Vacuum tube

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Ingenium, 1998.0739.001
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OBJECT TYPE: HIGH MU TRIODE
DATE: 1952
ARTIFACT NUMBER: 1998.0739.001

MANUFACTURER: Canadian Radio Mfg. Corp. Ltd.
MODEL: 7B4
LOCATION: Toronto, Ontario, Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: .1 GLASS ENVELOPE; METAL BASE, PINS & PARTS/.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: 2.9 cm
Height: 7.0 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: Rogers
Country: Canada
State/Province: Ontario
City: Toronto

Context

Country: Canada
State/Province: Ontario
Period: Unknown
Canada: CANADIAN MADE VACUUM TUBE MFD. BY CANADIAN RADIO MFG. CORP. & SOLD BY ROGERS, ONLY INDEPENDENT CANADIAN MAKER OF VACUUM TUBES (FOUNDED IN 1925). THIS TUBE IS PART OF LARGE COLLECTION DONATED TO CSTM BY NATURAL RESOURCES CANADA.
Function: GLASS LOCK-IN TYPE VACUUM TUBE USED IN RESISTANCE-COUPLED AMPLIFIER CIRCUITS.
Technical: EXAMPLE OF HI MU TRIODE VACUUM TUBE.
Area Notes: Unknown

Details

Markings: .1 GREY LETTERING ON TUBE READS "7B4"; GREEN LETTERING READS "ROGERS/ PAT. 38-52"/.2 YELLOW LETTERING ON BOX END READS "ROGERS/ TUBE" WITH HANDWRITTEN "7B4"; GREEN, YELLOW & WHITE LETTERING ON BOX SIDES READS "GUARANTEED/ ROGERS/ ELECTRONIC TUBE", "ROGERS GUARANTEE" WITH GUARANTEE INFO. & "MANUFACTURED BY/ CANADIAN RADIO MANUFACTURING CORPORATION LIMITED/ SOLD BY ROGERS MAJESTIC ELECTRONICS LIMITED/ TORONTO CANADA"
Missing: COMPLETE
Finish: .1 COLOURLESS TRANSPARENT GLASS;METALLIC BASE & PINS /.2 YELLOW & GREEN EXTERIOR
Decoration: N/A

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

Canadian Radio Mfg. Corp. Ltd., Vacuum tube, after 1952, Artifact no. 1998.0739, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1998.0739.001/

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