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dc.contributor.advisorZinger, Donald S.en_US
dc.contributor.authorMaligireddy, Mounikaen_US
dc.date.accessioned2017-08-02T21:16:07Z
dc.date.available2017-08-02T21:16:07Z
dc.date.issued2014
dc.identifier.urihttp://commons.lib.niu.edu/handle/10843/17721
dc.descriptionAdvisors: Donald Zinger.en_US
dc.descriptionCommittee members: Mansour Tahernezhadi; Peng Woo.en_US
dc.description.abstractLEDs are the most efficient way to turn an electric current into illumination. Connecting LEDs in either series or parallel is considered to be an option for better lighting and various other applications. Generally, when a large number of LEDs are considered, a parallel connection is opted. Connecting LEDs in parallel leads to current sharing problems as a result different currents flow in different branches. There are many ways in which current sharing problem in parallel connected LEDs can be solved. One such method is magnetic circuit wherein magnetically coupled inductors help resolve the current sharing problem. This thesis proposes a driver circuit for the magnetic circuit of LEDs.en_US
dc.description.abstractThe LED driver is an electronic circuit that provides the LEDs with required power from the source. There are many sources of unneeded energy dissipation in the LED driver circuit. Inefficiencies in the inductors, such as eddy currents and winding resistance, are partially to blame. On the other hand, energy dissipation is primarily due to static and switching losses in the MOSFET. Static losses are due to the on resistance of the MOSFET, and can be decreased with specialty MOSFETs but never eliminated. When a MOSFET dissipates energy due to switching, it is said to be "hard switched". And thus it leads to energy losses. Hence, in order to increase the output and overall efficiency of the magnetic circuit of LEDs, soft switching is desired. This thesis proposed a soft switching circuit to decrease the switching losses and thus to increase the efficiency in the system.en_US
dc.format.extent60 pagesen_US
dc.language.isoengen_US
dc.publisherNorthern Illinois Universityen_US
dc.rightsNIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.en_US
dc.subject.lcshLight emitting diodes--Power supplyen_US
dc.subject.lcshElectrical engineeringen_US
dc.subject.lcshElectrical engineeringen_US
dc.titleMagnetic circuit utilizing soft switching for LED drivingen_US
dc.typeTexten_US
dc.contributor.departmentDepartment of Electrical Engineeringen_US
dc.description.degreeM.S. (Master of Science)en_US


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