Vacuum tube

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Ingenium, 1984.0179.001
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OBJECT TYPE: BROADCASTING/MERCURY VAPOUR
DATE: 1935–1942
ARTIFACT NUMBER: 1984.0179.001

MANUFACTURER: ENGLISH ELECTRIC VALVE CO. LTD.
MODEL: AH205 857B
LOCATION: England

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: GLASS ENVELOPE/ PLATED COPPER ANODE CAP/ PLATED COPPER BASE, PROBABLY TANTALUM ANODE/ METAL FILAMENT SUPPORT/SHIELD STRUCTURE/ TUNGSTEN FILAMENT/ MERCURY/ WOOD SUPPORT FRAME WITH CLOTH STRAPS

Dimensions

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

Length: 35.7 cm
Width: 35.7 cm
Height: 64.6 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

AKA: ENGLISH ELECTRIC
Country: England
State/Province: Unknown
City: Unknown

Context

Country: Worldwide
State/Province: Unknown
Period: 1937-1970
Canada: Unknown
Function: USED IN THE HIGH VOLTAGE POWER SUPPLY OF A TRANSMITTER TO CONVERT ALTERNATING CURRENT TO DIRECT CURRENT. DEPENDING ON THE DESIGN, A MINIMUM OF TWO TUBES OF THIS TYPE WOULD BE USED
Technical: TYPE SAMPLE
Area Notes: Unknown

Details

Markings: PRINTEDON GLASS: 'ENGLISH ELECTRIC VALVE CO. LTD. MADE IN ENGLAND [LOGO IN CENTRE]/ AH205 857B/ [?]729/ 28'/ HANDWRITTEN ON THE FILAMENT SUPPORT SYSTEM: 'Q 1263/ YE'/ STENCILED ON CASE: 'MADE IN UK/ AH.205/ 857B/ GLASS/ KEEP UPRIGHT/ CRT. NO./ 2903/ L12143'/ LABEL ON CRATE TOP: 'ORA GROUP-C/ MERCURY VAPOUR/ TUBES/ 1 GRAM'
Missing: N/A
Finish: EXTERNAL METAL, PLATED/ GLASS AND OTHER MATERIALS, NATURAL FINISH/ UNCOLOURED GLASS
Decoration: N/A

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

ENGLISH ELECTRIC VALVE CO. LTD., Vacuum tube, between 1935–1942, Artifact no. 1984.0179, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1984.0179.001/

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