Electrical Transformers

 

Dry Type Transformer



Radon Transforms and the Rigidity of the Grassmannians (Am-156)

Radon Transforms and the Rigidity of the Grassmannians (Am-156)
This book provides the first unified examination of the relationship between Radon transforms on symmetric spaces of compact type and the infinitesimal versions of two fundamental rigidity problems in Riemannian geometry. Its primary focus is the spectral rigidity problem: Can the metric of a given Riemannian symmetric space of compact type be characterized by means of the spectrum of its Laplacian? It also addresses a question rooted in the Blaschke problem: Is a Riemannian metric on a projective space whose geodesics are all closed and of the same length isometric to the canonical metric? The authors comprehensively treat the results concerning Radon transforms and the infinitesimal versions of these two problems. Their main result implies that most Grassmannians are spectrally rigid to the first order. This is particularly important, for there are still few isospectrality results for positively curved spaces and these are the first such results for symmetric spaces of compact type of rank >1. The authors exploit the theory of overdetermined partial differential equations and harmonic analysis on symmetric spaces to provide criteria for infinitesimal rigidity that apply to a large class of spaces. A substantial amount of basic material about Riemannian geometry, symmetric spaces, and Radon transforms is included in a clear and elegant presentation that will be useful to researchers and advanced students in differential geometry.



The Hilbert Transform of Schwartz Distributions and Applications by J. N. Pandey,
The Hilbert Transform of Schwartz Distributions and Applications by J. N. Pandey,
This book provides a modern and up-to-date treatment of the Hilbert transform of distributions and the space of periodic distributions. Taking a simple and effective approach to a complex subject, this volume is a first-rate textbook at the graduate level as well as an extremely useful reference for mathematicians, applied scientists, and engineers. The author, a leading authority in the field, shares with the reader many new results from his exhaustive research on the Hilbert transform of Schwartz distributions. He describes in detail how to use the Hilbert transform to solve theoretical and physical problems in a wide range of disciplines; these include aerofoil problems, dispersion relations, high-energy physics, potential theory problems, and others. Innovative at every step, J. N. Pandey provides a new definition for the Hilbert transform of periodic functions, which is especially useful for those working in the area of signal processing for computational purposes. This definition could also form the basis for a unified theory of the Hilbert transform of periodic, as well as nonperiodic, functions. The Hilbert transform and the approximate Hilbert transform of periodic functions are worked out in detail for the first time in book form and can be used to solve Laplace's equation with periodic boundary conditions. Among the many theoretical results proved in this book is a Paley-Wiener type theorem giving the characterization of functions and generalized functions whose Fourier transforms are supported in certain orthants of R(superscript n). Placing a strong emphasis on easy application of theory and techniques, the book generalizes the Hilbert problem in higher dimensions andsolves it in function spaces as well as in generalized function spaces.



Linear variable differential transformer - The linear variable differential transformer (LVDT) is a type of electrical transformer used for measuring linear displacement. The transformer has three solenoidal coils placed end-to-end around a tube.

Flyback transformer - A flyback transformer (FBT) or line output transformer (LOPT) is a type of transformer used to generate the high voltage needed for driving a cathode ray tube (CRT) or "picture tube". It converts the input voltage, usually mains voltage in the range 120 to 240 volts, to an output voltage in the range 10 to 20 kilovolts for a colour tube (or just a few kilovolts for a monochrome tube).

Annual Dry Season Offensive - The Annual Dry Season Offensive is a type of low intensity warfare carried out by central states that for geographical, political, and historical reasons troop movement and supply to the dry season, during which time the central government forces attempt to take as much territory and inflict as many casualties as possible.

Wet Transformer - This is a special type of transformer that is used to couple telephone equipment to electronic equipment. It is made with a primary winding that is designed to have a DC voltage impressed upon it.



drytypetransformer

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