Definition of PLC Technology

We are very used to that to pass the signal of Internet, we have to connect through a telephone line (or a cable of optical fiber), a network cable, or Wi-Fi. But there are other options.

Among these we have the great unknown PLC, which uses the electrical network to pass a bidirectional data signal.

The PLC (Power Line Communications) is a technology that makes it possible to provide Internet connection both from the access provider to customers, and by forming a local network at home or office

Although at beginning It was considered a rival of technologies such as ADSL or fiber optic cable, its high cost at all levels and the influence of telecommunications operators relegated it to only local networks.

Telecommunications operators saw in the technology PLC to provide Internet access from broadband, the danger that the electricity companies entered their business field.

To set up a PLC network in our home, we will need special devices, at least two: one that goes to the

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router via a network cable, and plugged into electricity, and another at least to a computer, identical to the previous one

It is a characteristic of PLC devices: on the one hand they have a normal electrical plug and, on the other, a normal Ethernet network connection.

But why would anyone be interested in connecting to a local network via the power line? There are a few reasons:

First of all, because there is no need to lay Ethernet network cable infrastructure

All buildings and houses have an electrical network, no matter how old, since this technology exists and has been implemented since the 19th century, although with greater force since the beginning of the XX. On the other hand, not all buildings have network cable, only the most modern ones.

That is why, if we want to set up an Ethernet network in dependencies that do not have the cable previously last, we will have to do it, even getting to do work if necessary, which is annoying and can be expensive.

Second, because by not circulating the information wirelessly, it is more secure

Since an attacker cannot intercept the signal if he does not physically connect to the network.

The prices of the devices that allow us to connect through the power line are not expensive, and we can find a couple of adapters on the market starting at $ 20-30 a partner.

Although they are not well known solutions, we do find a variety of manufacturers that produce these solutions.

Photos: Fotolia - Nejron / Agnormark

Topics in PLC Technology