Thursday, January 8, 2009
Why don't house phones have to be plugged into an electrical socket?
The phone in my house is just plugged into the phone lines, and nothing else. I don't get how it could send a signal, or could receive one and translate into a voice, without electricity. If anyone knows how this works, please explain it to me, because I am just really confused as to how this works.It does use electricity. The signals carried by the telephone wires are electric current and they carry all the electricity the phone needs.
Here's a place for a good, clear explanation of exactly how it works: http://communication.howstuffworks.com/t...Telephones are connected to Exchanges in a loop manner that means required DC Power 48V is drawn in the line with very less current about 2-3 ma for the instrument, this line not only carries your speech but other added services like internet data streams on them The phone is electric current which is already in the phone line. #If you have any other info about this subject , Please add it free.# |
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Posted by wktd |