File:EB1922 Telegraph - principle of the relay.jpg
Jump to navigation
Jump to search
Size of this preview: 584 × 599 pixels. Other resolutions: 234 × 240 pixels | 468 × 480 pixels | 732 × 751 pixels.
Original file (732 × 751 pixels, file size: 57 KB, MIME type: image/jpeg)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 21:34, 9 October 2019 | 732 × 751 (57 KB) | Bob Burkhardt | {{Information |description ={{en|1=The principle of the relay may be understood by referring to fig. 3. It will be seen that the ends of the local windings are joined to terminals B and C and their centre to terminal A, which is joined through an adjustable resistance Y to the relay tongue. This resistance is for regulating the local current and keeping it below the value of the steady current through the line coils. Terminal B is connected to earth through a condenser K, while C has a resi... |
File usage
The following 2 pages use this file: