Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input voltage to output current or vice versa
Reexamination Certificate
2007-07-03
2007-07-03
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input voltage to output current or vice versa
C327S320000
Reexamination Certificate
active
11116026
ABSTRACT:
A low power and high efficiency voltage-to-current (V/I) converter designed with few parts and having improved power supply rejection. The V/I converter may include an op-amp, a MOSFET, and a first and second voltage dividers. The first voltage divider circuit may include a first, second, third, and fourth resistors. A source terminal of the MOSFET may be connected to a junction of the third and fourth resistors and the fourth resistor may be connected to a positive supply rail. Also, an inverting input terminal of the op-amp may be coupled to a junction of the second and third resistors. Additionally, the second resistor may be coupled to the first resistor, which may be connected to an input terminal of the V/I converter. The V/I converter typically has very good DC rejection of the power supply because the first and second voltage dividers are designed to have the same ratios.
REFERENCES:
patent: 4216435 (1980-08-01), Ahmed
patent: 4274016 (1981-06-01), Ghahramani
patent: 4290024 (1981-09-01), Yokoyama
patent: 4460837 (1984-07-01), Anderson, Jr.
patent: 4675594 (1987-06-01), Reinke
patent: 4961046 (1990-10-01), DeJager
patent: 5552729 (1996-09-01), Deguchi
patent: 5552730 (1996-09-01), Deguchi
patent: 5598117 (1997-01-01), Deguchi
patent: 5610505 (1997-03-01), Bernardson et al.
patent: 5619125 (1997-04-01), Lakshmikumar
patent: 5917368 (1999-06-01), Tan et al.
patent: 6219261 (2001-04-01), Stochino
Thomas M. Frederiksen, “Intuitive Operational Amplfiers: From Basics to Useful Applications”, McGraw-Hill, New York, NY 1988, 214-215.
Cetrulo Raffaele
Whittington Mark
Hood Jeffrey C.
Lewin Mario J.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
National Instruments Corporation
Wells Kenneth B.
LandOfFree
Low power and high efficiency voltage-to-current converter... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low power and high efficiency voltage-to-current converter..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low power and high efficiency voltage-to-current converter... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3789825