Polarized 'guillotine' relay, 1862-1866
- maker:
- William Stratford Andrews
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-SA 4.0
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This image is released under a CC BY-SA 4.0
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicensePolarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, brought out by W Andrews, England
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
telecommunications; communications; electrical; electrical relay; relay; guillotine relay; guillotine; William Stratford Andrew; Stratford Andrew; Andrew; Andrew's guillotine relay; wood; metal; 1864; 1860's; 19th Century
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polarized 'guillotine' relay, designed by W Andrews, England, 1862-1866.
A relay is an electrically operated switch, and allowed weak telegraph signals to be boosted by a local power source. Polarised electrical relays work by using an armature in between the poles of a permanent magnet in order to increase sensitivity. This one has an armature in the form of a semicircular magnet, placed horizontally and vibrating between two electromagnets. The current passes through both sets of coils, which are wound so that one attracts, and the other repels the armature.
Details
- Category:
- Telecommunications
- Object Number:
- 1876-1490
- Materials:
- wood (unidentified), brass (copper, zinc alloy) and glass
- Measurements:
-
overall: 225 mm x 280 mm x 185 mm, 3.55kg
- type:
- electric switch
- credit:
- From William Stratford Andrews
