Replica-of-first-transistor.jpg
Description Replica-of-first-transistor.jpg |
English:
In 1997 Lucent Technologies created this replica to commemorate the 50th anniversary of the invention of the point-contact transistor at Bell Labs in December 1947.
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Source | https://clintonwhitehouse4.archives.gov/Initiatives/Millennium/capsule/mayo.html | ||||
Author | Federal employee | ||||
Permission
( Reusing this file ) |
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Annotations
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This image is annotated: View the annotations at Commons |
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English: The point-contact transistor effect takes place in the germanium surface below the triangle tip. One wire connect to the germanium plate. (Base) Two other wires connect via the triangle to two closely spaced narrow gold foils (<0.1mm at surface at the lower tip) to the germanium surface. (Emitter and Collector)