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16 results on '"Vieira, J.L."'

4. Constant frequency PWM capacitor voltage-clamped series resonant power supply

Author

Vieira, J.L. Freitas and Barbi, Ivo

Subjects
Electric current converters -- Methods, Pulse-duration modulation -- Usage, Power supply (Electronics) -- Research, Business, Electronics, Electronics and electrical industries
Abstract

This paper proposes a capacitor voltage clamped series resonant converter, regulated at constant frequency by pulse-width modulation (PWM-CVC-SRC), suitable for an off-line isolated multiple output power supply. The principle of operation, theoretical analysis, simulation, design procedure, and design example are provided, along with experimental results. The validity of the theoretical analysis and the main properties of the proposed converter were demonstrated in the laboratory, with the design and construction of an isolated power supply rated at 12 V/16 A, operating at 100 kHz. The proposed technique propitiates a significant reduction in the rms value of the current through transistors, besides the reduction of the size of the output filter capacitor and dynamic response improvements.

Published
1993

15. Diplopterys lucida

Author

M.G. Vieira, J.L. Zarucchi, R.H. Petersen, J.F. Ramos & C.D.A. Mota and M.G. Vieira, J.L. Zarucchi, R.H. Petersen, J.F. Ramos & C.D.A. Mota

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1518646%5DMICH-V-1518646, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1518646/MICH-V-1518646/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1979

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