Vacuum tube

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Ingenium, 1990.0126.001
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OBJECT TYPE: MEDIUM MU/POWER AMPLIFIER
DATE: 1925
ARTIFACT NUMBER: 1990.0126.001

MANUFACTURER: Western Electric Co. Inc.
MODEL: 205D
LOCATION: United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: CARDSTOCK/ METAL, GLASS, SYNTHETIC

Dimensions

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

Length: 10.6 cm
Width: 5.7 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Vacuum Tubes
Category: Telephone
Sub-Category: N/A

Manufacturer

AKA: Western Electric
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: North America
State/Province: Unknown
Period: Unknown
Canada: USED IN CANADA
Function: TO AMPLIFY THE AUDIO-FREQUENCY OF RADIO WAVES IN OUTPUT STAGES WHERE MODERATE POWERS ARE REQUIRED. IT MAY ALSO BE USED AS AN OSCILLATOR, MODULATOR OR RADIO FREQUENCY AMPLIFIER.
Technical: A 205A TUBE WITH A M-TYPE FLAT FILAMENT INSTEAD OF A TWISTED FILAMENT, ALSO THE FILAMENT WAS BETTER ELECTRICALLY
Area Notes: Unknown

Details

Markings: ON TUBE BASE: 'WESTERN ELECTRIC/ MADE IN U.S.A./ 205D'/ PRINTING ON BOX INCLUDES: 'Western Electric/ 205D/ VACUUM TUBE/ MADE IN U.S.A./ WARNING/ WESTERN ELECTRIC CO. INC./ WILL NOT ACCEPTTHIS/ TUBE AS UNUSED, IF RETURNED WITH THIS SEAL BROKEN'/ HANDWRITTEN ON BOX: 'In/ Nov 26th/ 1947'
Missing: From CA of 05/01/1998 by Pat Montero: No - Complete
Finish: UNCOLOURED GLASS/ BLACK BASE
Decoration: N/A

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

Western Electric Co. Inc., Vacuum tube, after 1925, Artifact no. 1990.0126, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1990.0126.001/

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