transistor invention

[div]

mosfet was the first transistor to be invented before bjt.. the scientists dropped the idea of proceeding with fet cos of some reason n then invented bjt..then later on they came to know tat they were on the right track with inventing fet n started wit fet again..which reason made them drop idea of advancing with fet?

 

[schmitt trigger]

Read the following book, it explains it in great detail:
Crystal Fire: The Invention of the Transistor and the Birth of the Information Age (Sloan Technology Series)

 

[RCinFLA]

Not quite as clean and intended as you describe. The original intent was to design a junction FET, with similar functionality to triode vaccum tube. It just did not work very well. What is now the base of BJT was the FET channel and at the time they could not get it thin enough for the the side deposits to have a large enough effect on modulating current from one end of the channel to other. As a side spin, it was found that when one of the junctions was forward biased there was a current gain through the device. First name given was "transfer resistor", subsequently shorted to "trans-sistor". There was a lot of very large PhD ego's involved and story of BJT depends on who tells the story.

 

[schmitt trigger]

RCinFLA, you neatly summarized the book.

Other books have somewhat different versions, though.

What is really true however, was that Shockley (a genius with a famously difficult temper) did not get along well with Brattain and Bardeen. Thus two camps have arised: those who give the credit mostly to Shockley, and those who give the credit mostly to Bardeen and Brattain. The truth may be that each individual contribution (whether large or small) actually solved a piece of the puzzle.

In the end, all three were recognized by the Nobel prize comitee.

 

[Hero999]

I think many people helped to improve the design of the BJT and it's not fair for one person to take the credit.