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Class Information
Number: 307/80
Name: Electrical transmission or interconnection systems > Plural supply circuits or sources > Selective or optional sources
Description: Subject matter in which the plural sources or plural supply circuits may be selectively or optionally connected to the load.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7626283 |
Alternative alternating current power supply and method of its use |
Dec. 1, 2009 |
| 7612469 |
Dual-input redundant power supply |
Nov. 3, 2009 |
| 7608946 |
Boosting circuit and integrated circuit having the same |
Oct. 27, 2009 |
| 7605492 |
Power supply system and method for supplying power to a vehicle |
Oct. 20, 2009 |
| 7605498 |
Systems for highly efficient solar power conversion |
Oct. 20, 2009 |
| 7599484 |
Element management system for managing line-powered network elements |
Oct. 6, 2009 |
| 7595569 |
Versatile and intelligent power controller |
Sep. 29, 2009 |
| 7586768 |
Electric power conversion apparatus for plural DC voltage sources and an AC electrical load |
Sep. 8, 2009 |
| 7579716 |
Power storage device and image forming apparatus |
Aug. 25, 2009 |
| 7576600 |
Supply voltage switching circuit |
Aug. 18, 2009 |
| 7564149 |
Sequentially-controlled solar array power system with maximum power tracking |
Jul. 21, 2009 |
| 7557461 |
Power supply device and power supply method |
Jul. 7, 2009 |
| 7554383 |
Chip for non-contact reader/writer having power-supply management function |
Jun. 30, 2009 |
| 7535122 |
Various methods and apparatuses for a multiple input-voltage-level voltage-regulator and a multiple voltage-level DC power supply |
May. 19, 2009 |
| 7535123 |
Apparatus and method for selectively coupling system with a first power supply or a second power supply |
May. 19, 2009 |
| 7525219 |
Providing power to a module |
Apr. 28, 2009 |
| 7523321 |
Information handling system including a battery switching circuit |
Apr. 21, 2009 |
| 7514819 |
Semiconductor switch assembly for pulse power apparatus |
Apr. 7, 2009 |
| 7492215 |
Power managing apparatus |
Feb. 17, 2009 |
| 7482711 |
Auxiliary power switching arrangement for PCI Express, PC's and similar applications |
Jan. 27, 2009 |
| 7468567 |
Power switching apparatus and network equipment |
Dec. 23, 2008 |
| 7456522 |
Line powering of auxiliary equipment |
Nov. 25, 2008 |
| 7449796 |
Power over ethernet controller suitable for multiple modes |
Nov. 11, 2008 |
| 7449866 |
Booster that utilizes energy output from a power supply |
Nov. 11, 2008 |
| 7443053 |
Control circuit and method of electric output modes |
Oct. 28, 2008 |
| 7436087 |
Power line conditioner |
Oct. 14, 2008 |
| 7423893 |
Power supply having two switch-mode power supply units |
Sep. 9, 2008 |
| 7420296 |
Power supply circuit |
Sep. 2, 2008 |
| 7414332 |
Electric power unit and electronics device obtaining power from a plurality of power sources |
Aug. 19, 2008 |
| 7408273 |
Shore power access system |
Aug. 5, 2008 |
| 7378756 |
Battery backup electric plug with female plug |
May. 27, 2008 |
| 7375442 |
Interface circuit for providing a computer logic circuit with first and second voltages and an associated method |
May. 20, 2008 |
| 7362008 |
Electrical interface extension with isolation function |
Apr. 22, 2008 |
| 7362009 |
Chain reaction control circuit for parallel power supply |
Apr. 22, 2008 |
| 7355304 |
X-ray device |
Apr. 8, 2008 |
| 7345458 |
Booster that utilizes energy output from a power supply unit |
Mar. 18, 2008 |
| 7345380 |
Backup power supply system with a null transfer time |
Mar. 18, 2008 |
| 7342328 |
Methods and circuits for tracking and sequencing multiple power supplies |
Mar. 11, 2008 |
| 7301248 |
Control method for voltage boosting circuit |
Nov. 27, 2007 |
| 7285874 |
Automatic sensing power systems and methods |
Oct. 23, 2007 |
| 7286005 |
Supply voltage switching circuit |
Oct. 23, 2007 |
| 7279854 |
Charge pump interface circuit |
Oct. 9, 2007 |
| 7276815 |
Power management system |
Oct. 2, 2007 |
| 7276887 |
Power supply circuit |
Oct. 2, 2007 |
| 7262520 |
Robust power distribution systems and methods |
Aug. 28, 2007 |
| 7258572 |
Modular DC power step down adapter |
Aug. 21, 2007 |
| 7254002 |
Reverse conduction protection method and apparatus for a dual power supply driver |
Aug. 7, 2007 |
| 7253589 |
Dual-source CMOS battery charger |
Aug. 7, 2007 |
| 7245469 |
DC backup power supply device and method for diagnosing the same |
Jul. 17, 2007 |
| 7239045 |
Power distribution system and control system for same |
Jul. 3, 2007 |
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