Secrets will always be a factor in the political life of any society, and it could be argued that none enjoy secrets, particularly Official Secrets, quite so much as the English. Inventions and Official Secrecy traces the little known history of UK legislation which permits the British Government to make Official Secrets of certain technical ideas submitted as patent applications, and thereby prohibit their publication. The story begins in the mid-nineteenth century, and introduces a number of interesting inventors, politicians, and civil servants. Including the latest information to be...

There is more to circuit design than a good theoretical foundation coupled with a considerable amount of laboratory experience. While recognizing that theoretical knowledge is essential, Dr. O'Dell discusses the practical element of electronic circuit design with emphasis on learning by doing. Where do new circuit ideas come from? This is the topic of the first eight chapters, which deal with high and low frequency small signal circuits, opto-electronic circuits, digital circuits, oscillators, translinear circuits, and power amplifiers. In each chapter, one or more experimental circuits are...

This book is an up-to-date text on electronic circuit design for people who like to learn electronics by building circuits and making measurements. The subject is dealt with from an experimental point of view, but this has not restricted the author to well-known or simple circuits. Indeed, some very recent and quite advanced circuit ideas are put forward. Each chapter takes up a particular type of circuit, and then leads the reader to gain an understanding of how these circuits work by proposing experimental circuits for the reader to build and measure. Examples discussed include step...