Vacuum tube

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OBJECT TYPE
SODION/LOW MU/DETECTOR
DATE
1923–1924
ARTIFACT NUMBER
1994.0249.001
MANUFACTURER
Connecticut Telephone & Electric Co.
MODEL
D21
LOCATION
Meriden, Connecticut, United States of America

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
1
AKA
N/A
Patents
N/A
General Description
GLASS/ METAL/ SYNTHETIC

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
9.6 cm
Width
3.5 cm
Height
N/A
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Vacuum Tubes
Category
Receiving
Sub-Category
N/A

Manufacturer

AKA
Connecticut
Country
United States of America
State/Province
Connecticut
City
Meriden

Context

Country
United States of America
State/Province
Unknown
Period
1920'S
Canada
Unknown
Function
USED AS A DETECTOR IN EARLY RADIO RECEIVERS
Technical
EXAMPLE OF A DOUBLE ENVELOPE TUBE DESIGN DEVELOPED BY DR. H.P. DONLE WHILE AT CONNECTICUT TEL. & ELEC. IT WAS AN ATTEMPT TO PRODUCE A TUBE THAT WOULD NOT INFRINGE EITHER THE DEFOREST OR FLEMMING TUBE PATENTS
Area Notes
Unknown

Details

Markings
ON GLASS: 'Sodion/ D-21'
Missing
N/A
Finish
BLACK BASE/ RED PRINTING ON GLASS
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Connecticut Telephone & Electric Co., Vacuum tube, between 1923–1924, Artifact no. 1994.0249, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1994.0249.001/

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