirable or undesirable transfer of energy from one medium, such as a metallic wire or an optical fiber, to another medium. A quasi-peak detector is a type of electronic detector or rectifier. Quasi-peak detectors for specific purposes have usually been standardized with mathematically precisely defined dynamic characteristics of attack time, integration time, and decay time or fall-back time.
In telecommunication, a measuring receiver or measurement receiver is a calibrated laboratory-grade radio receiver designed to measure the characteristics of radio signals.
The parameters of such receivers can usually be adjusted over a much wider range of values than is the case with other radio receivers. Their circuitry is optimized for stability and to enable calibration and reproducible results. Some measurement receivers also have especially robust input circuits that can survive brief impulses of more than V, as they can occur during measurements of radio signals on power lines and other conductors.
When writing firmware for an embedded system, immunity-aware programming refers to programming techniques which improve the tolerance of transient errors in the program counter or other modules of a program that would otherwise lead to failure. Transient errors are typically caused by single event upsets, insufficient power, or by strong electromagnetic signals transmitted by some other "source" device. The year-old Society has members and chapters in nearly every country throughout the world.
As an active entity within the IEEE, benefits are provided to members as detailed below. These simulators are used in special electromagnetic compatibility EMC laboratories. ESD pulses are fast, high-voltage pulses created when two objects with different electrical charges come into close proximity or contact.
Recreating them in a test environment helps to verify that the device under test is immune to static electricity discharges. An electromagnetic pulse EMP , also sometimes called a transient electromagnetic disturbance, is a short burst of electromagnetic energy. The European equivalent of the standard is called EN The current version of the IEC standard is the second edition dated The basic standards are usually called by product or family specific standards, which use the these basic standards as a common reference.
Flicker is a directly visible change in brightness of a light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply or incompatibility with an external dimmer. The current third version of this standard replaces the second version