Process device with switching power supply

Details Process device with switching power supply Process device with switching power supply

2007-03-06

2007-03-06

Nguyen, Matthew V. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

10825475

ABSTRACT:
A process field device for coupling to a two wire process control loop includes a field device circuitry and a switching regulator to power the circuitry. A series regulator provides a regulated supply voltage to the switching regulator. A noise filter reduces the amount of noise from the switching regulator which enters the two wire process control loop.

REFERENCES:
patent: 4015609 (1977-04-01), Mensink et al.
patent: 4206297 (1980-06-01), Hoff et al.
patent: 4413224 (1983-11-01), Krupka et al.
patent: 4502318 (1985-03-01), Converse, III et al.
patent: 4606076 (1986-08-01), Davis
patent: 4621551 (1986-11-01), Silverman
patent: 4755773 (1988-07-01), Ohmagari
patent: 4804958 (1989-02-01), Longsdorf
patent: 4833922 (1989-05-01), Frick et al.
patent: 4866435 (1989-09-01), Frick
patent: 4889179 (1989-12-01), Merenda
patent: 4970451 (1990-11-01), Suomalainen
patent: 5087871 (1992-02-01), Losel
patent: 5089974 (1992-02-01), Demeyer et al.
patent: 5146401 (1992-09-01), Bansal et al.
patent: 5179488 (1993-01-01), Rovner
patent: 5184094 (1993-02-01), Kohler
patent: 5187474 (1993-02-01), Kielb et al.
patent: 5245333 (1993-09-01), Anderson et al.
patent: 5258868 (1993-11-01), Jensen et al.
patent: 5333114 (1994-07-01), Warrior et al.
patent: 5360997 (1994-11-01), Watson
patent: 5377090 (1994-12-01), Steigerwald
patent: 5535243 (1996-07-01), Voegele et al.
patent: 5541860 (1996-07-01), Takei et al.
patent: 5606513 (1997-02-01), Louwagie et al.
patent: 5610552 (1997-03-01), Schlesinger et al.
patent: 5659206 (1997-08-01), Taguchi et al.
patent: 5710552 (1998-01-01), McCoy et al.
patent: 5764891 (1998-06-01), Warrior
patent: 5973942 (1999-10-01), Nelson et al.
patent: 6178101 (2001-01-01), Shires
patent: 6313616 (2001-11-01), Deller et al.
patent: 6489755 (2002-12-01), Boudreaux et al.
patent: 6577516 (2003-06-01), Thoren et al.
patent: 6646362 (2003-11-01), Bert et al.
patent: 6806693 (2004-10-01), Bron
patent: 6813318 (2004-11-01), Westfield et al.
patent: 2002/0101748 (2002-08-01), Loechner
patent: 4021258 (1991-01-01), None
patent: 0 529 391 (1998-06-01), None
patent: 2229897 (1990-03-01), None
patent: WO94/01764 (1994-01-01), None
patent: WO 02/09268 (2002-01-01), None
Brochure: “Preliminary LTC1149, LTC1149-3.3., LTC 1149-5; High Efficiency Synchronous Stepdown Switching Regulator” , Linear Technology Corp. Milpitas, CA, pp. 1-16, Nov. 1992.
Ullrich Von Seckendorff and Karen Speers, “Selecting an Inrush Current Limiter,”Electronic Products,Jan. 1995, pp. 25-33.
“Electronics Letters an International Publication,” The Institution of Electrical Engineers, Aug. 29, 1996, vol. 32, No. 18, pp. 1629-1632.
“LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators”, National Semiconductor, pp. 1-12, Jan. 1995.
“LT124/Series High Speed Current Mode Pulse Width Modulators,” Linear Technology LT1241 Series, pp. 1-16, 1992.
A.S. Koslovski, “Fast Active Inrush Current Limiter for Boost-based Resistor Emulators,” 16th International Telecommunications Energy Conference, Intelec '94, Vancouver, B.C., Canada, pp. 649-652, Oct. 30, 1994.
Brochure: “LM494, Pulse Width Modulated Control Circuit”, National Semiconductor, 7 pages, Jun. 1989.
Brochure: “High-Efficiency, +5V Adjustable Step-Down Switching Regulator”, Maxim Integrated Products, 8 pages, Dec. 1991.
MAXIM Data sheet for MAX 631/632/633 CMOS Fixed/Adjustable Output Step-Up Switching Regulators (Mar. 1990).
Article: “Getting Maximum Efficiency from a 4-20 mA transducer Power Supply,” by Bernhard Konrad of Maxim Integrated Products, Sensors, pp. 74-75, Apr. 1996.
Schematic: Power supply circuited used in a process control transmitter which is believed to have been on sale more than one year prior to the filing of the present application.
“Notification of Transmittal of the International Search Report and the Written Opinion”, PCT/US2005/010872.

Affiliated with

Also associated with

Rating

Process device with switching power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3744979