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Thursday, 3 March 2016

“Transistors”

     “Transistors”
What is a transistor?
•A transistor is a 3 terminal electronic device made of semiconductor material.

•Transistors have many uses, including amplification, switching, voltage regulation, and the modulation of signals
            History
•Before transistors were invented, circuits used vacuum tubes:
–Fragile, large in size, heavy, generate large quantities of heat, require a large amount of power
•The first transistors were created at Bell Telephone Laboratories in 1947
–William Shockley, John Bardeen, and Walter Brattain created the transistors in and effort to develop a technology that would overcome the problems of tubes
–The first patents for the principle of a field effect transistor were registered in 1928 by Julius Lillenfield.
– Shockley, Bardeen, and Brattain had referenced this material in their work
•The word “transistor” is a combination of the terms “transconductance” and “variable resistor”
•Today an advanced microprossesor can have as many as 1.7 billion transistors.
What is a transistor,polytechnic notes,semiconductor ,fre notes,

What is a transistor,polytechnic notes,semiconductor ,free notes,

What is a transistor,polytechnic notes,semiconductor ,free notes,doping,

What is a transistor,polytechnic notes,semiconductor ,free notes,doping

What is a transistor,polytechnic notes,semiconductor ,free notes,doping

What is a transistor,polytechnic notes,semiconductor ,free notes,doping

What is a transistor,polytechnic notes,semiconductor ,free notes,doping


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What is a transistor,polytechnic notes,semiconductor ,free notes,doping
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