Non Portuguese Language Readers interested in Power Line Modem

Here I would try to answer some of the frequently asked questions that some of the non portuguese language readers asked :

- Do you have a translation of your project in English ?
  No. I don't. This web page was made in Portuguese, and since I'm not a very good writer in English (you probably have noticed it !), I still don't have a translation of this project in English. Soon I'll get time to write it all, in a more known language, such as English. Anyway if anyone out there, who knows Portuguese and English, and like Power Line Modem features, is willing to transduce it, email-me. I and many non Portuguese Readers, will be very happy.
- A Small Resume of your project ...
  Ok. Here it is :
  I'm a student, whose teacher asked me and a friend of mine to do a study about some Power Line Modem systems, so we did it.
  What did we do ?
  We start studying what did we need, to make a power line modem interface, and after many hours of trying to make an interface, we found that we really should use an IC specially designed for this kind of power line applications. After a little research we found the ST7537 from SGS Thomson®. We study the data-sheets and made a design circuitry to interface a micro-controller from the mcs51 family with another throw the power line.
  When we were ready to make the circuit board, we found the HTH®, who was selling all the material needed and a board for a reasonable price. The teacher realize that we were able to make the board but the time was running out, so we bought some power line modems from them, and we finish the project by making all the interface and programming with the micro-controller.
- Do you sell POWER LINE MODEMs ?
  No. I don't. This was a part of a non profit project. Anyway, in my personal view I think that the PLM from the http://www.hth.com/plm-24 is a very good choice because is easy to assemble, we don't have to worry in finding all the material, their service is great and it's at a reasonable price (Please note that I do not have some kind of relation with HTH®, it's just my personal kind of view.
- Were can I find more information on Power Line Modems?
  You should take a look at some links at the Useful Links / Biography / Short Notes. , especially on the Tomi Engdahl's Electronics Pages , he as got many links is this subject. Anyway in my Project Description you'll find the datasheets from the IC's we did study, so they should be a valuable information from some of you, who are trying to make a power line modem.

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