Which is the best description of a transistor?
A transistor basically acts as a switch and an amplifier. In simple words, we can say that a transistor is a miniature device that is used to control or regulate the flow of electronic signals. Transistors are one of the key components in most of the electronic devices that are present today.
When did Julius Edgar Lilienfeld create the transistor?
Austro-Hungarian physicist Julius Edgar Lilienfeld proposed the concept of a field-effect transistor in 1926, but it was not possible to actually construct a working device at that time.
When was the first silicon transistor made by Texas Instruments?
The first commercial silicon transistor was produced by Texas Instruments in 1954. This was the work of Gordon Teal, an expert in growing crystals of high purity, who had previously worked at Bell Labs. The first MOSFET actually built was by Kahng and Atalla at Bell Labs in 1960.
How is the n-p-n transistor used in a circuit?
N-P-N transistor is basically used to amplify weak signals to strong signals. In NPN transistor, the electrons move from the emitter to collector region resulting in the formation of current in the transistor. This transistor is widely used in the circuit.
What are the properties of a bipolar junction transistor?
One of the most important properties of the Bipolar Junction Transistor is that a small base current can control a much larger collector current. Consider the following example. A bipolar NPN transistor has a DC current gain, ( Beta) value of 200. Calculate the base current Ib required to switch a resistive load of 4mA.
When was the invention of the transistor made?
Developed in the year 1947 by three American physicists John Bardeen, Walter Brattain and William Shockley, the transistor is considered as one of the most important inventions in the history of science. How do Transistors work?
How are the transistors on a chip fabricated?
These masks will contain the locations of each element of the billions of transistors on a chip. Multiple chips are grouped together and fabricated at once on a single die. Once a wafer is fabricated, the individual dies are sliced up and packaged.