(Download) "Cyclopedia of Telephony & Telegraphy Vol. 1" by Charles Thom # Book PDF Kindle ePub Free
eBook details
- Title: Cyclopedia of Telephony & Telegraphy Vol. 1
- Author : Charles Thom
- Release Date : January 14, 2005
- Genre: Fiction & Literature,Books,
- Pages : * pages
- Size : 3274 KB
Description
The main gain in the common-battery system of supply is the simplification of the subscribers' instruments, doing away with the local batteries and the magneto generators and the concentration of all these many sources of current into one single source at the central office. A considerable saving is thus effected from the standpoint of maintenance since the simpler common-battery instrument is not so likely to get out of order and therefore does not have to be visited so often for repairs and the absence of local batteries of course, makes the renewal of the battery parts by members of the maintenance department unnecessary.
 "Cyclopedia of Telephony & Telegraphy Vol. 1" by Charles Thom # Book PDF Kindle ePub Free){kind=link}
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