Vacuum tube
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1969.0866.001
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- OBJECT TYPE
- DETECTOR/AMPLIFIER
- DATE
- 1918
- ARTIFACT NUMBER
- 1969.0866.001
- MANUFACTURER
- M.O. VALVE CO. LTD.
- MODEL
- R4A
- LOCATION
- England
More Information
General Information
- Serial #
- 42235
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- TUNGSTEN FILAMENT/ NICKEL ANODE/ OTHER METAL/ GLASS ENVELOPE/ FABRIC WIRE COVER/ CARDSTOCK
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 8.3 cm
- Width
- 5.1 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
- MO VALVE
- Country
- England
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- 1920'S
- Canada
-
Unknown - Function
-
TO DETECT & AMPLIFY RADIO WAVES IN A RECEIVER - Technical
-
REDESIGN OF TYPE R4 IN ORDER TO REDUCE THE FILAMENT POWER REQUIRED/ ONE OF THE FIRST 'HARD' OR HIGH VACUUM TUBES DEVELOPED - Area Notes
-
Unknown
Details
- Markings
- ETCHED ON GLASS OF TUBE: 'OSRAM/ G.E.C./ MADE IN/ ENGLAND/ R.4 A./ VALVE/ WIRELESS RECEIVING/ R.4 A./ PATT. NO. 4411/ A.20114'/ PRINTING ON BOX INCLUDES: '"OSRAM"/ G.E.C./ MADE IN/ ENGLAND/ WIRELESS RECEIVING/ R.4 A/ PATTERN NO. 4411/ A.'
- Missing
- WIRE COVERING
- Finish
- UNCOLOURED GLASS ENVELOPE/ LIGHT GREENWITH BLUE PRINTING/ BLACK RIBBON & WIRE COVERING
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
M.O. VALVE CO. LTD., Vacuum tube, circa 1918, Artifact no. 1969.0866, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1969.0866.001/
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