Interface scanning circuit

Details Interface scanning circuit Interface scanning circuit

1994-12-29

1997-06-03

Kuntz, Curtis

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 1, 379 22, 379 10, 379 27, 379 32, 379 24, 379384, 379402, H04M 322, H04M 100, H04M 300, H04M 900

Patent

active

056362625

ABSTRACT:
An interface scanning circuit includes a current source at the input to a multiplexer. The current source includes a transistor disposed between two resistors, the second one of which limits reverse current. Also provided are an attenuating network including two resistors, and a low pass filter capacitor associated with the attenuating network.

REFERENCES:
patent: 4022978 (1977-05-01), Connell et al.
patent: 4864598 (1989-09-01), Lynch et al.
patent: 5003573 (1991-03-01), Agah et al.
patent: 5062131 (1991-10-01), Kanare et al.
patent: 5515417 (1996-05-01), Cotreau

Affiliated with

Also associated with

Rating

Interface scanning circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-397730