Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7545055 | Multi-pair aggregate power distribution Apparatus and method for transmitting over non-adjacent multiple conducting pairs and aggregating powers from the conducting pairs to power remote electronic devices at an end station include, at a line termination (LT), a plurality of power transmitting circuits co... | 06/09/2009 |
| 7528503 | Load shedding control for cycled or variable load appliances Control of a variable output appliance of a small energy consumer participating in an electrical load shedding program. A baseline operating characteristic of the appliance is determined for ordinary operation (such as in an absence of any load shedding requirements... | 05/05/2009 |
| 7397149 | Method and a system for monitoring and regulating the power consumed by a transport system A method of monitoring and regulating the power and the energy consumed by a transport system including electrically propelled vehicles, said transport system including a power supply system including one or more power supply substations connected to an external ele... | 07/08/2008 |
| 7323794 | Independent control of output current balance between paralleled power units An information handling system power supply system has a plurality of power supply units (PSUs) with outputs connected in parallel and a current balancing circuit for equalizing current from these outputs. A pseudo output current value may be added to the actual out... | 01/29/2008 |
| 7256516 | Battery charging system and method A charging system for simultaneously charging the batteries of a plurality of battery powered vehicles. The charging includes one or more DC-DC power converters having one or more charging ports configured to plug into the batteries. The DC-DC power converters are e... | 08/14/2007 |
| 7138730 | Topologies for multiple energy sources A system and method for converting power are disclosed. Briefly described, one embodiment comprises a first power source having a first-source positive terminal and a first-source negative terminal; a second power source having a second-source positive terminal and ... | 11/21/2006 |
| 6985799 | Energy storage modules and management system A system to manage energy may include a plurality of energy storage modules. Each energy storage module may include a power converter couplable to a link and a power converter controller to control operation of the power converter. Each energy storage module may als... | 01/10/2006 |
| 6956734 | Portable computer equipped with add-on battery A portable computer includes a portable computer body having an upper surface, a lower surface and a lower front edge thereof. An add-on battery is detachable mounted on the lower surface of the portable computer body and has a wedge-shaped portion corresponding to ... | 10/18/2005 |
| 6664658 | Power limiting system and method in a multiple power source environment A power limiting system and method are provided for limiting power delivered to a common bus in a one or multi-frame tape library environment. The system includes one or more frames coupled to a common bus, each of which is capable of delivering power to ... | 12/16/2003 |
| 6654667 | Production apparatus that detects irregularities in a mounting line and controls power consumption, and a control method and control program for the production apparatus In an active mode, a controller switches an operation mode from the active mode to a suspend mode when an acceptance preparation completion signal is not received from downstream or when a circuit board is discharged downstream, if a discharge preparation... | 11/25/2003 |
| 6608402 | Circuits and methods for controlling load sharing by multiple power supplies Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power sup... | 08/19/2003 |
| 6465909 | Circuits and methods for controlling load sharing by multiple power supplies Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power sup... | 10/15/2002 |
| 6278201 | Power sharing among multiple power supplies in a material handling system An apparatus for providing power to an automated material handling system that includes a track on which a plurality of electrically powered material transport vehicles are mounted comprises a plurality of current-limited power sources each having a power... | 08/21/2001 |
| 5942812 | Proximity detector with a stable current source A proximity detector having a power switch 30 which is switched as a function of the approach of an object. The detector includes a MOS depletion transistor T1 which connects one of the terminals 15 of the detector to a control input of a power switch 30 ... | 08/24/1999 |
| 5708590 | Method and apparatus for real time recursive parameter energy management system A new method and apparatus for recursive parameter estimation which closely approximates actual values is taught. Briefly stated, the within invention estimates impedance parameters of network branches in both on-line and off-line modes, providing accurat... | 01/13/1998 |
| 5627760 | Method and apparatus for real time recursive parameter energy management system A new method and apparatus for recursive parameter estimation which closely approximates actual values is taught. Briefly stated, the within invention estimates impedance parameters of network branches in both on-line and off-line modes, providing accurat... | 05/06/1997 |
| 5243232 | Start-up pulse suppression circuit for industrial controller output A flash-on reduction circuit for use in the binary state output circuitry of an industrial controller employs a current conductor to charge parasitic capacitances of the output circuitry when the industrial controller is first turned on and a current limi... | 09/07/1993 |
| 4694193 | Fault recognition circuit for parallel power supply devices feeding a user The invention relates to a fault recognition circuit for at least two power supplies feeding in parallel a user at an output side. The power supplies each have an electronic switch, a power transformer and a rectifier portion with a following filter eleme... | 09/15/1987 |
| 4680483 | Comparator circuit A comparator for sensing a small voltage differential at, or close to, the operating voltage rails includes first and second means for producing first and second currents and for producing a third current which is indicative of the difference between the ... | 07/14/1987 |
| 4465965 | Power limiting apparatus Apparatus can limit power by limiting the duty cycle of current carried by a pair of lines. The lines intermittently conduct electrical power. The apparatus has a clock, a converter and a switch system. The clock can provide a timing signal. The converter... | 08/14/1984 |
| 4106097 | Energy conservation control method An energy conservation schedule is followed automatically in response to production activity in a plant facility. The demand of power from the utility company is used as an indicator of actual production activity. The ON/OFF ratio of non-production loads ... | 08/08/1978 |
| 4060709 | Power supply control The supply of power to cyclical, separately controllable loads is controlled without interrupting the operating cycle of the loads. A controllable power supply switch interrupts the power supply circuit to the load only when signalled by a load cycle swit... | 11/29/1977 |
