Channel isolation by switched grounds

Details Channel isolation by switched grounds Channel isolation by switched grounds

2005-09-13

2005-09-13

Assouad, Patrick J. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C327S076000, C361S001000, C702S065000, C702S070000

Reexamination Certificate

active

06944559

ABSTRACT:
A signal acquisition instrument, such as an oscilloscope, having an input stage that is referenced to a user's ground is disclosed. Information gathered by the input stage is stored in a storage element powered by a floating power supply that is referenced to the user's ground. After storage, the storage element is disconnected from the floating power and from the user's ground and switched to a power supply referenced to the remainder of the system. FET switching is beneficial, and information can be stored either in an analog format or in a digital format.

REFERENCES:
patent: 4375660 (1983-03-01), Tate et al.
patent: 4876520 (1989-10-01), Kjosness et al.
patent: 5250893 (1993-10-01), Gambill et al.
patent: 5379176 (1995-01-01), Bacon et al.
patent: 5517154 (1996-05-01), Baker et al.
patent: 5594329 (1997-01-01), van Ettinger et al.
patent: 5717154 (1998-02-01), Gulick
patent: 5834973 (1998-11-01), Klatser et al.
patent: 5986637 (1999-11-01), Etheridge et al.
patent: 6278596 (2001-08-01), Simpson
patent: 6487456 (2002-11-01), Masano et al.
patent: 6538420 (2003-03-01), Bald et al.
patent: 2003/0160625 (2003-08-01), Kaufman et al.
patent: 2004/0116094 (2004-06-01), Eastwood
patent: 2004/0162694 (2004-08-01), Ricca et al.
patent: 43 14 484 (1994-11-01), None
patent: 22 77 807 (1994-11-01), None
Sekel, Steve, “Making Oscilloscope Measurements More Accurate, Less Likely to Shock” R & D Magazine, Oct. 1995, XP001090956, *whole document*.

Affiliated with

Also associated with

Rating

Channel isolation by switched grounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3419840