November 2007
Intermediate to advanced
736 pages
46h 32m
English
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TWO-MOTION SELECTORS
The same sort of numbering scheme can be provided on a step-by-step basis, by a different type of electromechanical switch called a two-motion selector. The principle is illustrated in Figs. 38.7 (a) and (b). The bank of fixed contacts now contains 10 semi-circular arcs, each having 10 contacts, and arranged above each other. The moving contact or wiper can be connected to any one of the 100 bank contacts by first moving vertically to the appropriate level, and then rotating horizontally to a particular contact on that level. The 100 outlets are numbered from 11 to 00. The diagram symbol used to illustrate the 100-outlet two-motion selector is shown in Fig. 38.7(c) .
As with the uniselector arrangements, the two-motion selector ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.