• July 02. 2021

Common Mode Chokes When we said a common mode choke, it means it was wound both line and neutural windings on a single core. Since the noise would be common mode noise usually, the way to lower (if not eliminate) the unwant noise frequencies is to use a common mode choke As below picture show us details of Common-Mode Signals Defined: Such signals can arise from one or more of the following source...

• August 19. 2021

Comparing round copper wire, flat copper wire with more excellent performance, higher current ( unit current density reach 1.5~2.0 times) & smaller volume (0.5~1.0 times). Lower DC resistance, extremely small capacitance distribution, perfect heat dissipation. Closed magnetic circuit design, small magnetic leakage, stable impedance balance, good conducted radiation effect and EMI effect. Autom...

• October 26. 2021

During EMC power supply circuit design, common-mode interference is the most difficulties encountered, common mode inductor is one of the major methods on solving interference signals. Here let's talk about the basic principles of solving EMC artifacts from design plan in this way. A common mode inductance, is wound both line and neutural windings on a single core. While the magnetic flux in ...

• November 22. 2021

As we know, the inductance value will influence inductors application, today let’s talk about how to select an inductors based on inductance value. During the inductance is almost not stable during the entire working period of the components,  understand the effective value scope is particularly important. Thus, you should know your power circuit's inductance scope clearly. For inductors in p...

• April 15. 2022

Toroidal common mode choke for EMI suppression Chokes for EMC filters We plan use them before LED constant voltage 12V supply. Inductance 10mH or higher Rated current 1.5A Rated voltage 250VAC Insulation breakdown test (winding to winding) 60 sec @  1500VAC Design- horizontal PCB mount, through hole. Dimensions  must not exceed: 28*18-12cm, width and depth - 35mm   Main Application:...

• May 27. 2022

With excellent technology support,Coilcore factory have strong ability to produce Commond Mode Choke coils, quality equal to Janpan MetalGlass enterprise's Standard，following 4 Series details description: 1). FT-3KMF4627H Seires (Equel to Coilcore's NT---G Series) FT-3KM Series Commom Mode Choke used in Single Phase, Three Phase Electronical application. 2).FT-3K50T Series ( Equel T...

• May 31. 2022

The four-phase common mode choke is a four-terminal device, which founded by a nanocrystalline magnetic toroidal core as a common mode interference suppression device, four sets same size, same turns numbers coils wound symmetrically. When the common mode current flows, the magnetic flux in the magnetic ring superimposes each other, resulting in a considerable inductance, which has a suppressing e...

• May 21. 2024

In switching power supplies, there are two common types of noise: common mode noise and differential mode noise. The noise with the same path as the input signal is called differential mode noise, while the noise from ground to output with the same phase is called common mode noise. Common mode inductance can suppress common mode noise and improve signal quality through filtering. As for power lin...