Telephone ringing range extender

Details Telephone ringing range extender Telephone ringing range extender

1981-07-13

1983-04-19

Rubinson, G. Z.

179 81R, 179 16F, H04M 1900

Patent

active

043806880

ABSTRACT:
A circuit arrangement utilized for extending the ringing range of a single party telephone service utilized on long rural line loops where the ringer and a blocking capacitor of the subscriber's telephone instrument has been connected across the tip and ring electrical conductors of the loop includes; a pair of terminals connected to the tip and ring conductors of the subscriber's line, a zener diode connected from one of the electrical conductors with a capacitor connected in parallel therewith. A switching device is connected in series with the parallel connection of the zener diode and capacitor providing a current path to a reference ground. A circuit device responsive to the application of the ringing signal voltage between a reference ground and the other electrical conductor of the subscriber loop activates the switching means to provide a relatively low impedance current path effectively removing one of the electrical conductors from the subscriber loop of the ringing circuit, therefore enabling the ringing voltage to be extended over a loop which is double the length of the normal rural subscriber loop.

REFERENCES:
patent: 3852536 (1974-12-01), Chambers, Jr.
patent: 3992591 (1976-11-01), Ingle

Affiliated with

Also associated with

Rating

Telephone ringing range extender does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Telephone ringing range extender, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telephone ringing range extender will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-838085