Resultados de Pesquisa

INGLÊS

Digital Control Of Electric Drives

de J. Sawicki, L. Szklarski e R. Koziol

58,29€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 The electromechanical systems employed in different branches of industry are utilized most often as drives of working machines which must be fed with electric energy in a continuous, periodic or even discrete way. Some of these machines operate at constant speed, others require wide and varying energy control. In many designs the synchronous cooperation of several electric drives is required in addition to the desired dynamic properties. For these reasons the control of the cooperation and dynamics of electromechanical systems requires the use of computers.This book adopts an unusual approach to the subject in that it treats the electric drive system on the one hand as an element of a control system and on the other as an element of a complex automatic system. These two trends in the development of the automatic control of electric drives have resulted in a volume that provides a thorough overview on the variety of different approaches to the design of control systems.
INGLÊS

Surface Acoustic Wave Filters - With Applications To Electronic Communications And Signal Processing

de David Morgan

99,38€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Covers the theory of acoustic wave physics, the piezoelectric effect, electrostatics at a surface, effective permittivity, piezoelectric SAW excitation and reception and the SAW element factor. These are the main requirements for developing quasi-static theory, which gives a basis for the non-reflective transducers in transversal bandpass filters.
INGLÊS

Claim Your Victory Today

de Dr Creflo A. Dollar

ESGOTADO OU NÃO DISPONÍVEL

 Dr. Creflo A. Dollar reveals ten insightful, practical steps for achieving victory over any problem you may ever face.
INGLÊS

100 Poems To Lift Your Spirit

de Leslie Pockell

ESGOTADO OU NÃO DISPONÍVEL

 In the spirit of the Chicken Soup series, here are 100 of the most uplifting poems ever written.
INGLÊS

Who Is In The House? - A Psychological Study Of Two Centuries Of Women'S Fiction In America, 1795 To The Present

de Sally Allen Mcnall

ESGOTADO OU NÃO DISPONÍVEL

 provides the first scholarly historical and psychological analysis of both the content and the appeal of women's popular fiction in America during the past two centuries. Principal attention is given to the power of the images of home and mother, and to the theme of conflict between autonomy and dependence in the female characters.
INGLÊS

Pulse Width Modulated (Pwm) Power Supplies

de V. (Florence, Italy) Quercioli

ESGOTADO OU NÃO DISPONÍVEL

 Provides designers with an in-depth overview on the interdisciplinary methods involved in the design of switching mode power supplies. This book adopts a systemic approach, subdividing the information into functional blocks whose properties and relationships are evaluated and compared with each other.
INGLÊS

Digital Control Of Electric Drives

de J. Sawicki, L. (Academy Of Mining And Metallurgy, Cracow, Poland) Szklarski e R. Koziol

ESGOTADO OU NÃO DISPONÍVEL
INGLÊS

Surface-Wave Devices For Signal Processing

de D.P. Morgan

ESGOTADO OU NÃO DISPONÍVEL

 Focuses on the electronic devices that make use of surface acoustic waves in solids as well as on the principles underlying them. This book presents an introductory survey which is followed by chapters on acoustic wave fundamentals, electric excitation, transducers, multi-strip couplers and propagation effects.

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