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A line filter (aka EMC filter, EMI filter, RFI filter) is an electronic filter that is placed between the mains electricity input and internal circuitry of electronic equipment to attenuate conducted radio frequencies radio frequency interference (RFI), also known as electromagnetic interference (EMI). [1]
Switching action of electrical circuitry, including inductive loads such as relays, solenoids, or electric motors. Power line surges/pulses; Electrostatic discharge (ESD), as a result of two charged objects coming into close proximity or contact. Lightning electromagnetic pulse (LEMP), although typically a short series of pulses.
Electromagnetic compatibility (EMC) is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage to ...
CISPR is the acronym of Comité International Spécial des Perturbations Radio, [1] or the International Special Committee for Radio Protection of IEC. CISPR Standards aim to the protection of radio reception in the range 9 kHz to 400 GHz from interference caused by operation of electrical or electronic appliances and systems in the electromagnetic environment.
MDT – modular formation dynamic tester, a tool used to get formation pressure in the hole (not borehole pressure which the PWD does). MDT could be run on Wireline or on the Drill Pipe; MDR – mud damage removal (acid bullheading) MEA – monoethanolamine; MEG – monoethylene glycol; MEIC – Mechanical Electrical Instrumentation Commission
EPRI—Electric Power Research Institute (US) EPSA—Electric Power Supply Association; EQR—Electric Quarterly Report; ERA—Economic Regulatory Administration (part of United States Department of Energy; ERCOT—Electric Reliability Council of Texas, Inc, a regional transmission organization. (US)
A transient electrical voltage higher than normal appearing on an electrical supply. voltage-to-current converter A circuit that produces an output current proportional to an input voltage. volt-ampere The unit of apparent power in an AC circuit. voltmeter An instrument for measuring potential difference.
These chokes are useful for suppression of electromagnetic interference (EMI) and radio frequency interference (RFI) frequently introduced on high current wires such as on power supply lines, which may cause unwanted operation. Reducing this noise is frequently done by using a common mode choke—two parallel coil windings on a single core.