Morgan Alfred. The Boys Fourth Book of Radio and Electronics

New York: Charles Scribner's Sons, 1969. — 227 p.In this fourth volume of his popular series, Alfred Morgan introduces radio and electronics enthusiasts to the technological miracles of solid state physics, semiconductors, and transistors. In addition to explaining the background and practical applications of these relatively new discoveries, Mr. Morgan presents detailed instructions for constructing solar -powered radio receivers, a galvanometer, a solar powerhouse, a transistor motor, a photoelectric burglar alarm, an automatic light switch, an electronic slavey, a rectifier for recharging storage batteries, and code - practice oscillators. All of these can be built at home and suppliers of the necessary materials are cited.