nolram Posted November 20, 2005 Report Share Posted November 20, 2005 hello everyone! I want to ask somebody out there to shed light on my questions: Why is it that landline telephone accepts -48Vdc? Why is it Quote Link to comment Share on other sites More sharing options...
nitrojunx Posted November 22, 2005 Report Share Posted November 22, 2005 this is to avoid cathodic effect, that is -48volts with respect to ground... Quote Link to comment Share on other sites More sharing options...
nolram Posted November 22, 2005 Author Report Share Posted November 22, 2005 thanks! :D I would be very appreciative of anybody who can give me links to tutorials explaining this... thanks again. Quote Link to comment Share on other sites More sharing options...
walid Posted November 29, 2005 Report Share Posted November 29, 2005 you can go to this link it is a rich text about telephoneshttp://www.epanorama.net/links/telephone.html I hope this may help you Quote Link to comment Share on other sites More sharing options...
nolram Posted December 6, 2005 Author Report Share Posted December 6, 2005 thanks walid! :D Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.