Are you given a list of parts by the technical team or a customer and when you read through it you wonder what it is you’re buying? How often do suppliers come back with alternatives and give you technical information that you don’t quite understand. In this blog we will take a look at the basics of what Ferrite is and some of the applications it can be used in.
Ferrite Lapping is a process used to remove material from the surface of a workpiece, which is beneficial for creating a smooth finish after machining (removing any grooves or indentations). By creating a flat surface finish, Ferrite Cores can attain a tighter mating which increases AL value.
The automotive industry is huge and the technology involved is constantly evolving from the initial “Benz Patent-Motorwagen” first presented in 1886 to the modern day Tesla Model 3 - a lot has happened and the technology involved is significantly different.
Ferrite sheets provide the benefits of traditional soft-magnetic materials whilst providing far more flexibility and versatility, freeing you from the typical mechanical constraints of Ferrite cores. Typically well suited for RFID and EMC protection due to its flexible nature and minimal material thickness (typically less than 0.2mm), Ferrite sheets can also improve the efficiency of wireless power transfer.
As industry evolves and has increasing demands on performance and speed of electronic systems whilst simultaneously reducing costs, these requirements are most noticeable when looking at power transmission. As technology advances a simple solution is actually the answer, using wiring harnesses is becoming a thing of the past and the use of busbars is paving the way for the future of lower cost and higher reliability.
Ferrite cores and single air gaps are very common as this technique of a single gap is able to delay the core saturation and as a results increase the cores performance. However its not all good as these relatively large single gaps cause higher fringing flux which will lead to additional copper losses in the windings, especially when operating at high frequencies. Now single gaps aren’t bad by any means as the pros out way the cons, however can we improve this technique even further and reduce the cons?