Aaron's Homepage Forum
Aaron's Homepage Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 Electronics
 Telephone
 Telephone distance issues		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

cyberc
New Member

3 Posts
Posted - Oct 09 2008 :  07:44:19 AM  Show Profile  Reply with Quote
Hi

I followed the instructions according to this website http://communication.howstuffworks.com/telephone4.htm

to hook up 2 telephones. It worked perfectly over a few meters. On the same telephone cable over 100 meters - this fails. Should I increase the voltage?

Thanks

Rod

(Edit...Move to Telephone)

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Oct 09 2008 :  8:57:55 PM  Show Profile  Reply with Quote
A telephone exchange applies current-limited 50V to each telephone. It does not connect two telephones in series and does not use a 9V battery in series.
You found a horrible Mickey-Mouse circuit.
Go to Top of Page

cyberc
New Member

3 Posts
Posted - Oct 10 2008 :  09:36:42 AM  Show Profile  Reply with Quote
Thanks

But given it works perfectly over a few meters, it must be an academic exercise to make it work.

I need Mickey Mouse setup as I have no electrical skills.

Rod
Go to Top of Page

Aaron Cake
Administrator

Canada
6718 Posts
Posted - Oct 12 2008 :  10:46:03 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
The phone system floats around 40V on hook, and drops to about 10-12V off hook. You need more voltage and probably a bit more current then a 9V can provide.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Aaron's Homepage Forum © 1995-2020 AARONCAKE.NET Go To Top Of Page
This page was generated in 0.06 seconds. Snitz Forums 2000