Vacuum tube

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Ingenium, 1985.0665.001
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OBJECT TYPE: POWER AMPLIFIER
DATE: 1929–1939
ARTIFACT NUMBER: 1985.0665.001

MANUFACTURER: NORTHERN ELECTRIC CO. LTD.
MODEL: R205D
LOCATION: Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: BAKELITE BASE/ GLASS ENVELOPE/ 4 METAL PINS

Dimensions

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

Length: 10.8 cm
Width: 5.8 cm
Height: 11.1 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

AKA: NORTHERN ELECTRIC
Country: Canada
State/Province: Unknown
City: Unknown

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: MADE IN CANADA.
Function: USED AS AN AF AMPLIFIER IN OUTPUT STAGES WHERE MODERATE POWERS ARE REQUIRED/ MAY ALSO BE USED AS AN OSCILLATOR, MODULATOR OR RF AMPLIFIER
Technical: IS ESSENTIALLY A 205A TYPE TUBE WITH A M-TYPE FLAT FILAMENT INSTEAD OF A TWISTED FILAMENT/ FILAMENT IS BETTER ELECTRICALLY THAN THE 205A
Area Notes: Unknown

Details

Markings: FOLLOWING INFO. APPEARS ON GLASS BULB: 'NORTHERN ELECTRIC/ COMPANY LIMITED/R205-D/MADE IN/CANADA/PATENTED 1917 1920/1921 1922 1926 1928'
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:

NORTHERN ELECTRIC CO. LTD., Vacuum tube, circa 1929–1939, Artifact no. 1985.0665, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1985.0665.001/

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