Steckler Larry. Simple Transistor Projects for Hobbyists & Students

Slough Buck: Foulsham-Tab Limited, 1973. — 192 p. — ISBN: 0-7042-0026-0The projects in this book are simple in so far as the circuitry is straightforward and the construction quite easy. But they are not ultraelementary "beginners' stuff" by any means, and a good many of them are advanced enough to exercise the ingenuity of experienced hobbyists and students, especially as the American origin of the designs necessitates a certain amount of re-orientation to make them suitable for British use.
Nearly all electronic projects are built on a foundation of some sort. In the early days of broadcasting we used wooden baseboards with vertical or sloping front panels screwed to them. The boards were usually of thick plywood and the panels of ebonite or, later, bakelite. The panel -and -baseboard pattern was soon superseded by metal chassis, especially in sets where metallic screening at earth potential was needed to ensure stable operation. This fashion continued till the printed -circuit and semiconductor era which is still with us, though discrete components are being gradually replaced in many cases with integrated -circuit modules.