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Point-contact transistor (BJT, 1947)

Ciro Santilli (@cirosantilli, 37) ... Technology Area of technology Electronics Electronic component Electronic switch Transistor
Updated 2025-07-16  0 By others on same topic  0 Discussions Create my own version
The first working one in 1947 by John Bardeen and walter Brattain in Bell Labs Murray Hill.
People had already patented a lot of stuff before without being able to make them work. Nonsense.
As the name suggests, this is not very sturdy, and was quickly replaced by bipolar junction transistor.

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