Vacuum tube

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Ingenium, 1998.0625.001
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OBJECT TYPE: DOUBLE BEAM POWER AMPLIFIER/PENTODE
DATE: 1957
ARTIFACT NUMBER: 1998.0625.001

MANUFACTURER: General Electric
MODEL: 28D7
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: .1 GLASS TUBE, METAL BASE & PINS/.2 CARDBOARD BOX

Dimensions

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

Length: N/A
Width: 3.0 cm
Height: 7.8 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

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

Context

Country: Canada
State/Province: Ontario
Period: Unknown
Canada: FROM COLLECTION OF VACUUM TUBES DONATED TO CSTM BY CANADIAN GOVERNMENT DEPARTMENT NATURAL RESOURCES CANADA.
Function: VACUUM TUBE USED AS POWER AMPLIFIER.
Technical: EXAMPLE OF DOUBLE BEAM POWER AMPLIFIER.
Area Notes: Unknown

Details

Markings: .1 WHITE LETTERING ON TUBE READS "28D7", "U.S.A.", "GE [LOGO]/ Electronic [SCRIPT]/TUBE"/.2 BLACK LETTERING ON BOX END READS "28D7/ USA"; BLACK LETTERING ON BOX SIDES READS "Electronic [SCRIPT]/ tube", "Progress is Our/ Most Important Product/ Distributed by/ CANADIAN GENERAL ELECTRIC/ COMPANY LIMITED/ Printed in Canada"; BLACK LETTERING ON END FLAP READS "CARTON/ PATENT NO./ 542,977"
Missing: COMPLETE
Finish: .1 COLOURLESS TRANSPARENT GLASS; METALLIC & PINS/.2 RED & GOLD EXTERIOR
Decoration: .2 "GE" LOGO ON SIDES & ENDS; WHITE STRIPE ON SIDES

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

General Electric, Vacuum tube, after 1957, Artifact no. 1998.0625, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1998.0625.001/

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