Magnetics Business & Technology - Summer 2018 - 22

RESEARCH & DEVELOPMENT

Fig. 13 Round Wire vs. Flat Wire
Fig. 14 Impedance Curve III
It can be very easy to tell from Table 4 that the flat wire offers the
highest impedance at the highest frequency of all the four comparison above.
Finally, let's do a comparison between the traditional T-core with
round wire vs rectangular core with flat wire.

Table 3 - Round Wire vs. Flat Wire
Fig. 13 shows two identical cores with round wire of 0.4mm diameter on the left, compared to flat wire of the same cross sectional
area on the right, with identical 48 turns. From Table 3, the electrical result shows the flat wire winding provides a little higher leakage inductance, but it also shows lower DC resistance (DCR) with
less than half of the parasitic capacitance. The SRF of flat wire is
more than double comparing to the round wire. The Fig. 14 impedance cures result shows a big jump in the SRF for flat wire comparing to the round wire. This tells that the flat wire will offer superior
noise suppression performance at higher frequency.

Table 4 - Data Result

22

Magnetics Business & Technology * Summer 2018

Fig. 15 Impedance Curve IV
The mechanical result shown in Table 5 indicates the area of the
flat wire common mode choke is much less than the T-core common mode chokes which can save almost 40% on the PC board
layout. It also has a lower profile to save about 25% of height.

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Table of Contents for the Digital Edition of Magnetics Business & Technology - Summer 2018

Magnetics Business & Technology - Summer 2018
Contents
Editor’s Choice
Magnetic Nanoparticles Leap from Lab Bench to Breast Cancer Clinical Trials
Safran, a Major Player in Plasma Propulsion, Finds Booming Market for its Hall Eff ect Thrusters
NASA Develops Hall-Eff ect Electric Propulsion to Thrust Exploration on into Deep Space
Airbus-built SES-12 Dual-mission Satellite Successfully Launched
Research & Development
Case Study
Product News
Industry News
Marketplace/ Advertising Index
Spontaneous Thoughts: Dysprosium 2.0
Magnetics Business & Technology - Summer 2018 - Magnetics Business & Technology - Summer 2018
Magnetics Business & Technology - Summer 2018 - Cover2
Magnetics Business & Technology - Summer 2018 - Contents
Magnetics Business & Technology - Summer 2018 - Editor’s Choice
Magnetics Business & Technology - Summer 2018 - 5
Magnetics Business & Technology - Summer 2018 - Magnetic Nanoparticles Leap from Lab Bench to Breast Cancer Clinical Trials
Magnetics Business & Technology - Summer 2018 - 7
Magnetics Business & Technology - Summer 2018 - Safran, a Major Player in Plasma Propulsion, Finds Booming Market for its Hall Eff ect Thrusters
Magnetics Business & Technology - Summer 2018 - 9
Magnetics Business & Technology - Summer 2018 - NASA Develops Hall-Eff ect Electric Propulsion to Thrust Exploration on into Deep Space
Magnetics Business & Technology - Summer 2018 - 11
Magnetics Business & Technology - Summer 2018 - Airbus-built SES-12 Dual-mission Satellite Successfully Launched
Magnetics Business & Technology - Summer 2018 - 13
Magnetics Business & Technology - Summer 2018 - Research & Development
Magnetics Business & Technology - Summer 2018 - 15
Magnetics Business & Technology - Summer 2018 - 16
Magnetics Business & Technology - Summer 2018 - 17
Magnetics Business & Technology - Summer 2018 - 18
Magnetics Business & Technology - Summer 2018 - 19
Magnetics Business & Technology - Summer 2018 - 20
Magnetics Business & Technology - Summer 2018 - 21
Magnetics Business & Technology - Summer 2018 - 22
Magnetics Business & Technology - Summer 2018 - 23
Magnetics Business & Technology - Summer 2018 - Case Study
Magnetics Business & Technology - Summer 2018 - 25
Magnetics Business & Technology - Summer 2018 - 26
Magnetics Business & Technology - Summer 2018 - 27
Magnetics Business & Technology - Summer 2018 - Product News
Magnetics Business & Technology - Summer 2018 - 29
Magnetics Business & Technology - Summer 2018 - Industry News
Magnetics Business & Technology - Summer 2018 - 31
Magnetics Business & Technology - Summer 2018 - Marketplace/ Advertising Index
Magnetics Business & Technology - Summer 2018 - 33
Magnetics Business & Technology - Summer 2018 - Spontaneous Thoughts: Dysprosium 2.0
Magnetics Business & Technology - Summer 2018 - Cover3
Magnetics Business & Technology - Summer 2018 - Cover4
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