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Additional resources for an introduction to magnetohydrodinamics
Such speciﬁcations are referred to as harmonized standards. Most CENELEC standards are derived from International Electro-Technical Committee (ITC) or CISPR standards—ITC for immunity standards and CISPR for emission standards. ’’ As new standards come into existence and existing standards are modiﬁed, as regularly happens, a transition period, usually of 2 years is speciﬁed in the standard. During the transition period, either the old standard or the new standard can be used to demonstrate compliance with the EMC directive.
The coupling channel consists of conduction on the motor leads and radiation from the leads. 32 ELECTROMAGNETIC COMPATIBILITY noise and then conduct it to another circuit. There it causes interference. The solution is to prevent the wire from picking up the noise or to remove the noise from it by ﬁltering before it interferes with the susceptible circuit. The major example in this category is noise conducted into a circuit on the power supply leads. If the designer of the circuit has no control over the power supply, or if other equipment is connected to the power supply, it becomes necessary to decouple or ﬁlter the noise from the wires before they enter the circuit.
3(u)). The Part 15 regulations have a twofold purpose: (1) to provide for the operation of low-power transmitters without a radio station license and (2) to control interference to authorized radio communications services that may be caused by equipment that emits radio-frequency energy or noise as a by-product to its operation. Digital electronics fall into the latter category. Part 15 is organized into six parts. Subpart A—General, Subpart B— Unintentional Radiators, Subpart C—Intentional Radiators, Subpart D— Unlicensed Personal Communications Devices, Subpart E—Unlicensed National Information Infrastructure Devices, and Subpart F—Ultra-Wideband Operation.
an introduction to magnetohydrodinamics by Davidson