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Impulse Noise Simulators Overview

Product Overview (High Frequency Conducted Noise Simulator)  

High-frequency noise with a quick rise may occur accidentally due to the release of an inductive load such as discharge between the contacts of a switching device or the arc discharge generated from an electronic motor.
These noises travel through the power supply line and directly invade the electronic device, or guide and invade the signal lines that run close / parallel, and are combined with the circuit or board pattern of the electronic device to reflect.
It may cause resonance, amplification, etc., and cause the IC inside the electronic device to malfunction.

The INS series and FNS series of the NoiseKen are testers for simulating and generating this type of noise to evaluate the resistance and performance of electronic devices.
The FNS series complies with the IEC 61000-4-4 EFT/B test standardized by the IEC (International Electrotechnical Commission).
For the INS series, several guidelines such as NECA (Japan Electrical Manufacturers Association) and JEMA (Japan Electrical Manufacturers' Association) have been issued.

Both are tests that give high-frequency noise to the power line and signal line.
In the case of the FNS EFT/B test, noise coupling from the parallel cables shown in Fig. 1 is assumed, so the standard requirements also specify only common mode coupling. However, in reality, in addition to the case where noise is induced and coupled between cables as shown in Fig. 2, noise generated between lines such as discharge phenomenon at contacts in equipment and switching noise conducts the cable directly. Gives normal mode noise between the EUT lines.
EFT/B noise simulates the showering noise that actually occurs at the contacts of the inductive load.
But impulse noise has a frequency component close to the ESD (electrostatic discharge) region using an artificial pulse as a noise source. In addition to the normal mode, normal application that applies noise between arbitrary lines can also be performed.
Optimal noise evaluation can be performed as a countermeasure against troubles caused by noise in the market.

Impulse Noise Simulator INS-S220

 


EMC-239