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    <author>
        <name>Neosid</name>
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    <title>Blog / Atom Feed</title>
    <id>https://neosid.de/loesungen-innovationen/wissensdatenbank/?sRss=1</id>
    <updated>2026-04-20T12:06:37+02:00</updated>
    
        <entry>
            <title type="text">6. Anwenderforum Passive Bauelemente</title>
            <id>https://neosid.de/loesungen-innovationen/wissensdatenbank/6.-anwenderforum-passive-bauelemente</id>
            <link href="https://neosid.de/loesungen-innovationen/wissensdatenbank/6.-anwenderforum-passive-bauelemente"/>
            <summary type="html">
                <![CDATA[
                
                                            Vortrag auf dem 6. Anwenderforum Passive Bauelemente von Matthias Höß, Leiter Entwicklung und Projektmanagement, bei der NEOSID Pemetzrieder GmbH + Co. KG
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 Am 29. Und 30.06.2021 fand das „6. Anwenderforum Passive Bauelemente“ statt. Die Veranstaltung wurde organisiert von der WEKA Fachmedien GmbH und wurde komplett Online durchgeführt. Anbei der Vortrag von Matthias Höß, Leiter Entwicklung und Projektmanagement, bei der NEOSID Pemetzrieder GmbH + Co. KG. 
  PDF-Download: &amp;nbsp; Vortrag auf dem 6. Anwenderforum Passive Bauelemente  
 &amp;nbsp; 
 Haben Sie weitere Fragen zu dem Vortrag? Oder interessieren Sie sich für Bauteile, die im Vortrag genannt oder gezeigt wurde? Dann rufen Sie uns an oder senden Sie uns Ihre Fragen über das  Kontaktformular . 
 &amp;nbsp; 
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            </content>

                            <updated>2021-06-29T00:00:00+02:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">Ferrites for sensor applicatons – design and properties</title>
            <id>https://neosid.de/loesungen-innovationen/wissensdatenbank/ferrites-for-sensor-applicatons-design-and-properties</id>
            <link href="https://neosid.de/loesungen-innovationen/wissensdatenbank/ferrites-for-sensor-applicatons-design-and-properties"/>
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                                            Vortrag von Dr. Aloys Foecker - November 2020
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 Topics 
 
    Common exploited properties of Ferrites      Forming fields      Shaping ferrites      Contacting coils       Permeability μ changes with     frequency   |   temperature    air gap   |   excitation level    DC bias/magnetic fields   |   mechanical forces       What do you need?      Wireless power and data transfer      Less common exploited properties of Ferrites    
 
 Properties and applications of Ferrites 1 
 
 
  “collecting” and shaping of magnetic fields  ➤ sensors, antennas, transponders 
  Increasing “inertia” of electric current  ➤ chokes, noise suppression, filters, delay lines 
  Increase magnetic coupling of conductors  ➤ transformers, converters, storage chokes, impedance matching 
 
 
 Antennas and Sensors 
 
   
 &amp;nbsp; 
 
 Metal detection and recognition 
 
      source: IFM  
  Inductive proximity switch:&amp;nbsp;  Directing and focussing magnetic field 
 
      source:&amp;nbsp; http://eddycation.de/   
  Non destructive Material testing:&amp;nbsp;  
 
 Material sorting (e.g. Coin recognition) 
 Material thickness (e.g. Coin recognition) 
 Crack detection and depth determination 
 Imaging of material faults 
 
 
 
 Dry pressing of ferrites 
 
   
 Cross-section through a sintered pot core 
 &amp;nbsp; 
 pressed part before sintering 
 &amp;nbsp; 
 powder column in the mould before pressing 
 &amp;nbsp; 
   
 &amp;nbsp;uneven densification ➤ strains and cracks, particularly at the lines where portions of different thicknesses meet 
 
 Crack formation in pressed ferrites 
 
   
 Density differences during powder pressing ➤&amp;nbsp;differing densification in thinner and thicker areas of the part can cause crack formation at the intersections 
 &amp;nbsp; 
    
 
 Examples for injection molded parts 
 
   
  Isotropic 3D-cube antenna 9x9x9mm  
 
 monolytic, hollow ferrite 
 high Q-factor, high sensitivity 
 reduction in material and weight 
 
 &amp;nbsp; 
  smallest customer specific designs  
 
 wall thickness ≥ 0,22mm, 
 volume ≥ 1mm3 
 tolerances down to +-1% 
 
 &amp;nbsp; 
  SMD transponder coils  
 
 high Q-factor, high sensitivity 
 high reliabilty in vibration und drop tests 
 
 
 Ferrite production at NEOSID 
 
 
 
  mixing oxides 
 main components Fe Mn Ni Zn 
 
  pre sintering 
 homogenization and formation of the ferrite structure 
 
  milling 
 creating a very fine powder 
 
  compounding 
 mixing ferrite powder and binder 
 
  injection moulding 
 1 to 28 cavities 
 
  barrel finishing 
 rounding edges, removing flash 
 
  sintering 
 in air or under controlled oxygen concentration 
 
  annealing 
 establishing an optimum domain structure 
 
  grinding 
 tight tolerance, flat surface, round, thread grinding, CNC milling of prototypes 
 
  coating 
 e.g. parylene, self-locking screw cores, metallization 
 
  Inspection 
 electrical, geometrical 
 
 
 
 
 Contacting Technologies 
 
 
   
  Wire wound  terminal 
 
 
   
  Metal pin  terminal 
 
 
   
  Metallized core  terminal 
 
 
 Common competitors Metallisations 
 
 
   
  Dipping  
 Dipping in silverpaste, burning in and plating 
 ➤ low quality factor caused by eddy currents in end faces 
 ➤ Nickel-Zink-Ferrite only 
 
 
   
  single layer PVD  
 selective deposition of e.g. silver 
 ➤ poor adhesion 
 ➤ dissolves during soldering, does not withstand thermocompression 
 
 
 Metallisation from NEOSID 
 
     
  3-layer PVD  selective deposition of 3 layers where whished for, no burning in 
 ➤ reduction of eddy currents 
 ➤ works on Manganese- and Nickel-Zink-Ferrite 
 ➤ good adhesion 
 ➤ withstands soldering and thermocompression 
     
 
 automated 100 % optical inspection 
 
      
 
 Soft magnetic Ferrites 
 
 
  NiZn-Ferrites  
 
 μi from 10 to 2.000 
 high Q between 0 and 100 MHz 
 large electrical resistance 
 higher Tc 
 sintering in air 
 
  MnZn-Ferrites  
 
 μi from 700 to 20.000 
 high Q between 0 and 1 MHz 
 small electrical resistance 
 lower Tc 
 sintering under controlled atmosphere only 
 
 
 
 Influence of Frequency 
 
   
 μ‘ = permeability μ‘‘ = losses 
 Q = μ‘/μ‘‘ 
 For lower losses (higher Q) at higher frequencies chose lower μ material 
 
 Influence of Temperature 
 
   
  Medium and small μi  
 
 Very small temperature drift 
 
   
  High μ  
 
 Almost linear temperature drift (can be compensated) 
 
 
 Very high μ materials 
 
 
   
  Very unstable μ  ➤ &amp;nbsp;troublesome compensation  
 
 
   
 Sources: TDK-Catalogue 
  Only for very low frequency applications  
 
 
 Influence of air gap 
 
   
  Air gap:  Fraction of magnetic path not running in ferrite material 
  μeff vs. % air gap for varying μi     
 &amp;nbsp; 
 Sensing Coils are mainly open magnetic circuits with a large air gaps (≈ 50% for a pot core). 
     source: IFM  
 The larger the air gap, the less difference in μeff remains between high and medium μ materials. 
 
 Influence of excitation level 
 
   
 Initial permeability μi is μ measured at low excitation levels (B &amp;lt; 0,5 mT) 
 μa changes at high excitation levels 
 With open magnetic circuits μeff &amp;lt;&amp;lt; μa 
 B = μeff*μo*H is rather small and sensors usually work in stable μ regime 
 
 Influence of DC-Bias and external Fields 
 
  Inductivity of transponder-Coil vs. DC-Current     
 Permeability decreases with application of 
 
 DC-bias 
 external magnetic fields 
 
 &amp;nbsp; 
 ferrites stay stable up to a certain level and than drop quite fast 
 Higher μ ferrites suffer earlier 
 Composites PFS4 and PFS9 drop earlier but slower 
 Composite Material PFS3 is extremely stable up to &amp;gt; 1000 mT 
 
 Impact of strong magnetic fields and excessive mechanical force 
 
 
  3 ferrite material classes  
 NiZn-ferrites F2a to F100b 
 
 Some impact, extremely slow recovery 
 complete recovery can be reached only through thermal annealing 
 a-Types (like F2a) are less sensitive 
 
 &amp;nbsp; 
 MnZn-ferrites F02 and F08 
 
 impact, but fast recovery 
 
 &amp;nbsp; 
 NiZn-ferrites F1ib, F1is, F5is and Composite Materials 
 
 hardly any impact 
 
 &amp;nbsp; 
 
 
  Composite materials  
 
 Hardly any impact 
 distributed air gap ➤ lower permeability 
 Saturation flux density &amp;gt; 1000 mT for PFS3 
 Tighter mechanical tolerances 
 Easy to machine 
 
 
 
 What do you need ? 
 
 
  High Q value at your frequency  
 
 wide range of ferrite materials F02 to F100 
 number in name gives maximum frequency in MHz  for which high Q is still achieved (02 is 0.2 MHz) 
 
 &amp;nbsp; 
  Excelent temperature stability  
 
 materials F2 to F100 are your choice 
 
 &amp;nbsp; 
  High temperature applications  
 
 Materials with Curie Temperature ranging  from 150 to 600 °C are available 
 
 &amp;nbsp; 
  Highest excitation levels   Large DC-Bias or strong external magnetic fields  
 
 PFS3 will do your job 
 
 &amp;nbsp; 
  Temporary Magnetic or mechanical stress  
 
 F1ib does not remember the torture 
 
 &amp;nbsp; 
 
 
  Smallest sizes, Customized shapes   Complicated geometries, Design for automation  
 
 Ceramic Injection Moulding of ferrites  turns your vision into products 
 
 &amp;nbsp; 
  Contacting Pads, Shielding   Thermal compression of wire ends  
 
 Selective metallization of ferrites serves your needs 
 
 &amp;nbsp; 
  Medical applications  
 
 Parylene coating gives you coverage 
 
 &amp;nbsp; 
  You do not like cables and plugs  
 
 Wireless data and power transfer gets rid of cables 
 
 
 
 Wireless power and data transfer 
 
 
 Rotating scanner system 
 &amp;nbsp; 
   
   
 &amp;nbsp; 
 
  
  Energy transfer from primary to secondary side.  
  Bi-directional data transfer  
 
   
 
 Properties and applications of Ferrites 2 
 
  Less common thought of properties of soft magnetic ferrites:  
 
 Magnetostriction ➤&amp;nbsp;Ultrasonic actuators and sensors, “invisible speakers” 
 Lossy interaction with fields from MHz to some GHz ➤&amp;nbsp;Inductive Heating, selective microwave heating 
 Colour and magnetics ➤&amp;nbsp;Copier powder 
 DC-Magnetization ➤&amp;nbsp;Switchable mechanical forces 
 
 &amp;nbsp; 
 &amp;nbsp; 
 Nennen Sie uns Ihre Anforderungen – wir entwickeln die passende Lösung. 
 Haben wir Ihr Interesse geweckt? Dann&amp;nbsp;  sprechen Sie uns an  . 
 Download 
 PDF&amp;nbsp;„ Ferrites for sensor applicatons – design and properties “ 
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            </content>

                            <updated>2020-11-01T00:00:00+01:00</updated>
                    </entry>

    
    
        <entry>
            <title type="text">Neosid im Internet der Dinge</title>
            <id>https://neosid.de/loesungen-innovationen/wissensdatenbank/neosid-im-internet-der-dinge</id>
            <link href="https://neosid.de/loesungen-innovationen/wissensdatenbank/neosid-im-internet-der-dinge"/>
            <summary type="html">
                <![CDATA[
                
                                            Neue Suchmaschine für IoT-Technologien listet NEOSID.
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  Das Internet der Dinge kommt – und NEOSID liefert die technologische Grundlage.  Das Internet der Dinge vernetzt physische und virtuelle Objekte und lässt sie zusammenarbeiten. Um Dinge in der realen Welt mit Informationen im virtuellen Netz eindeutig zusammenzubringen, sind RFID-Komponenten eine unablässige Technologie. 
 Die Suchmaschine RFID &amp;amp; Wireless IoT (rfid-wiot-search.com) ist genau auf diese Technologie spezialisiert und listet innovative Unternehmen, Produkte und Lösungen. Und NEOSID ist dabei! 
 Zu der „state-of-the-art wireless technology”, die hier zu finden ist, gehören auch unsere miniaturisierten RFID Transponder NeoTAG® Inlay und Plug, die auch unter widrigsten Bedingungen standhalten und eine bemerkenswerte Reichweite haben – sogar aus Metallumgebungen. 
 Erfahren Sie mehr über unsere  RFID-TAGs . 
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            </content>

                            <updated>2018-06-24T00:00:00+02:00</updated>
                    </entry>

    
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