At times the system worked and sometimes it unexpectedly stopped working. When the team was working on building such a device, there were many flaws in the research. If the flow of electrons from the emitter to the collector could be controlled by one way or the other, an amplifier could be built of the diode! It seemed very difficult, but Brattain made the move. The principle of transistor invention lies on understanding the electron mobility. Bardeen and Brattain succeeded in making a working device and then Shockley attempted to develop a triode based semiconductor device. John Bardeen developed surface physics which was an outcome of the research and the odd behavior of the previous study. John Bardeen - Willian Shockley and Walter Brattain Advancements with triode Learning more about this diode, they tried making out a triode however, they found this process to be very tedious. As tube based technology was not fast enough, they tried with solid state diodes. Purdue university proved success in producing pure and a standard high quality germanium semiconducting crystals. These radars served the purpose of a frequency mixer. Julius Edgar LilienfeldĬan you guess what made these people work so religiously on transistors? There is a role played by the germanium crystals behind the screen! The ultimate aim of the research was to produce a pure germanium crystal mixer diode that was used in the radars. John Bardeen, William Shockley and Walter Brattain made parallel researches with germanium. Though no findings were made at that time, later researches show that Julius Lilienfeld’s transistor gave a perfect result and gain. Following the works of Julius, in 1934, a German physicist, Oscar Heil marked another patent for the field effect transistor. Yet, he had a major role in the invention of the field effect transistor. But, as he did not make any research publications regarding the invention of the transistor, the industry ignored his work. On Octoan Austrian-Hungarian physicist, Julius Edgar Lilienfeld recorded the first patent for transistors in Canada. To start up with the invention story of transistors let us have a look on the people who were behind its invention.

So lets begin our journey on the time machine! Parents of transistors We have developed this article by seeking inspiration from the good responses we have received for our article on The Story behind Invention of PN Junction. In this article, lets go deep into the interesting history of transistor invention. They are either packed separately or found coupled to the integrated circuits.Transistors are of two types, PNP and NPN. This semiconductor device is used either for switching purposes or for amplification purposes in electronic devices. It is very rare to see any circuits built without at least one transistor. We all know “ transistor” is an integral part of any electronic circuit/device.

Transistor invention