Short circuit detector for shield conductor in a fieldbus...

Details Short circuit detector for shield conductor in a fieldbus... Short circuit detector for shield conductor in a fieldbus...

2006-05-16

2006-05-16

Mullen, Jr., Thomas J. (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S651000, C324S509000, C324S539000, C324S541000

Reexamination Certificate

active

07046157

ABSTRACT:
A short circuit detector for a fieldbus network which includes power/data wires that are typically positive and negative, respectively, and a shield conductor connected to a ground includes first and second high-impedance semiconductor circuits coupled between each of the leads and the shield conductors. Both circuits may either have a dedicated alarm indicator which indicates the presence of a short circuit between that conductor and the shield and/or may be coupled together to an alarm circuit which activates an alarm whenever a short circuit exists between either of the power/data leads and the shield conductor. The alarm circuit may have a ground which is isolated from the shield ground and may thus employ an isolation device such as an opto-isolator.

REFERENCES:
patent: 3736503 (1973-05-01), Coleman et al.
patent: 4227146 (1980-10-01), Hodge
patent: 5218307 (1993-06-01), Hiller
patent: 5285163 (1994-02-01), Liotta
patent: 5477152 (1995-12-01), Hayhurst
patent: 5631795 (1997-05-01), Koyama
patent: 6323652 (2001-11-01), Collier et al.
patent: 3432567 (1985-12-01), None
patent: 09288138 (1997-11-01), None

Affiliated with

Also associated with

Rating

Short circuit detector for shield conductor in a fieldbus... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Short circuit detector for shield conductor in a fieldbus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Short circuit detector for shield conductor in a fieldbus... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3653018