Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2006-06-27
2006-06-27
Nguyen, Patricia (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S251000, C330S20700P
Reexamination Certificate
active
07068097
ABSTRACT:
Methods and apparatus are provided for driving a power amplifier load, such as a loudspeaker. The apparatus comprises a processor-controlled drive assembly configured as an H-bridge system. Groupings of half-bridge assemblies are connected to the load in an H-bridge structure, and are operated in pulse-width-modulation mode by the processor. The half-bridge assembly groupings receive time sliced commands from the processor in order to output a composite output signal to the load at a frequency higher than the operating frequency of a single half-bridge assembly. In general, the composite output frequency is the product of the individual half-bridge assembly operating frequency and the number of half-bridge assemblies in a grouping. As such, high frequency and high power output levels can be achieved using standard low-cost components.
REFERENCES:
patent: 5291194 (1994-03-01), Ames
patent: 5566063 (1996-10-01), Gerster et al.
patent: 5646366 (1997-07-01), O'Connell
patent: 5748102 (1998-05-01), Barron
patent: 5990735 (1999-11-01), Sigmon et al.
patent: 6140873 (2000-10-01), Van Groningen
patent: 6166602 (2000-12-01), Steigerwald et al.
patent: 6172550 (2001-01-01), Gold et al.
patent: 6331759 (2001-12-01), Atmur
patent: 6469916 (2002-10-01), Kerkman et al.
patent: 6482054 (2002-11-01), Treaster et al.
patent: 6536365 (2003-03-01), Horton
patent: 6600695 (2003-07-01), Nugent et al.
patent: 6642683 (2003-11-01), Atmur
patent: 6788137 (2004-09-01), Morita
patent: 2003/0001538 (2003-01-01), Atmur
patent: 2003/0103771 (2003-06-01), Atmur et al.
patent: 2003/0218438 (2003-11-01), Atmur
Helduser, S., and Bonefeld, R.,Active Damping in Civil Engineering Using Hydraulic Actuators, Institute of Fluid Power and Motion Control, Dresden University of Technology, Germany.
Stekl, Petr, and Kubiczek, Zdenek,Low-Cost, 3-Phase, AC Motor Control System with Power Factor Correction Based on MC68HC908MR32, Motorola Czech System Application Laboratory, Roznov pod Radhostem, Czech Republic, 2001.
De Mendonca, R.G., Neto, L. Martins, Camacho, J.R.,The Oscillating Torque On A Three-Phase Induction Generator Connected To A Single-Phase Distribution System, Electrical Machines Laboratory, Electrical Engineering Department Universidade Federal de Uberlandia, Brazil.
Visinka, Radim,Low Cost 3-Phase AC Motor Control System Based On MC68HC908MR24, Roznov System Application Laboratory, Motorola, Czech Republic, 1998.
Brushless DC (BLDC) Motor, (online), Retrieved from Internet: <URL: www.motorola.com/webapp/sps/site/overview>.
3-Phase AC Induction Motor, (online), Retrieved from Internet: <URL www.motorola.com/webapp/sps/site/overview>.
Ingrassia Fisher & Lorenz P.C.
Nguyen Patricia
The Boeing Company
LandOfFree
High frequency high power H-bridge power amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High frequency high power H-bridge power amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency high power H-bridge power amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3614850