Vacuum tube

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Ingenium, 1976.0794.001
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OBJECT TYPE: REMOTE CUTOFF/AMPLIFIER
DATE: 1940–1949
ARTIFACT NUMBER: 1976.0794.001

MANUFACTURER: Sylvania
MODEL: 7A7E
LOCATION: United States of America

More Information

General Information

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

Dimensions

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

Length: 7.0 cm
Width: 3.0 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

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

Context

Country: North America
State/Province: Unknown
Period: PROBABLY 1940'S & 1950'S
Canada: Unknown
Function: USED AS A RF AMPLIFIER IN A RADIO RECEIVER.
Technical: 'LOKTAL' TUBES WERE THE 1ST TYPE IN WHICH THE BAKELITE BASE WAS DISPENSED WITH & THE LEAD OUT WIRES FORMED THE CONNECTING PINS. THIS PROVIDED BETTER PERFORMANCE AT HIGHER RADIO FREQUENCIES. THE CENTRAL METAL SPIGOT PROVIDED AN EARTH CONNECTION, LOCKED THE TUBE IN THE SOCKET, & PROVIDED A MEANS OF INDEXING (REF.1)
Area Notes: Unknown

Details

Markings: ON GLASS: '7A7E/ PHILCO/ REG. U.S. PAT. OFF./ LOKTAL/ MADE IN U.S.A./ 0/1/ WHEN RENEWING/ INSIST ON/ A GENUINE/ PHILCO TUBE'
Missing: N/A
Finish: UNCOLOURED GLASS WITH WHITE PRINTING
Decoration: N/A

CITE THIS OBJECT

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

Sylvania, Vacuum tube, between 1940–1949, Artifact no. 1976.0794, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1976.0794.001/

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