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Isaac Cohen
Researcher at National Technological University
Publications - 75
Citations - 849
Isaac Cohen is an academic researcher from National Technological University. The author has contributed to research in topics: Voltage & Flyback transformer. The author has an hindex of 15, co-authored 75 publications receiving 821 citations. Previous affiliations of Isaac Cohen include Texas Instruments.
Papers
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Journal ArticleDOI
Natural contamination with arsenic and other trace elements in ground waters of Argentine Pampean Plain.
Silvia Sara Farias,Victoria A Casa,Cristina Vázquez,Luis Ferpozzi,Gladys N Pucci,Isaac Cohen +5 more
TL;DR: The locations where natural sources of arsenic are considered to be of concern continue to grow, and include those associated with soils developed on loess or loessic sediments zones and transported volcanic materials sites.
Journal ArticleDOI
Efficiency Optimization in Digitally Controlled Flyback DC–DC Converters Over Wide Ranges of Operating Conditions
TL;DR: In this article, a lookup table-based digital controller is applied to achieve on-line efficiency optimization by programming switching frequencies and operating modes based on the efficiency optimization processes, which is verified by experimental results on a low cost 65 W flyback dc-dc prototype.
Patent
System and method for synchronous rectifier drive that enables converters to operate in transition and discontinuous mode
TL;DR: In this article, the use of a current emulator provides an inexpensive solution for controlling synchronous rectifier transitions without resorting to more expensive current sensing solutions that are commercially impracticable.
Patent
Method and apparatus for multi-phase power conversion
TL;DR: In this article, the phase angle difference between two phases is measured using a single component, such as a resistor, and a phase angle detector is provided for each phase to obtain the desired angle difference.
Patent
Flyback converter with secondary side regulation
TL;DR: In this paper, flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage have been discussed, where the primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in first mode.