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Birthday present for my brother

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Project by Ted78 posted 12-10-2017 04:40 PM 840 views 0 times favorited 3 comments Add to Favorites Watch
Birthday present for my brother
Birthday present for my brother No picture No picture No picture No picture No picture
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Thumbs up to anyone who knows what thing is. (hint it’s a model of something for nerdy computer engineering brother.)

-- Ted





3 comments so far

View lew's profile

lew

12320 posts in 3900 days


#1 posted 12-10-2017 04:45 PM

Transistor

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View majuvla's profile

majuvla

13038 posts in 3012 days


#2 posted 12-11-2017 04:54 AM

Don’t have a clue but perfect gift for engineer. It’s maybe stand for something between arrow and top pin.

-- Ivan, Croatia, Wooddicted

View Ted78's profile

Ted78

401 posts in 2145 days


#3 posted 12-11-2017 06:12 AM

Thumbs up Lew. It’s a model of the first transistor (well maybe inventions are funny like that) built by a couple guys at Bell labs in the 40’s. Majuvla, indeed it is a stand in the original the C shaped part was clear plastic, and the triangle piece had two bits of gold foil on in the a spring pushed down onto a piece of galium that sat on top of a piece of brass. wired from the two bits of gold foil, on either side of the triangle and a third coming from the bass piece on the base formed the emitter, collector and the base, or whatever they called those things in the 1940’s

-- Ted

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