Development of high frequency SPICE models for ferrite core inductors and transformers

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dc.creatorMuyshondt, Gabriel Patrick
dc.date.accessioned2016-11-14T23:09:12Z
dc.date.available2011-02-18T23:30:55Z
dc.date.available2016-11-14T23:09:12Z
dc.date.issued1989-05
dc.description.abstractIn this work high frequency SPICE models were developed to simulate the actual behavior of ferrite core inductors and transformers. The models include the nonlinear, multi-valued BH characteristic of the core material, leakage flux, stray capacitances, and core losses. The saturation effects were modeled using two diode clamping arrangements in conjunction with nonlinear dependent sources. Two possible controlling schemes were developed for the saturation switch. One of the arrangements used the current flowing through a series RC branch to control the switch, while the other used a NAND gate. The NAND gate implementation of the switch proved to be simpler and the parameters associated with it were easier to determine from the measurements and the B-H characteristics of the material. Lumped parameters were used to simulate the parasitic effects. Techniques for measuring these parasitics are described. The models were verified using manganese-zinc ferrite-type toroidal cores and they have general applicability to all circuit analysis codes provided that they contain nonlinear sources or equivalent function blocks such as multipliers, adders, and logic components.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2346/20109en_US
dc.language.isoeng
dc.publisherTexas Tech Universityen_US
dc.rights.availabilityUnrestricted.
dc.subjectElectric transformersen_US
dc.subjectIntegrated circuits -- Computer programsen_US
dc.subjectElectric inductorsen_US
dc.subjectFerrite coresen_US
dc.titleDevelopment of high frequency SPICE models for ferrite core inductors and transformers
dc.typeDissertation

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