Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-09-06
2005-09-06
Nguyen, Long (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S541000, C327S543000
Reexamination Certificate
active
06940335
ABSTRACT:
A start signal (STA) at “H” causes a current to flow through a constant-current portion (10) and control voltages to be produced at nodes (N1, N2) for biasing of a reference voltage portion (20) and an output portion (30), respectively. This allows a predetermined current to flow through the reference voltage portion (20), and a reference voltage (VRF) to be output at a node (N4). With the start signal (STA) at “L”, only a constant-voltage device (22) provides a reference voltage (VRF1), whereas the start signal (STA) at “H” causes the constant-voltage devices (22,23) to be connected in parallel to provide a reference voltage (VRF2). The reference voltage (VRF) is amplified at an output portion having a differential amplifier arranged in the voltage follower connection to output an internal voltage (VOUT) corresponding to the reference voltage (VRF).
REFERENCES:
patent: 5103158 (1992-04-01), Cho et al.
patent: 5686823 (1997-11-01), Rapp
patent: 5856756 (1999-01-01), Sasahara et al.
patent: 5942809 (1999-08-01), Hashimoto
patent: 6060918 (2000-05-01), Tsuchida et al.
patent: 6201436 (2001-03-01), Hur et al.
patent: 6528978 (2003-03-01), Lim
patent: 6529411 (2003-03-01), Tonda et al.
patent: 05-205469 (1993-08-01), None
patent: 07-072943 (1995-03-01), None
patent: 7-110721 (1995-04-01), None
patent: 10-49243 (1998-02-01), None
patent: 2928531 (1999-05-01), None
patent: 2000-148264 (2000-05-01), None
patent: 2000-181558 (2000-06-01), None
patent: 2002-170391 (2002-06-01), None
Nguyen Long
Nixon & Peabody LLP
Studebaker Donald R.
LandOfFree
Constant-voltage circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Constant-voltage circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant-voltage circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3376742