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Image: Point-contact transistor
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Original image (SVG file, nominally 512 × 512 pixels, file size: 24 KB)
Description: The gold foil is split into two parts at the vertex of the plastic wedge, and forms two separate contacts with the p-type upper layer of the germanium substrate when the wedge is pressed against it by the spring. The two pieces of gold foil form the collector and emitter, and a metal electrode attached to the other side of the semiconductor forms the base electrode.
Title: Point-contact transistor
Credit: Own work
Author: 忍者猫
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No
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