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What is EMC Testing for IoT/Wireless Devices?

EMC Testing for Printed Circuit Boards (PCBs)

Editorial Team - EMC Directory

May 23, 2023

EMC, or electromagnetic compatibility, refers to a printed circuit board's ability to function properly within an electromagnetic environment without generating electromagnetic or radio frequency interference in nearby devices. EMI can negatively affect system performance when the operating region of a device deviates from the defined standards or conditions. EMC ensures that the PCB is immune...read more

What is a TEM cell?

Editorial Team - EMC Directory

Apr 25, 2023

Figure 1: TEM cell geometry (Open type TEM cell shown)A TEM cell (Transverse electromagnetic cell) is a kind of test chamber used to perform EMC (electromagnetic compatibility) or EMI (electromagnetic interference) testing of small-size electronic products such as wireless pagers, receivers, portable phones, ICs, etc. It is also used for the calibration of RF probes and for biomedical experiments....read more

What is Power Line Transient?

Editorial Team - EMC Directory

May 31, 2023

Figure: Understanding transientsA power line transient (electrical transient) is a temporary sudden increase in voltage and/or current on an electrical power line or electrical system that can disturb or damage the electrical & electronic products connected (& near) to the power lines. It has the potential to impact the AC and DC systems. The electrical transients can also be propagated vi...read more

What is Inductive Coupling?

Editorial Team - EMC Directory

Apr 21, 2023

Inductive coupling occurs when there is a change in magnetic fields around a conductor, which induces an unwanted voltage or current in an adjacent conductor. This can happen even if the two conductors are not physically touching. Inductive coupling can be mitigated by using magnetic shielding materials, separating the conductors, and orienting them at right angles to each other.Mutual inductive c...read more

What is Conductive Coupling?

Editorial Team - EMC Directory

Apr 21, 2023

Conductive coupling occurs when two conductors come into direct contact or are connected by a conductive material such as metal. In this case, unwanted electrical signals can be transferred from one conductor to the other, resulting in interference. Conductive coupling can be mitigated by using shielding materials and proper grounding techniques.Capacitive coupling: Capacitive coupling occurs when...read more

EMC Testing for Automotive

Editorial Team - EMC Directory

Apr 21, 2023

EMC testing for automotive electronics is necessary to ensure that the electronic systems in vehicles operate correctly and safely without causing any interference with other systems or external sources of electromagnetic radiation. Automotive electronics can be exposed to various electromagnetic fields from sources such as radio transmitters, power lines, and other electronic devices. These elect...read more

EMC testing for a Medical Device

Editorial Team - EMC Directory

Apr 21, 2023

EMC testing requirements for medical devices are defined by the International Electrotechnical Commission (IEC) in the IEC 60601-1-2 standard. The requirements apply to all medical electrical equipment and systems that operate in the frequency range of 0 Hz to 400 GHz and are intended for use in the diagnosis, treatment, or monitoring of patients.The EMC testing requirements for medical devices in...read more

What are Helmholtz Coils?

Editorial Team - EMC Directory

Apr 18, 2023

Helmholtz Coils:Helmholtz Coils is an arrangement that consists of a pair of identical circular coils placed parallel to each other and separated by a distance that is equal to the radius of each coil, generally used to produce accurately defined magnetic fields from DC to the upper end of the audio frequency range and beyond.Fig: Helmholtz CoilThe coils are wired in series such that the current f...read more

What is CISPR 31?

CISPR Standards

Editorial Team - EMC Directory

Apr 18, 2023

CISPR 31 is a technical report that covers the database on the characteristics of radio services. The database objective is to register those characteristics which are relevant/related to the derivation and specification of limits for disturbance emissions from electric and/or electronic equipment, systems, and installations. This information is used together with CISPR 16-4-4 by the committees re...read more

What is CISPR 18?

CISPR Standards

Editorial Team - EMC Directory

Apr 21, 2023

Understanding Radio Noise:Radio noise is the unwanted electromagnetic emission from electrical & electronic devices/systems while operating that can interfere with other radio communication systems.Radio noise can be emitted during the operation of the power system transmission and distribution facility (overhead lines, substations & associated equipment). The causes of radio noise emissio...read more

What is Conducted Susceptibility?

Immunity

Editorial Team - EMC Directory

Apr 12, 2023

Conducted susceptibility and immunity are essentially two important aspects of EMC Testing. Conducted susceptibility refers to the ability of electronic equipment to withstand electromagnetic interference that is coupled through the power or signal lines whereas Conducted Immunity, on the other hand, refers to the ability of electronic equipment to resist external electromagnetic interference that...read more

What is IEC 61000-6-3?

IEC Standards

Editorial Team - EMC Directory

Apr 17, 2023

The IEC 61000-6-3 is an EMC emission standard for equipment in residential environments that specifies the EMC emission requirements for electrical and electronic equipment intended for use in residential, commercial, and light-industrial environments. This generic EMC emission standard is to be used if NO applicable/relevant product or product family EMC emission standard is available.This EMC em...read more

What is IEC 61000-6-4?

IEC Standards

Editorial Team - EMC Directory

Apr 17, 2023

IEC 61000-6-4 is an EMC emission standard for equipment in industrial environments that specifies the EMC emission requirements for electrical and electronic equipment intended for use in industrial environments. This generic EMC emission standard is to be used if no applicable product or product family EMC emission standard is available.This EMC emission measurement standard specifies the EMI emi...read more

What is IEC 61000-6-8?

IEC Standards

Editorial Team - EMC Directory

Apr 17, 2023

The IEC 61000-6-8 is an EMC emission standard for professional equipment used in commercial and light-industrial locations. This EMC emission standard specifies the EMC emission requirements for electrical and electronic equipment intended for use in commercial and light-industrial locations/environments. This generic EMC emission standard is to be used if NO applicable/relevant product or product...read more

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