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Summary

DescriptionPoint-contact transistor.svg
English: 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.
Date
Source Own work
Author 忍者猫
Other versions Image:Point-contact_transistor-es.svg (Spanish, .svg)

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The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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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)

Captions

Schematic illustration of an early germanium point-contact transistor
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current00:48, 9 March 2020 Thumbnail for version as of 00:48, 9 March 2020 512 ×ばつ 512 (24 KB)忍者猫 Uploaded own work with UploadWizard

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