IEEE Spectrum, is the world’s largest professional organisation devoted to engineering and the applied sciences. It contains peer-reviewed feature articles pertaining to technology and science trends affecting business and society. This spectrum was conducted to enlighten the young minds and some skillful knowledge out of it. The speaker Ms. V. Pooja spoke on “How the first transistor worked – The History of vacuum tube Triode”. The speaker enlightened us with the idea that “the vacuum-tube triode was driving the entire enterprise of commercial radio, an industry worth more than a billion dollars in 1929. However, vacuum tubes were power-hungry and fragile. If a more rugged, reliable, and efficient alternative to the triode could be found, the rewards would be immense. The goal was a three-terminal device made out of semiconductors that would accept a low-current signal into an input terminal and use it to control the flow of a larger current flowing between two other terminals, thereby amplifying the original signal. The underlying principle of such a device would be something called the field effect—the ability of electric fields to modulate the electrical conductivity of semiconductor materials. This article is part of our special report on the 75th anniversary of the invention of the transistor. The first recorded instance of a working transistor was the legendary point-contact device built at AT&T Bell Telephone Laboratories in the fall of 1947. Though the point-contact transistor was the most important invention of the 20th century, there exists, surprisingly, no clear, complete, and authoritative account of how the thing actually worked.” The participants had an amazing experience in the meet and enjoyed the entire session.
Co-Organizing unit               : IEEE Spectrum SJCEÂ
Conducted Date                    : 14/11/23
Total no. of Participants       : 43
