Mar 28, 2014 · The first working point-contact transistor made in 1947 by Bell Labs. I'm looking for specific dimensions, all I've been able to find is "Fits in the palm of your hand".

Jun 28, 2021 · However, silicon 'cat whisker' diodes were invented before quantum mechanics (they were patented in 1906 per Wikipedia), but were not fully understood until solid state …

Dec 24, 2020 · In December 1947 Bardeen, Brattain and Shockey introduced a device which is considered to be the first transistor. This transistor was point-contact device. So, it used metal …

Oct 3, 2016 · A short timeline of the development of the transistor and Bardeen's role in it. From John Bardeen (Wikipedia) The assignment of the group was to seek a solid-state alternative to …

May 15, 2014 · The crucial point where quantum mechanical calculations became necessary was with the use of transistor technology, which has morphed to chip technology. It was with the …

2 We owe a debt to Bell Labs with Shockley, Bardeen and Brattain for inventing the semiconductor. All have now passed on. I remember seeing my first transistor radio in the …

So a reasonable first approximation is that the current from emitter to collector is exponentially proportional to the voltage between emitter and base. Practical bipolar transistors are actually …

Jan 9, 2021 · In a BJT (Bipolar Junction Transistor), say NPN in common base configuration, we forward bias the Base-Emitter Junction and reverse bias the Base-Collector Junction when …

Jul 8, 2014 · We have now millions of transistors in the same space occupied by the first transistor. Having money there are petawatt commercial lasers for sale.

Jun 22, 2015 · When a transistor is reverse-biased, very little current flows (open circuit), when forward biased, a larger current flows (short circuit). If the leakage current is "large enough," …