Electronic Portable Instruments

With the availability of advanced technologies, digital systems, and communications, portable instruments are rapidly evolving from simple, stand alone, low-accuracy measuring instruments to complex multifunctional, network integrated, high-performance digital devices with advanced interface capabilities. The relatively brief treatments these instr

Batteries for Portable Devices provides a comprehensive overview of all batteries used in portable electric and electronic, as well as medical devices. These range from the cellular phone to portable CD and cardiac pacemakers to remote micro-sensors. The author looks at the behaviour of batteries in the conditions encountered in the above applications. Information on the performance of the most recent commercial batteries are graphically illustrated and comparisons are made. This easy-to-read book also contains useful information on topics rarely discussed in the field, such as battery collection, recycling and market trends. * Contains an extensive bibliography* Includes rarely discussed topics, such as battery collection and recycling* Well illustrated and easy to read

Battery Operated Devices and Systems provides a comprehensive review of the essentials of batteries and battery applications as well as state-of-the-art technological developments. The book covers the most recent trends, especially for the ubiquitous lithium ion batteries. It lays particular emphasis on the power consumption of battery operated devices and systems and the implications for battery life and runtime. Battery management is also dealt with in detail, particularly as far as the charging methods are concerned, along with the criteria of battery choice. This book describes a variety of portable and industrial applications and the basic characteristics of all primary and secondary batteries used in these applications. Portable applications include mobile phones, notebook computers, cameras, camcorders, personal digital assistants, medical instruments, power tools, and portable GPS. Industrial applications range from aerospace and telecommunications to emergency systems, load levelling, energy storage, toll collection, different meters, data loggers, oil drilling, oceanography, and meteorology. The book also discusses wireless connectivity, i.e. Wi-Fi, Bluetooth and Zigbee, and concludes with some market considerations. Links to further reading are provided through the 275 references. This book will be a valuable information source for researchers interested in devices and systems drawing power from batteries. It will also appeal to graduates working in research institutions; universities and industries dealing with power sources and energy conversion; civil, electrical and transport engineers; and chemists. A comprehensive review of battery applications Includes 209 figures and 62 tables Describes state-of-the-art technological developments

In this book we have included more examples,tutorial problems and objective test questions in almost all the chapters.The chapter on Optoelectronic Devices has been expanded to include more application examples in the area of optical fibre networks.The chapter on Regulated Power Supply carries more detailed study of fixed positive-Fixed negative and adjustable-linear IC voltage regulators as well as swithching voltage regulator.The topic on OP-AMPs has been separated from the chapter on integrated Circuits.A new chapter is prepard on OP-AMPs and its Applications.The Chapter on OP-AMPs and its Applications includes OP-AMP based Oscillator circuits,active filters etc.

We will address the historical development of the most relevant electronic instruments and explain each one without detailing their operation since many no longer operate today. In this sense, it is necessary to mention that it is not that the electronic instruments not developed in this volume do not matter, but that the importance of those addressed is much greater. Therefore, we will focus on the analysis of how they were manufactured and, where appropriate, how they evolved to become modern electronic music instruments. Since the design of new musical instruments has been complex, the instruments mentioned throughout this volume will not be explained primarily in technical detail. Still, the most relevant points will be mentioned as an introduction. Something that we must consider all the time when reading this volume is that all the instruments discussed have a common factor: their design has always been intrinsically linked to the technologies available to their inventor, depending on the time in which he lived. While many of them may seem somewhat outdated or childish when compared to those that exist today, we must never forget that most of these instruments ignored practices, aesthetic ideals, and industry standards about the time and place in which they were conceived, such as the ease of manufacture (the telharmonium is an incredible example), the sonic predictability and the economy of scale to be able to mass-manufacture them. For practical reasons, I have divided this volume into three sections: those developed in the 18th century, those produced in the 19th century, and finally, those manufactured in the 20th century, many of which are still in operation today. In this way, we will realize how most of the electronic instruments that are currently used are not more than a century old after they were manufactured for the first time, which is quite surprising. On the other hand, although a highly considerable number of patents for electronic instruments have been registered (especially in the 20th century), I have limited myself to mentioning the most relevant of them to have a notion of how it is that we got to the current point in this ambit. With this in mind, we will inevitably ask ourselves: Why have only very few of the electronic instruments discussed in this volume survived to date? Part of the answer to this question lies in the fact that those instruments that made it have had the capacity to adjust to the rapid and aggressive change of modernity, and because they have been conceived with too much intuition in mind; that is, they work perfectly or rarely fail, they generate familiarity in the consumer at the first contact, and their way of producing them has proven to be profitable for the investors behind the project or the company that manufactures them.