Ringing signal supply

Details Ringing signal supply Ringing signal supply

H - Electricity

04

M

379/16

H04M 3/02 (2006.01) H04M 19/02 (2006.01)

Patent

CA 1157595

RINGING SIGNAL SUPPLY Abstract of the Disclosure A ringing signal supply, provided at a concentrator remote from a switching office, compares a fraction of its output with a low level reference ringing signal supplied from the switching office to produce an error signal. The error signal, if it exceeds a positive or negative threshold, is gated during respective half-cycles of a rectangular alternating voltage produced by an inverter to control a bidirectional switch to connect the inverter output to the input of a low pass filter, whose output constitutes the output ringing signal. In this manner the instantaneous voltage of the output ringing signal is modified to reduce the error signal, whereby the output ringing signal has the same frequency and waveform as the reference ringing signal. The inverter can produce the alternating voltage commonly for a plurality of ringing signal supplies. - i -

384262

Affiliated with

Also associated with

Rating

Ringing signal supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-839766