power line communication interface

Thread Starter

M0sTaFa

Joined Dec 10, 2010
4
Hi all
I am working on a project in power line communication, and i need to design an interface with the power line.

i am using the ST7540 FSK-Transceiver on a frequency of 132.5 KHz

i can see that i need to design a filter, my problem is do decide the specifications for this filter and how to make this done.
i will be thankful for any informations. ;)
 

retched

Joined Dec 5, 2009
5,207
Be careful. That is the BEST info I can give. You can not learn if your dead.

Obviously you are going to NEED to scope and monitor the signals on the power line, so I would implore you not to die.

Ever. ;)

Use a transformer to isolate the line from your probing setup and yourself. Shock hazards are in almost EVERY aspect of your project.

Filtering out the 50/60hz signal should be relatively easy. Look for line hum filters.
 

Thread Starter

M0sTaFa

Joined Dec 10, 2010
4
thank you every body. :)

i have one more quassion, if any one have used the ST7540-Transciver, i need to know what hapen if it detect signal on both the logic one, and the logic 0 filters, what will be his dession (1 or 0 )????? :( :|

please help me
 
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