Kirjahaku

Electronics Simplified, Third Edition, discusses the aims and methods of electronics, with emphasis on digital electronics and software options. It covers the latest developments in electronics, including Blu-ray, digital TV and radio, HD and 3D TV, robotic systems, radar, cellular phones, GPS, and microcomputers. Organized into 17 chapters, the book introduces the reader to every aspect of electronics from fundamentals to applications, with minimal mathematics required. It provides an overview of electricity, waves, and pulses and how a steady voltage is generated, along with power, alternating voltage, and AC and DC transmission. The information on microcomputers has been greatly expanded, while information on analog fundamentals has been retained. It also discusses passive components such as transformers, resistors and capacitors, inductors, transformers, resonance, and diodes; active components and integrated circuits, particularly what a transistor is and what it does; how traditional radio works; elements of television, including color television; digital television and radio broadcasting; and digital signals and digital recording. Finally, the principles of CD recording are explained, along with the basics of microprocessors, calculators, computers, and computer peripherals. This book is essential reading for hobbyists, technicians, professionals, and students. It is suitable for anyone taking a qualification course in electronics, or for those who want to know more about the digital revolution.

In this book Ian Sinclair provides the practical knowhow required by technician engineers, systems designers and students. The focus is firmly on understanding the technologies and their different applications, not a mathematical approach. The result is a highly readable text which provides a unique introduction to the selection and application of sensors, transducers and switches, and a grounding in the practicalities of designing with these devices.The devices covered encompass heat, light and motion, environmental sensing, sensing in industrial control, and signal-carrying and non-signal switches.

Ian Sinclair's Practical Electronics Handbook combines a wealth useful day-to-day electronics information, concise explanations and practical guidance in this essential companion to anyone involved in electronics design and construction. The compact collection of key data, fundamental principles and circuit design basics provides an ideal reference for a wide range of students, enthusiasts, technicians and practitioners of electronics who have progressed beyond the basics. The sixth edition is updated throughout with new material on microcontrollers and computer assistance, and a new chapter on digital signal processing.

A photographic identification guide to 500 southern African bird species, this book replaces our "Photographic Guide to Birds of Southern Africa" in a more user-friendly format and covers double the number of birds. Distribution maps and an 'occurrence bar' depicting months in which the birds can be seen are added features. Emphasis is on quick identification in the field.

This compact, easy-to-use guide features more than 350 of the most conspicuous and commonly seen birds in Namibia. It offers: concise identification text, full-colour photographs of all species covered, up-to-date distribution maps, an informative introduction featuring the ‘specials’ of the key birding destinations in Namibia. An ideal introduction and travelling companion for birders in or visiting the region. Sales points: handy guide for birders of all levels, distribution map for each species, compact and easy to use in the field, concise text by leading experts.

* What are the consequences of fostering for children, their carers and their birth families?* What are the best ways of recruiting, retaining and supporting foster carers?* What are the most important elements of a successful placement?* Can foster care offer a permanent alternative to care at home?Fostering Now brings together authoritative research on foster care in the UK. It provides a succinct overview of a wide range of research projects and highlights the main implications for policymakers and all professionals involved in the fostering process.Drawing on the varied experiences and views of foster children, social workers, foster carers and parents, this book looks at how placement outcomes are influenced by factors such as foster carers' parenting styles, contact with the child's own parents, and the child's gender, ethnicity, age and physical and emotional health. Other important areas examined include care given by relatives, the effects of foster care on education, and what happens to foster children when they return home.Fostering Now identifies the most significant challenges currently faced by foster care and draws out the key messages for policy and practice. It offers important insights into the state of foster care today, and suggests how it can be improved in future. This book is essential reading for social workers, policy makers, academics and foster carers.