Electromagnetic interference and compatibility, which is one of the important concepts used in electrical and electronics engineering, is encountered in many areas, especially circuit design. There are several tests on these concepts, abbreviated as EMC. What is EMC? What are the effects?
The EMC test aims to determine the relationship between the effects of electrical and electronic devices during operation and the degradation of the devices. Although we are not aware of many in daily life, we face this situation. Mobile phones affect the vehicle's systems, such as the distortion of the image on the computer screens and the speaker while talking to the mobile phone. Many technological tools cause magnetic distortion.
In this period of continuous technological advancement, EMC testing has become a necessity in the modern world. Particularly by entering the period of what we call the Internet of objects, non-intelligent device or device that does not connect to the Internet, there is almost no risk of these devices interfere with each other and the devices become more susceptible to effects. For this reason, EMC compliance in modern devices has become an important criterion for the design and development stages.
The EMC Test is also known as the Electromagnetic Compatibility Test.
The EMC tests used today are water-like;
The following 3 detector shape is used during the test; Peak Detector: records the highest level of a signal that changes over time. Average Detector: records the average of a time-varying signal over a period of time. Quasipeak Detector: records the amplitude of the signal and the frequency of repetition over a period of time.
In the emission tests, the levels of the electromagnetic waves emitted by the device to both the cable and the air environment are measured. In the other tests, the immunity tests are aimed to determine whether the device is affected by the ambient magnetic fields and if so, the level of the device. All measurements are carried out in specially insulated semi- or non-reflective rooms which are coated with electromagnetic wave absorbing materials.
With the EMC tests carried out both before and after the devices are placed on the market, all the electronic devices we use in our environment are prevented from being damaged both to each other and to other living things around.
4 is used in all tests.
► Screened Room
► Semi-Reflective Room
► Fully Reflected Room
► Open Field Test Area
Emission (Electromagnetic Interference)
Radiation magnetic emission (measurement of electromagnetic wave radiation)
Conducted absorption (measurement of interference wave voltage)
Power disturbance (measurement of interference wave power)
Measurement of smooth non-continuous brittle interference waves
Low frequency mains interference waves
Immunity (Electromagnetic Interference Immunity)
Feminists in Implus form: Discharge of Static Electricity Electrostatic Discharge, Tension pulses in conductors
Feminists in continuous or implant form: High frequency effect through radiation, High frequency effect through conductors, High frequency effect through 50-Hz-Magnetic field
Other Phonemes - Voltage dips & Interrupts such as overvoltage splashes, voltage interruptions