Vacuum tube

Use this image

Can I reuse this image without permission? Yes

Object images on the Ingenium Collection’s portal have the following Creative Commons license:

Copyright Ingenium / CC BY-NC-ND (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

ATTRIBUTE THIS IMAGE

Ingenium, 1966.0643.001
Permalink:

Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.

DOWNLOAD IMAGE

PURCHASE THIS IMAGE

This image is free for non-commercial use.

For commercial use, please consult our Reproduction Fees and contact us to purchase the image.

OBJECT TYPE
SHARP CUTOFF/RF AMPLIFIER
DATE
1936
ARTIFACT NUMBER
1966.0643.001
MANUFACTURER
MULLARD WIRELESS SERVICE CO. LTD.
MODEL
EF37A
LOCATION
England

More Information


General Information

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

Dimensions

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

Length
9.8 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
MULLARD
Country
England
State/Province
Unknown
City
Unknown

Context

Country
England
State/Province
Unknown
Period
PROBABLY 1940'S
Canada
Unknown
Function
USED AS A RADIO FREQUENCY AMPLIFIER IN A RADIO RECEIVER
Technical
ONE OF THE 'RED E' SERIES INTRODUCED BY MULLARD IN THE UK. THE TUBES HAD A 6.3V HEATER & WERE PATED RED TO DISTINGUISH THEM FROM THE EARLIER 4V SERIES. THEY MARKED A TURNING POINT IN EUROPEAN TUBE DESIGN BECAUSE OF THE GREATLY REDUCED PHYSICAL SIZES OF ALL TYPES EXCEPT OUTPUT TUBES & RECTIFIERS (REF.2).
Area Notes
Unknown

Details

Markings
PRINTED ON ENVELOPE: 'Mullard/ EF37A/ BVA/ BRITISH MADE/ DA'/ PRINTED ON SHELL: 'EP1/ B5J'
Missing
N/A
Finish
GLASS PAINTED RED/ BLACK BASE
Decoration
N/A

CITE THIS OBJECT

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

MULLARD WIRELESS SERVICE CO. LTD., Vacuum tube, after 1936, Artifact no. 1966.0643, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1966.0643.001/

FEEDBACK

Submit a question or comment about this artifact.

More Like This


...
Vacuum tube

1966.0642.001

Object

...
Vacuum tube

1982.0804.001

Object

...
Vacuum tube

1989.0285.001

Object

...
Vacuum tube

1966.0644.001

Object

...
Vacuum tube

1978.0872.001

Object

...
Vacuum tube

1986.0564.001

Object

...
Vacuum tube

1966.0490.001

Object

...
Vacuum tube

1986.0574.001

Object

...
Vacuum tube

1986.0595.001

Object

...
Vacuum tube

1976.0105.001

Object

...
Vacuum tube

1966.0489.001

Object

...
Vacuum tube

1986.0585.001

Object

...
Vacuum tube

1966.0488.001

Object

...
Vacuum tube

1998.0767.001

Object

...
Vacuum tube

1969.0860.001

Object

...
Vacuum tube

1966.0618.001

Object

...
Vacuum tube

1976.0099.001

Object

...
Vacuum tube

1971.0522.001

Object

...
Vacuum tube

1969.0799.001

Object

...
Vacuum tube

1982.0692.001

Object

...
Vacuum tube

1998.0789.001

Object

...
Vacuum tube

1992.1091.001

Object

...
Vacuum tube

1966.0645.001

Object

...
Vacuum tube

1966.0409.001

Object

...
Vacuum tube

1967.1081.001

Object

...
Vacuum tube

1969.0534.001

Object

...
Vacuum tube

1967.0939.001

Object

...
Vacuum tube

1974.0049.001

Object

...
Vacuum tube

1967.0942.001

Object

...
Vacuum tube

1982.0799.001

Object

...
Vacuum tube

1966.0674.001

Object

...
Vacuum tube

1992.1144.001

Object

...
Vacuum tube

1973.0104.001

Object

...
Vacuum tube

1998.0627.001

Object

...
Vacuum tube

1989.0286.001

Object

...
Vacuum tube

1966.0680.001

Object

...
Vacuum tube

1972.0071.001

Object

...
Vacuum tube

1993.0107.001

Object

...
Vacuum tube

1982.0800.001

Object

...
Vacuum tube

1966.0627.001

Object

...
Vacuum tube

1969.0866.001

Object

...
Vacuum tube

1966.0377.001

Object

...
Vacuum tube

1966.0673.001

Object

...
Vacuum tube

1998.0766.001

Object

...
Vacuum tube

1982.0795.001

Object

...
Vacuum tube

1994.0266.001

Object

...
Vacuum tube

1994.0275.001

Object

...
Vacuum tube

1966.0619.001

Object

...
Vacuum tube

1966.0373.001

Object

...
Vacuum tube

1966.0617.001

Object

...
Vacuum tube

1989.0274.001

Object

...
Vacuum tube

1975.0352.001

Object

...
Vacuum tube

1994.0256.001

Object

...
Vacuum tube

1966.0375.001

Object

...
Vacuum tube

1969.0486.001

Object

...
Vacuum tube

1992.1127.001

Object

...
Vacuum tube

1994.0255.001

Object

...
Vacuum tube

1966.0671.001

Object

...
Vacuum tube

1994.0277.001

Object

...
Vacuum tube

1992.1139.001

Object

...
Vacuum tube

1993.0114.001

Object

...
Vacuum tube

1974.0686.001

Object

...
Vacuum tube

1966.0355.001

Object

...
Vacuum tube

1966.0382.001

Object

...
Vacuum tube

1976.0522.001

Object

...
Vacuum tube

1969.1271.001

Object

...
Vacuum tube

1992.1136.001

Object

...
Vacuum tube

1966.0388.001

Object

...
Vacuum tube

1985.0949.001

Object

...
Vacuum tube

1993.0063.001

Object

...
Vacuum tube

1982.0805.001

Object

...
Vacuum tube

1986.0756.001

Object

...
Vacuum tube

1967.0994.001

Object

...
Vacuum tube

1966.0672.001

Object

...
Vacuum tube

1986.0757.001

Object

...
Vacuum tube

1966.0625.001

Object

...
Vacuum tube

1998.0778.001

Object

...
Vacuum tube

1966.0584.001

Object

...
Vacuum tube

1976.0121.001

Object

...
Vacuum tube

1966.0394.001

Object

...
Vacuum tube

1993.0067.001

Object

...
Vacuum tube

1976.0090.001

Object

...
Vacuum tube

1975.0684.001

Object

...
Vacuum tube

1988.0353.001

Object

...
Vacuum tube

1976.0800.001

Object

...
Vacuum tube

1976.0119.001

Object

...
Vacuum tube

1966.0557.001

Object

...
Vacuum tube

1996.0393.001

Object

...
Vacuum tube

1996.0395.001

Object

...
Vacuum tube

1992.1064.001

Object

...
Vacuum tube

1966.0654.001

Object

...
Vacuum tube

1966.0513.001

Object

...
Vacuum tube

1992.1130.001

Object

...
Vacuum tube

1969.0528.001

Object

...
Vacuum tube

1966.0565.001

Object

...
Vacuum tube

1993.0106.001

Object

...
Vacuum tube

1972.0054.001

Object

...
Vacuum tube

1971.0666.001

Object

...
Vacuum tube

1993.0105.001

Object

...
Vacuum tube

1982.0707.001

Object