Power supply apparatus for controlling electrical elements of vehicles
Accordingly, it is an object of the present invention to provide an improved power supply apparatus for controlling electrical elements of a vehicle which overcome the aforementioned problems encounte... Read More
Inventors: Kim, Sun-Kyung;, Assignee: Mando Machinery Corporation (Kyonggi-do, KR) |
Circuit for measuring discharging and charging current of a battery providing offset/drift voltage for correcting amplifier output
Accordingly, an object of the present invention is to provide a current measuring circuit capable of measuring battery discharging current and charging current over a wide range from a small current t... Read More
Inventors: Goto, Seiji; Tsunoda, Kazuaki; Murayama, Yukio;, Assignee: Fujitsu Limited (Kawasaki, JP) |
In-circuit current measurement
The present invention provides a method for the accurate and reliable measurement of currents in a circuit without breaking the circuit to insert a measuring device. The method for measuring current I... Read More
Inventors: Minneman, Michael; Reindel, Kenneth A.; Banaska, John G.; Bish, Gary K.; Creque, Andy J.; Atwell, Michael;, Assignee: Keithley Instruments, Inc. (Cleveland, OH) |
Live circuit resistance measurement system and method
The problems discussed above are solved in the present invention which is a system that measures the resistance of a portion (e.g., a power bus connection) of a live power circuit. The invention opera... Read More
Inventors: Moore, John H.; Revak, Christopher J.;, Assignee: Electro-Test, Inc. (Danville, CA) |
Circuit arrangement and method for pulsated charging of batteries
What is claimed is: 1. Circuit arrangement for pulsated charging of batteries, comprising: an alternating current source having a predetermined inductance and a pair of output terminals; a rectifier (... Read More
Inventors: Fazakas, Andras;, Assignee: |
Method and apparatus for controlling the input impedance of a power converter
This invention teaches that the control of a DC-DC converter can be implemented using energy control, knowing the power of the input, the output and the losses, and knowing the energy content of the t... Read More
Inventors: Herbert, Edward;, Assignee: |
Electronic photoflash
The present invention relates to an electronic photoflash system having features to avoid wasteful consumption of energy stored in a battery power supply when, for example, the user forgets or neglect... Read More
Inventors: Ban, Itsuki; Inoue, Kyoichi; Kogure, Takatoshi;, Assignee: |
Power supply apparatus for efficient power conservation of a battery
It is therefore an object of the present invention to provide a power supply apparatus which is capable of using an alkaline cell, manganese cell or the like and adequately supplying a power concurren... Read More
Inventors: Sibata, Yosimitu; Nojiri, Tadao;, Assignee: Nippondenso Co., Ltd. (Kariya, JP) |
Secondary battery boost circuit
The present invention provides for a boost circuit which engages a secondary "bridge" or back-up power supply upon an output of a primary power supply falling below suitable level. The boost circuit i... Read More
Inventors: Pleso, Mark F.; Leppo, Lee E.;, Assignee: Telxon Corporation (Akron, OH) |
Power supply apparatus having a function of compensating for changes in voltage
A description will now be made of constructions of the present invention, for achieving the above objects. They will be described by affixing reference numerals employed in embodiments thereto to prov... Read More
Inventors: Hoshino, Yasutaka; Fujisawa, Tsutomu; Nemoto, Hideyuki; Yoshizaki, Atsuhiro;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Rechargeable device with operational inhibit during recharging
The present invention provides a device having an electrical load supplied with power from a rechargeable secondary battery and adapted to mate with a charger that provides a source of recharging elec... Read More
Inventors: Dowe, David R.;, Assignee: Eastman Kodak Company (Rochester, NY) |
Shielded computer network switch
The present invention utilizes absorption methodology and unique grounding techniques to substantially enhance computer network security . A cost effective non-woven absorption/reflection fabric is us... Read More
Inventors: Bouthillier, Stephen W.;, Assignee: |
Battery check device
In order to eliminate the shortcomings of the conventional device, an object of the present invention is to provide a battery check device so designed that a current corresponding to the state of the ... Read More
Inventors: Kawamura, Masaharu;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Low-drop voltage regulator
It is an object of the present invention to provide a highly reliable, long-life voltage regulator designed to minimize interference at the output caused by switching of the power elements of the regu... Read More
Inventors: Poletto, Vanni; Morelli, Marco; Murari, Bruno;, Assignee: SGS-Thomson Microelectronics, S.r.l. (Agrate Brianza, IT) |
Automatic pressure control system
What is claimed is: 1. A pressure supply system for supplying adjustable and controlled outlet pressure selectively lower or higher than a gas supply pressure, including in combination a first pressur... Read More
Inventors: Worden, Donald A.;, Assignee: Marotta Scientific Controls, Inc. (Boonton, NJ) |
Drive system for household appliances
Among the several objects of the present invention may be noted the provision of a control system for use in household appliances such as a washing machine, which utilizes a low-cost microcontroller f... Read More
Inventors: Nordby, Craig J.; Sood, Pradeep K.; Venturini, Marco; O'Breartuin, Ciaran;, Assignee: Emerson Electric Co. (St. Louis, MO) |
Apparatus for controlling electrical power consumption
We claim: 1. Apparatus for controlling electrical power consumption by a load of a consumer drawing power from a power supply network, said apparatus comprising current control means for controlling t... Read More
Inventors: Peddie, Robert A.; Fielden, John S.;, Assignee: South Eastern Electricity Board (GB2) |
Load current sharing circuit
OF THE INVENTION The load sharing circuit of the invention provides load current sharing among multiple independent power modules connected in a parallel configuration such that each module delivers ... Read More
Inventors: Jordan, Mark; Mammano, Robert A.;, Assignee: Unitrode Corporation (Lexington, MA) |
Processing unit and system including plurality of the processing units
An object of the present invention is to avoid an overload of a power source if the sum of the respective, maximum rated currents of a plurality of processing units connected to a common power source ... Read More
Inventors: Koshi, Makoto; Kaiju, Yoshihiko;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Boost-input backed-up uninterrupted power supply
A first object of the invention backed-up power supply is to use an input rectifier and filter coupled to an input voltage source to convert the input voltage source into at least an unregulated posit... Read More
Inventors: Reddy, Anantha B.;, Assignee: Deltec Corporation (San Diego, CA) |
Uninterruptible power supply with improved output regulation
Although this invention is susceptible to embodiments of many different forms, a preferred embodiment will be described and illustrated in detail herein. The present disclosure exemplifies the princi... Read More
Inventors: Miller, Frank D.; Helfrich, Thomas E.;, Assignee: Square D Company (Palatine, IL) |
Power shedding device
Among the various objects and features of the present invention may be noted the provision of an improved power shedding device for use with uninterruptible power supplies and the like. Another object... Read More
Inventors: Pugh, William C.; McNally, John M.;, Assignee: Compusci, Inc. (Fenton, MI) |
Load control for partially increasing/decreasing power usage
OF THE PREFERRED EMBODIMENT Referring now to FIG. 1, it shows, in functional block diagram form, an add/shed control system 10 embodying the present invention. The system 10 includes an add/shed proc... Read More
Inventors: Shavit, Gideon; Culp, Charles H.;, Assignee: Honeywell Inc. (Minneapolis, MN) |
AC power module for automation system
It is an object of the invention to meet these needs, and others, by providing an AC power module for setting the level of power supplied to a plurality of devices according to control signals from a ... Read More
Inventors: Burgess, Michael H.; Pritchett, James D.; Voita, Douglas L.;, Assignee: IntelliNet, Inc. (Naples, FL) |
Power management system and method for maximizing heat delivered to dialysate in a dialysis machine
An important aspect of this invention is to maximize the amount of electrical power available for use by the dialysate heater in a dialysis machine while still assuring that the other components of th... Read More
Inventors: Larson, Byron; Ogawa, Frank;, Assignee: Cobe Laboratories, Inc. (Lakewood, CO) |
Electrical load optimization device
Briefly, the invention comprises a specially controlled switch in the control signal line of individual units of electrical equipment. An example of a control signal line is the thermostat control lin... Read More
Inventors: Budney, Stanley M.;, Assignee: |
Operation control device and method for a plurality of electric power consuming systems
To solve the above-described disadvantage, the present invention provides an operation control device and method for use in an electric power supply system for supplying electric power from one electr... Read More
Inventors: Kumasaka, Iwao;, Assignee: Tokyo Electron Limited (Tokyo-to, JP) |
AC power supply controller for use in semiconductor fabrication facilities
An object of the present invention is to provide a power supply controller which is capable of regulating the amount of AC electrical power supplied to semiconductor fabrication facilities to amounts ... Read More
Inventors: Ryu, Kyu-Bok; Guk, Jung-Ho;, Assignee: Samsung Electronics Co., Ltd. (Suwon, KR) |
Flexible battery charger adaptable to the batteries of the mobile phones of different sizes
OF THE PREFERRED EMBODIMENTS In the following description, for purposes of explanation rather than limitation, specific details are set forth such as the particular architecture, interfaces, techniqu... Read More
Inventors: Kim, Bong-Do;, Assignee: Samsung Electronics Co., Ltd. (Kyungki-Do, KR) |
Thermoacoustic magnetohydrodynamic electrical generator
Accordingly, it is an object and purpose of the present invention to provide a thermoacoustic electrical generator for converting heat to electrical energy. More particularly, it is an object to provi... Read More
Inventors: Wheatley, John C.; Swift, Gregory W.; Migliori, Albert;, Assignee: The United States of America as represented by the United States (Washington, DC) |
Electrical and Wave 
