Vacuum tube

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OBJECT TYPE
DETECTOR TWIN DIODE
DATE
1957
ARTIFACT NUMBER
1998.0651.001
MANUFACTURER
Marconi
MODEL
5726/6AL5W
LOCATION
Unknown

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 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
1.8 cm
Height
4.4 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
Marconi
Country
Unknown
State/Province
Unknown
City
Unknown

Context

Country
Canada
State/Province
Ontario
Period
Unknown
Canada
CANADIAN MADE ITEM FROM COLLECTION OF VACUUM TUBES DONATED TO CSTM BY CANADIAN GOVERNMENT DEPARTMENT NATURAL RESOURCES CANADA.
Function
MINIATURE, HIGH-PERVEANCE TYPE VACUUM TUBE USED AS DETECTOR IN FM & TELEVISION CIRCUITS, & IS ESPECIALLY USEFUL AS RATIO DETECTOR IN AC-OPERATED FM RECEIVERS.
Technical
EXAMPLE OF MILITARY-INDUSTRIAL VERSIONOF TWIN DIODE VACUUM TUBE, EQUIVALENT TO COMMERCIAL 6AL5. EACH DIODE CAN BE USED INDEPENDENTLY OF OTHERS OR COMBINED IN PARALLEL OR FULL-WAVE ARRANGEMENT. RESONANT FREQUENCY OF EACH UNIT IS APPROXIMATELY 700 MEGACYCLES.
Area Notes
Unknown

Details

Markings
.1 WHITE LETTERING ON GLASS READS "BO/ Marconi [SCRIPT]/ MADE IN CANADA" & "5726/ 6AL5W"/.2 BLACK LETTERING ON BOX END READS "5726/ MARCONI/ RADIOTRON"; BLACK & WHITE LETTERING ON BOX SIDES READS "Marconi [SCRIPT]/ RVC [LOGO]/ CANADIAN MARCONI/ COMPANY/ RADIOTRON", "MARCONI/ RVC [LOGO]/ RADIOTRON/ THE RVC [LOGO] MONO-/ GRAM IS THE/ MARK OF UNEX-/ CELLED RADIO/ TUBE DESIGN/ AND EFFICIENCY/ CANADIAN MARCONI COMPANY"; "CARTON/ PATENT NO./ 542,977"
Missing
COMPLETE
Finish
.1 COLOURLESS TRANSPARENT GLASS; METALLIC PINS/.2 RED & BLACK EXTERIOR
Decoration
.2 JAGGED WHITE STRIPE; WHITE STYLIZED GLOBE ON SIDES

CITE THIS OBJECT

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

Marconi, Vacuum tube, after 1957, Artifact no. 1998.0651, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1998.0651.001/

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