RCA Patch Cables
If you have a television at home with any device attached to it, such as a video, a DVD player or a music system, you will surely know what an RCA patch cable is. They are the cables that go into the black, red and yellow points on the television and these devices in order to make the connections. RCA is a cable standard developed by the Radio Corporation of America (hence the acronym) and was originally intended to connect phonographs to amplifiers. Of course, today, the use of the RCA patch cable has become much more widespread than it was first developed for.
Technically speaking, the RCA patch cable is a cable that is used to transmit both audio and video signals. Though the signals are passed on in a composite manner, the cables themselves are different. The three points on the devices for the RCA patch cable connection indicate that. From the three RCA points, the red and black (sometimes white) ones are for the right and left stereo. These are the points that are reserved for only transmitting the analog audio signals. The middle connector is usually the yellow one. This point is for the composite video connection. Hence, when all the three RCA points are properly connected to the respective devices, both audio and video transmissions can be easily effectuated.
The RCA patch cables can be easily identified by their plugs. These plugs have a pin connector (male) on their ends, which is surrounded by a ring. The device where the plug is supposed to go will have a similar groove with a metallic ring, made at the right size to fit in the RCA connector. In some devices, the RCA patch cables could be inbuilt into the device. Plugging the RCA patch cables is very easy. All that has to be done is to push in the connector into the plug, where it stays due to the proper groove size.
RCA cables are very easy to use, because they are color coded for easy identification. The colors of the cables correspond to the colors on the receiving appliance. The colors, as mentioned before, are red and black (or white) for audio and yellow for composite video. However, some high end devices would require several other RCA connections, and that requires many more colors. Ordinarily, televisions have the three colored RCA patch cable connections. All televisions have the RCA sockets somewhere on their bodies. They are always present at the back, but some televisions will have additional connections in the front too. These are the places where devices such as music systems, digital cameras, videos, DVD players, etc. are meant to be connected. Using the RCA patch cable is very easy, since they allow for plug and play connections. They can be done even by children of the house, since they are easily color coded for identification. Today, the maximum use of these RCA patch cables is in households for connecting different audio and visual appliances to televisions.
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