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Measuring the Impedance of Inductors and Transformers

From Core Technology Group, Inc.
 

 
In many cases it is necessary to characterize the impedance of inductors and transformers. For instance, power supply designers are interested in characteristics such as DC resistance, resonance and inductance especially when custom components must be used in their designs. Under certain manufacturing or assembly conditions, it may be necessary to measure and sort components that have a wide tolerance. For circuit simulation and modeling, characteristics such as inter-winding capacitance and resonance, as well as DC resistance and inductance are necessary for accurate predictions of circuit performance
Products & Services
Gate drive transformers are used to drive high-speed switching devices such as field effect transistors (FET) and insulated gate bipolar transistors (IGBT). They are used in applications such as switching power supplies. Search by Specification | Learn more about Gate Drive Transformers
Inductance standards and decades provide highly accurate and digitally variable standard values of inductance for calibration, comparison and testing. Search by Specification | Learn more about Inductance Standards and Decades
Ferrite beads are used to suppress unwanted signals that can interfere with electrical devices such as DC supplies, transmission lines and cables. They provide attenuation of selected frequency bands. Search by Specification | Learn more about Ferrite Beads
Inductors coils and chokes are passive components that are designed to resist changes in current and store energy in the form of a magnetic field.  Search by Specification | Learn more about Inductors, Coils and Chokes
Decade boxes and dividers provide highly accurate and digitally variable standard values of resistance, capacitance, inductance, voltage and/or current for calibration, comparison and testing. Search by Specification | Learn more about Decade Boxes and Dividers
Product Announcements
Bicron Electronics Co. - High Isolation IGBT Drive Transformers
Bicron high isolation IGBT Drive Transformers are designed for use with large electric motor control systems such as found in rail locomotive drive and traction control systems, alternative energy... (read more)
COMSOL, Inc. - AC/DC Module
The AC/DC Module sets the stage for modeling the performance of capacitors, inductors, motors, and microsensors. Although these devices are principally characterized by electromagnetics, they are also... (read more)
Datatronics™ - New Datatronics Selection Guide/Short Form Catalog
Design engineers looking for a faster, smarter way to specify and select high-reliability transformers and inductors for leading-edge applications will find the new Magnetics Selection Guide &... (read more)
Triad Magnetics - Triad Switch Mode Hi Frequency Magnetics:
CME and CMT Series 20K-200kHz Common Mode Inductors Offering superior dependability and reliability, Triad's common Mode EMI suppression inductors are used in various types of power supplies to... (read more)
Triad Magnetics - AX02 & AX104 Series Shielded Power Inductors
Triad's shielded surface mount inductors resist EMI/RFI signals and offer excellent DC current characteristics in a wide range of applications for computers, laptops, PDAs, mobile phones, DC-DC... (read more)
Filtronetics, Inc. - Coils
FILTRONETICS, Inc. offers an extensive line of Coils, Custom Coils, Standard Coils, Solenoids, Custom Solenoids, and Inductive Products Including RF Toroidal Solenoids, Power Toroidal Inductions,... (read more)
Datatronics™ - Custom Inductor Online Design Tool
Design engineers looking for a faster, smarter way to specify reliable, high-performance custom inductors for a wide range of OEM electronics circuit designs will find the new MagNETics Online Design... (read more)
 
Topics of Interest
Analysis of Circuit Board Performance Although you may consider such tools as a time-domain reflectometer or an RF network analyzer as belonging strictly to a communications lab, these can aid... (Read More)
Enhanced Loudspeaker Currents When amplifier current capability and loudspeaker loading are discussed it is often said that it is possible to devise special waveforms that cause a loudspeaker to... (Read More)
The LCR Collection is a compilation of QuadTech's most popular application notes on the measurement of impedance. Inductance, capacitance and resistance (LCR) are just three of the most common... (Read More)
12.1 INTRODUCTION A two-terminal network, in general, offers a complex impedance consisting of resistive and reactive components. If a sinusoidal voltage is applied to such a network, the current... (Read More)
PROBING E- AND H-FIELDS IN THE NEAR FIELD The main reason why EMI standards establish that testing should be performed in the far field is that as demonstrated above, a constant impedance in the far... (Read More)
See more product announcements for Gate Drive Transformers
Model 4257 Pulse Transformers

Model 4257 Pulse Transformers
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High Isolation IGBT Drive Transformers

High Isolation IGBT Drive Transformers
Bicron Electronics Co.


SM580 Series Gate Drive Transformers

SM580 Series Gate Drive Transformers
Datatronics™


11 See more product announcements for Gate Drive Transformers