Circuit for switching between balanced networks

Details Circuit for switching between balanced networks Circuit for switching between balanced networks

1986-11-14

1988-05-03

Ng, Jin F.

Telephonic communications

Subscriber line or transmission line interface

Hybrid circuit

379398, 307494, 333 32, H04M 176

Patent

active

047425407

ABSTRACT:
A circuit for switching one of two impedance networks to a line carrying AC signals comprising a unity gain amplifier having differential inputs connected across the first one of the impedance networks, and one of the differential inputs and an output connected across the second one of the impedance networks, and a microprocessor control terminal connected to the other of the differential inputs for applying one of either a high impedance or AC ground thereto. The circuit is small, inexpensive, requires no electromechanical parts, and takes up very little circuit board area.

REFERENCES:
patent: 4100515 (1978-07-01), Gupta
patent: 4275270 (1981-06-01), de la Plaza
patent: 4276450 (1981-06-01), Chowaniec
patent: 4361732 (1982-11-01), Wood
patent: 4677667 (1987-06-01), Burns

Affiliated with

Also associated with

Rating

Circuit for switching between balanced networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for switching between balanced networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for switching between balanced networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1511241