Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2011-06-07
2011-06-07
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S075000, C327S076000, C327S307000
Reexamination Certificate
active
07956651
ABSTRACT:
A method and circuit for detecting a current and compensating for an offset voltage. The circuit includes two comparators where one of the comparators has two input terminals and the other comparator has three input terminals. An input terminal of each of the two comparators are commonly connected together, the other input terminal of the two-input comparator is coupled for receiving a first reference voltage, and a second input terminal of the three-input comparator is coupled for receiving a second reference voltage. During a first portion of the period of a sense signal the two comparators operate in a sensing mode and during a second portion of the period of the sense signal the comparator having the three input terminals operate in a current nullification mode or an offset voltage compensation mode. An offset compensation signal is generated during the second portion of the sense signal.
REFERENCES:
patent: 4859873 (1989-08-01), O'Shaughnessy et al.
patent: 5210527 (1993-05-01), Smith et al.
patent: 5488322 (1996-01-01), Kaplinsky
patent: 5614857 (1997-03-01), Lim et al.
patent: 5969557 (1999-10-01), Tanzawa et al.
patent: 6031389 (2000-02-01), Fotouhi et al.
patent: 6418039 (2002-07-01), Lentini et al.
patent: 7183834 (2007-02-01), Nadd et al.
On Semiconductor, Secondary Side Synchronous Flyback Controller, NCP402 Data Sheet, Feb. 2008—Rev. 2, Semiconductor Components Industries, L.L.C., 2008.
Ptacek Karel
Stuler Roman
Sukup Frantisek
Dover Rennie William
Semiconductor Components Industries LLC
Wells Kenneth B.
LandOfFree
Method for detecting a current and compensating for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting a current and compensating for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting a current and compensating for an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2725905