Barclay-type sunflower relay

Barclay-type sunflower relay

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Description
Telegraph relays amplify an electrical signal in a telegraph line. Telegraph messages travel as a series of electrical pulses through a wire from a transmitter to a receiver. The pulses fade in strength as they travel through the wire, limiting the distance a message can be sent. Relays remedy that problem by detecting a weak signal and automatically re-transmitting that signal down the line using a local power source.
Location
Currently not on view
Object Name
sunflower relay
relay
telegraph relay
Maker
Western Union Corporation
Physical Description
metal (overall material)
Measurements
overall: 11 in x 11 in x 4 3/4 in; 27.94 cm x 27.94 cm x 12.065 cm
ID Number
EM.331778
collector/donor number
40-01
catalog number
331778
accession number
294351
Credit Line
from Western Union Corporation
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Work and Industry: Electricity
Communications
Data Source
National Museum of American History
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