A great man is one who collects knowledge the way a bee collects honey and uses it to help people overcome the difficulties they endure - hunger, ignorance and disease!
- Nikola Tesla

Remember, remember always, that all of us, and you and I especially, are descended from immigrants and revolutionists.
- Franklin Roosevelt

While their territory has been devastated and their homes despoiled, the spirit of the Serbian people has not been broken.
- Woodrow Wilson

Slobodan Ćuk

BSEE, Belgrade University, Yugoslavia, 1970
MSEE, University of Santa Clara, CA, USA 1974
Ph.D., Caltech, CA, USA, 1976

Dr. Slobodan Ćuk was a full-time Professor of Electrical Engineering at the California Institute of Technology until January 1, 2000. During that time, more than 30 students obtained their Ph.D. degree in Power Electronics under Dr. Ćuk's guidance. Many of them are now leading researchers and/or Professors of Power Electronics in the U.S. and abroad.

Dr. Ćuk won a coveted IR*100 Award in 1980 from the Industrial Research Magazine for the invention of a new and patented switching converter topology and several of its extensions, which are now known as the ĆUKonverter technology. For the invention of Integrated Magnetics and expediting the development of switched-mode power converters, Dr. Ćuk obtained the prestigious 1991 Edward Longstreth Medal from the Franklin Institute, which was for the first time in its 100 years history awarded to researchers in Power Electronics. His publications include over 100 scientific papers in the Power Electronics field and a three-volume book on Advances in Switched-Mode Power Conversion.

Over a span of 20 years, Dr. Ćuk has taught a number of public and in-house courses in the United States, Europe and Far East, and gave a number of tutorial seminars at leading Power Electronics conferences throughout the world. These courses and seminars have been attended by over 4,000 Power Electronics specialists.

In 1979, Dr. Ćuk founded TESLAco with the charter to apply the basic research results developed at Caltech to practical commercial and military designs. He holds over 30 patents related to new switched-mode power conversion concepts.

He received Franklin laureate award for pioneering and expediting the development of integrated magnetics and switched-mode power conversion.

From TESLAco

Modelling, analysis, and design of switching converters


Cuk, Slobodan (1977) Modelling, analysis, and design of switching converters. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-03262008-110336


The principal objective of this work on modeling and analysis of switching dc-to-dc converters and regulators is to obtain a linear model (either through state-space or linear circuit description), subject to appropriate restrictions, for the inherently nonlinear power state in which the dc conversion is accomplished. A general unified approach to modeling and analysis of switching dc-to-dc converters is developed which is directly applicable to any dc-to-dc operating in either of two conduction modes (continuous or discontinuous inductor current), and which results in a final dynamic linear model either in terms of state-space equations or in terms of their corresponding linear circuit models. In particular, in Part I this analysis technique, called state-space averaging, is applied to the continuous conduction mode of converter operation, while in Part II appropriate extension of the method to the discontinuous conduction mode is made. In each case, the culmination of modeling and analysis is achieved in the development of canonical circuit models which represent any such converter regardless of its detailed configuration.

The insights that emerge from the general state-space modeling approach (Parts I and II) lead in Parts III and IV to the design of new converter topologies through the study of generic properties of the cascade connection of basic buck and boost converters. This study paves the way in Part IV to the discovery of a new switching converter based upon capacitive rather than the usual inductive energy transfer. The new converter is shown to have substantial advantages over the conventional converters in its class in efficiency, performance, and also in size and weight.

Bothe the state-space averaged models and their corresponding circuit realizations provide the circuit designer with a powerful tool for analysis of existing converters as well as for synthesis of new converter topologies.

Thesis File (PDF 10 MB)

From CaltechTHESIS - A Caltech Library Service



People Directory

Lance Sijan

Lance Peter Sijan (April 13th, 1942 - January 22nd, 1968) was a United States Air Force officer and fighter pilot. He was awarded the Congressional Medal of Honor for his selflessness and courage.

Sijan was born in Milwaukee, Wisconsin in 1942 from a Serbian father and Irish mother. He graduated from the United States Air Force Academy in 1965, and after attending pilot training, was assigned to the 366th Wing at Da Nang Air Base, Vietnam.

Read more ...


The Meaning of Reality

Essays on Existence and Communion, Eros and History

by Christos Yannaras

The collection of articles traces the thought of Christos Yanaras through his long journey in discovering the meaning of existence, communion, eros, and history. It is a cause of immense joy that no fewer than twenty articles of passionate significance and substance have at present been gathered together in this volume under the title The Meaning of Reality.

Yannaras is undoubtedly one of the most significant thinkers of our time. Kallistos Ware once described him as "the most creative and prophetic religious thinker at work in Greece today," while Rowan Williams characterizes him as "one of the most significant Christian philosophers in Europe." His very wide and no less deep education helps him to develop an inimitable blend of philosophy, theology, and social criticism, and to speak in an original way about the traditional and contemporary issues of human existence, as well as the latest challenges of modern empirical science and political engagement. A detailed knowledge of the writings of the Holy Fathers has always been his foundation amidst the labyrinth of modern thought - which is inimately bound up with psychoanalysis, environmental issues, human rights, postmodernism, and pluralism , to mention just a few. Insistence on the primacy, uniqueness, and eternal value of human personality prevails in almost all his works and inspires his own vigorous theological and ecumenical engagement, based on the Orthodox eucharistic and ascetic tradition.