Talk:Point-contact transistor

2009.03.09 (March 9th, 2009)

It is often cited that Shockley, Brattain and Bardeen worked for Bell Labs.

This article states that their work was demonstrated on Decenber 23rd, 1947 and implies that this event occurred at Bell Labs in New Jersey.

However, while studying Electronics at Pasadena City College in 1997, I learned the following facts from my textbook:

Shockley, Brattain and Bardeen were conducting their research at The California Institute of Technology (CalTech) in Pasadena, CA;

The first working transistor model was completed and demonstrated at CalTech;

The implication of the date and late hour of completion was that the engineers were attempting to finish their project before leaving for their Christmas Holiday plans. December 23rd was on a Tuesday in 1947.

I will append this comment with the Library of Congress title number for my text book source at a later time when I have retrieved this book from storage.

-cw

Christopher Woodcock cw@cw7.org

CS Woodcock (talk) 19:26, 9 March 2009 (UTC)

Links

I'm sure a link to how to make your own point contact tr would be appreciated by many. Its quite doable. 82.31.207.100 (talk) 14:10, 24 July 2011 (UTC)

Hadn't seen this, but I've already done just that. Pol098 (talk) 15:44, 22 April 2012 (UTC)

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The listed 1966 date

The claim that point contact transistors continued to be manufactured until 1966 claim seems to have been added by user 98.127.121.111 in May of 2022. With careful searching, I can only find sources that say this that were published after this date. Given that these other sources don't specify a company, transistor model, or any other details, they likely are sourced from this very Wikipedia page.

As far as I can tell, is well agreed that Western Electric continued to produce them into the 1960s, and explicitly switch to black packaging around that time. This source has what they believe to be a 1970 gold-plated Kierfott 2N110, but another source with a similar package believes it to be a counterfeit. I'm frankly not enough of an expert to weigh in on this, but at the very least, the 1966 claims is incredibly suspect. MegaZeroX7 (talk) 19:57, 6 July 2024 (UTC)