Artifact Details

Title

First transistor

Catalog Number

102748481

Type

Still image

Date

1947

Publisher

Bell Laboratories

Format

Transparency

Description

A plastic wedge secured two gold contacts to the first transistor’s germanium surface. Voltage applied to one contact modulated the current flowing through the other, amplifying the input signal up to 100 times.

Category

Identification photograph

Lot Number

X7413.2015