Relay
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1971.0465.001
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- OBJECT TYPE
- NON POLAR/250 OHMS
- DATE
- 1920–1929
- ARTIFACT NUMBER
- 1971.0465.001
- MANUFACTURER
- General Radio Co.
- MODEL
- 507A
- LOCATION
- Cambridge, Massachusetts, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- BAKELITE BASE/ SOFT STEEL CORE/ COPPER WIRE WOUND COIL/ THUMBSCREW CONNECTORS
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 10.6 cm
- Width
- 7.7 cm
- Height
- 4.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Radio
- Sub-Category
- N/A
Manufacturer
- AKA
- General Radio
- Country
- United States of America
- State/Province
- Massachusetts
- City
- Cambridge
Context
- Country
- North America
- State/Province
- Unknown
- Period
- 1920 - 1930
- Canada
-
Unknown - Function
-
GENERAL PURPOSE RELAY USED TO REMOTELY SWITCH ON AN ELECTRIC CURRENT. FOR INSTANCE, 28 VOLTS DIRECT CURRENT MIGHT BE APPLIED TO THE COIL VIA A TELEGRAPH KEY WHICH WOULD CAUSE CONTACT CLOSURE TO APPLY 1000 VOLTS DC TO A RADIO TRANSMITTER. - Technical
-
IMPROVED THE QUALITY AND CAPACITY OF TELEGRAPH COMMUNICATION. - Area Notes
-
Unknown
Details
- Markings
- MANUFACTURER'S PLATE ON TOP OF BASE READS: 'NON POLAR RELAY/ TYPE 507A/ 250 OHMS/ GENERAL RADIO CO./ CAMBRIDGE, MASS.'
- Missing
- N/A
- Finish
- NATURAL
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
General Radio Co., Relay, circa 1920–1929, Artifact no. 1971.0465, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1971.0465.001/
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