November 2007
Intermediate to advanced
736 pages
46h 32m
English
Content preview from Consumer Electronics
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REED RELAY AND CROSSBAR EXCHANGES
A reed relay is a device based on the fact that an electric current passing through a coil of wire produces an electromagnet, with the ends of the coil having opposite magnetic polarities, as shown in Fig. 38.10.
These two strips can be used to form a switch in another electrical circuit. The two strips are placed inside a glass envelope containing an inert gas, and the overlapping portions are coated with gold to give a good reliable electrical contact. The whole assembly contained by the glass envelope is called a reed insert, since it is placed inside the electromagnet coil.
Fig. 38.10 Coil of wire as ...
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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.