Switching Phenomena with Electric Light Bulbs

Abstract

What happens in electronic appliances, radio receivers, amplifiers and the like after they have been switched on is fairly well known. It is becoming more generally recognized that a cathode ray oscilloscope may be used to obtain all the required information. Less interest is shown, however, in what takes place when actually switching on and off, and yet one could cite many examples of occasions when exact knowledge of switching phenomena could lead either to greater operating safety or to greater economy. The next few oscillograms of the switching phenomena observed on electric light bulbs furnish convenient examples⁸⁸).