Image / First form of "grid-audion", from Electrical World

View source image on contributor's website.

Get Citation

Have a question about this item?

Contact Owner

Item information. View source record on contributor's website.

Title: First form of "grid-audion", from Electrical World
Creator: Unknown
Date Created and/or Issued: 1951/ /
Contributing Institution: History San Jose Research Library
Collection: History San Jose Online Catalog
Rights Information: Please contact the contributing institution for more information regarding the copyright status of this object.
Description: Photo of page from the Vol., 1., No. 19 (Nov. 9, 1907) issue of Electrical World, page 926. Handwritten note on front of image: This is the very first form of "grid-audion" tube cylindrical, not spherical - with all leads coming out a tthe base of the tube. No known sample of this type exists today - 1951." Stamped with Gerald F. J. Tyne's name and address on reverse.
Type: image
Format: Black & White
Identifier: 7B703C10-78DF-4F49-83FD-041683518840
2003-59-273
Subject: Amplifiers, Vacuum-tube (LCSH)
Vacuum-tubes (LCSH)
Audion
De Forest, Lee

About the collections in Calisphere

Learn more about the collections in Calisphere. View our statement on digital primary resources.

Copyright, permissions, and use

If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.

Share your story

Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.