Protection arrangements for communications lines

Details Protection arrangements for communications lines Protection arrangements for communications lines

H - Electricity

02

H

317/12.4

H02H 9/04 (2006.01) H04M 3/18 (2006.01) H04Q 1/18 (2006.01)

Patent

CA 1281768

PROTECTION ARRANGEMENTS FOR COMMUNICATIONS LINES Abstract of the Disclosure A protection arrangement for a two-wire line, such as a telephone subscriber line, includes a transformer having two primary windings and a secondary winding. The primary windings are connected in series with the wires of the line with phases such that common mode (longitudinal) currents on the line induce a current in the secondary winding, whereas loop currents do not. The induced current in the secondary winding is amplified and used to trigger a protection device, such as a triac or SCR and diode bridge arrangement, to short circuit the line for the duration of any excessive current thereon.

517830

Affiliated with

Also associated with

Rating

Protection arrangements for communications lines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protection arrangements for communications lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection arrangements for communications lines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1340137