Products FAQs
Selected Category：Inductors (Coils) > Simulation and Circuit
For actual measurements of a noise filter using the common mode choke coils and the SPICE simulation, we apply a model using coupling coefficient k for the magnetic coupling characteristics of the common mode choke coils.
Here, we check the attenuation effect of normal mode noise in a filter circuit in a comparison of actual measurements and simulation for a noise filter using a common mode choke coil.
Here, we check the attenuation effect of common mode noise in a filter circuit that compares the actual measurements and simulations of a noise filter using a common mode choke coil.
When constructing equivalent circuits for common mode choke coils, the numerical value of the equivalent circuit is calculated mainly by performing measurements in three steps (STEPs 1 to 3).
This document explains the SPICE MODEL of the FW,FL-V series of common mode choke coils.
We adopted a new model concept to bring the frequency dependence of the impedance characteristics closer to measured values.
Noise generated in power supply circuits includes normal mode noise and common mode noise, with the direction of the magnetic field generated differing depending on the noise current.
Normal mode noise is a mode in which noise returns to the noise source from the positive side of the power supply via the negative side. Common mode noise is a mode in which noise with the same phase on the positive and negative sides of the power supply travels in the same direction and returns to the noise source via the ground.
On a Common Mode Choke Coil, the ratio of turns around the primary and secondary windings are equal(L1=L2), and the polarity of the windings (the direction of the windings) are the same.
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