Noise suppression system and method

Details Noise suppression system and method Noise suppression system and method

1991-02-27

1993-05-11

Swann, III, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

333 12, 340524, 340533, 340587, G08B 1706, G08B 2500

Patent

active

052105237

ABSTRACT:
A broadband transformer with one-to-one turns ratio provides common mode noise suppression in a transmission line. One winding of the transformer is connected in series with each of the two wires of the transmission line. The transmission line is connected between a multiplexer device, coupled in turn to a plurality of spaced-apart fire detectors, and an output fire alarm control panel. Common mode noise on the transmission line results in only a very small noise current appearing at the central fire alarm panel. As a result, a noise rejection for the system is increased.

REFERENCES:
patent: 3209342 (1965-09-01), Ward
patent: 3778759 (1973-12-01), Carroll
patent: 4259705 (1981-03-01), Stifter
patent: 4754262 (1988-06-01), Hackett et al.
patent: 4871999 (1989-10-01), Ishii et al.
patent: 5083101 (1992-01-01), Frederick
patent: 5113159 (1992-05-01), Andriaenssens et al.

Affiliated with

Also associated with

Rating

Noise suppression system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1354070