Image / Singer type and Type H audions, 1916-1926

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Title: Singer type and Type H audions, 1916-1926
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: From Gerald F. J. Tyne, with handwritten note: Left - Singer type audion. Right - Type H, vintage of 1926. The audion on the left is likely a triode, early 1920s. The tube on the right is rare. See Gerald Tyne's book.
Type: image
Format: Black & White
Identifier: F3349721-8B5B-4175-A38C-454070423616
2003-59-319
Subject: Audion
Vacuum-tubes (LCSH)
Triodes (LCSH)
Collectors
De Forest, Lee

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