Safety PLC

Details Safety PLC Safety PLC

2006-07-27

2009-06-30

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07554782

ABSTRACT:
A safety PLC having duplex power supply circuits, includes: a first output-stage transistor; a first DC power supply that drives the first output-stage transistor; a second output-stage transistor; a second DC power supply that drives the second output-stage transistor; a signal transfer path that includes a resistor and connect the first output-stage transistor to the second output-stage transistor; and a pair of overvoltage protection units, each of which is disposed between a pair of output terminals of the corresponding one of the first and second DC power supplies and restricts the maximum value of an output potential difference between the pair of output terminals.

REFERENCES:
patent: 6924533 (2005-08-01), Takemura et al.
patent: 6968283 (2005-11-01), Matsumura et al.
patent: 7061738 (2006-06-01), Fey et al.
patent: 2004/0080880 (2004-04-01), Yang et al.
patent: 2007/0274013 (2007-11-01), Gschossmann et al.
patent: 2 741 756 (1997-05-01), None
patent: 2002-358106 (2002-12-01), None

Affiliated with

Also associated with

Rating

Safety PLC does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4096262