The problems encountered with such high voltage transmission lines exposed to nature are electrostatic fields near the lines, audible noise, radio interference, corona losses, carrier and TV interference, high voltage gradients, heavy bundled conductors, control of voltages at power frequency using shunt reactors of the switched type which inject harmonics into the system, switched capacitors, over voltages caused by lightning and switching operations, long air gaps with weak insulating properties for switching surges, ground-return effects, and many more. The important topic of EHV cable transmission up to 1200 kV is gaining ground with oil-filled, PPLP, XLPE, and SF6 insulation. The book covers all topics that are considered essential for understanding the operation and design of EHV ac overhead lines and Underground cables. Theoretical analyses of all problems combined with practical application are presented in detail. EHV laboratory equipment and testing are fully covered together with application of digital recorders, fibre optics, etc. for impulse measurements. Every chapter contains many worked examples in order to illustrate and reinforce the theory. All examples are taken from practical situations as far as possible. 

Livre électronique: Theory and Design of Electrical and Electronic Circuits

Electronic and Electrical Servicing provides a thorough grounding in the electronics and electrical principles required by service engineers servicing home entertainment equipment such as TVs, CD and DVD machines, as well as commercial equipment including PCs.

In the printed book, this new edition covers all the core units of the Level 2 Progression Award in Electrical and Electronics Servicing (Consumer/Commercial Electronics) from City & Guilds (C&G 6958), plus two of the option units. For those students who wish to progress to Level 3, a further set of chapters covering all the core units at this level is available as a free download from the book's companion website or as a print-on-demand book. The book and website material also offer a fully up-to-date course text for the City & Guilds 1687 NVQs at Levels 2 and 3.

Auteur: Robert C baker Editeur : Barks Pubns pages:238 Format :pdf

PART I: Analog Devices and Circuitry
PART II: Electronic Instrumentation
PART III: Linear Integrated Circuits
PART IV: Control Systems
PART V: Motor Speed Control Systems