Electrical charge control apparatus and method for photovoltaic energy conversion systems
It is thus an object of the present invention to provide a circuit and method which permits multiple charge voltage setpoints in photovoltaic battery charging apparatus, thereby making it possible to ... Read More
Inventors: Petrillo, Gino A.;, Assignee: |
Contact pin having a spring under tension
I claim: 1. A spring-loaded contact pin for contacting a test piece for its electrical operativeness, comprising: an elongated conductive casing of oval cross section, open at opposite ends and formed... Read More
Inventors: Kruger, Gustav;, Assignee: Feinmetall GmbH (Herrenberg, DE) |
Digital induction logging tool including means for compensating for phase shift errors
12... Read More
Inventors: Sinclair, Paul L.;, Assignee: Schlumberger Technology Corporation (Houston, TX) |
Coil array for a high resolution induction logging tool and method of logging an earth formation
It is therefore one object of the present invention to provide an improved dual induction tool. It is another object of the present invention to provide an improved dual induction tool having high ver... Read More
Inventors: Sinclair, Paul L.; Strickland, Robert W.;, Assignee: Halliburton Logging Services, Inc. (Houston, TX) |
Method of determining invaded formation properties including resistivity dielectric constant and zone diameter
OF THE PREFERRED EMBODIMENT Attention is now directed jointly to FIGS. 1 and 2 which show a sonde supported logging tool in accordance with the present disclosure. The logging tool is constructed wit... Read More
Inventors: Sinclair, Paul I.;, Assignee: Halliburton Logging Services, Inc. (Houston, TX) |
Subsea hydrocarbon sensor system
What is claimed is: 1. In a subsea hydrocarbon production installation which includes at least first and second production tree assemblies spaced apart on the sea floor, at least one electro-hydraulic... Read More
Inventors: Warren, Walter B.; Marosko, Ronald J.;, Assignee: TRW Inc. (Redondo Beach, CA) |
Measuring conduit for flow rate and concentration of fluid
It is an object of the present invention to provide a measuring conduit which enables the simultaneous measurements of the flow rate of a fluid containing a measured component and the concentration of... Read More
Inventors: Ogura, Ichiro; Machida, Kaoru; Kurahashi, Muneshige;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP); Nihon Kohden Corporation (Tokyo, JP) |
Apparatus for measuring amount of ultrafiltrate and concentration of receiving solvent in dialysis
Any of the conventional method for determining an amount of the ultrafiltrate and a concentration of the receiving solvent has the problems described above, and therefore, it is not suited for practic... Read More
Inventors: Asano, Kiyokazu; Asano, Fumitaka;, Assignee: |
Apparatus for measuring the flow rate of electrically conductive liquids
I claim: 1. Apparatus for measuring the flow rate of electrically conductive liquids, comprising two coils disposed in succession as seen in the flow direction of a liquid, means for switching said co... Read More
Inventors: Knaak, Joachim;, Assignee: Interatom GmbH (Bergisch Gladbach, DE) |
Apparatus for measuring magnetic particles suspended in a fluid based on fluctuations in an induced voltage
The invention generally features an apparatus for detecting magnetic particles suspended in a liquid, the apparatus comprising: a source of an electrical signal; a first coil connected to the electric... Read More
Inventors: Kellett, I. Peter; Erickson, John R.;, Assignee: Product Resources, Inc. (Wakefield, MA) |
Battery charging system having remotely located charging units
OF THE PREFERRED EMBODIMENT While the specification concludes with claims defining the features of the invention that are regarded as novel, it is believed that the invention will be better understoo... Read More
Inventors: Massaroni, Kenneth M.; Meadows, Vernon;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Ozonizer feeding device
Accordingly, the objects of this invention are to provide a novel ozonizer feeding device which permits an increase in the ozone output and thus an economical ozone production using simple technical m... Read More
Inventors: Galliker, Josef;, Assignee: BBC Brown, Boveri & Company Limited (Baden, CH) |
Electrochemical storage device
The invention relates to an electrochemical storage device of the type having a plurality of serially connected cells, in which each has two spacially separated electrodes. German patent document DE 4... Read More
Inventors: Maly-Schreiber, Martha; Huggins, Robert A.;, Assignee: Daimler-Benz AG (DE) |
Recharging method and temperature-responsive overcharge protection circuit for a rechargeable battery pack having two terminals
The present invention is particularly designed and adapted to solve the above-noted problems by providing an overcharge protection circuit for a rechargeable battery pack having only two contact termi... Read More
Inventors: Tibbs, Bobby L.;, Assignee: Eveready Battery Company, Inc. (St. Louis, MO) |
Composite metal oxide material
It is, therefore, an object of the present invention to provide a composite material having a Y123 metal oxide crystal layer grown on a thin Y123 metal oxide film and having excellent crystallinity an... Read More
Inventors: Yamada, Yasuji; Nakamura, Masaru; Tatsumi, Noriyuki; Tsujino, Jiro; Ohtsu, Kanshi; Kanamori, Yasuo; Tagami, Minoru; Kume, Atsushi; Shiohara, Yuh; Tanaka, Shoji;, Assignee: International Superconductivity Technology Center (JP); Hitachi Cable Ltd. (JP); Hokkaido Electric Power Co., Inc. (JP); Kyushu Electric Power Co., Inc. (JP); The Kansai Electric Power Co., Inc., (JP); Fujikura, Ltd. (JP) |
Method of measuring the parameters of a resonator
I claim: 1. A method of measuring parameters including resonant frequency of a resonator, which includes: installing the resonator to be measured in a testing jig which acts as an interface between th... Read More
Inventors: Williamson, Roger J.;, Assignee: STC plc (London, GB2) |
Motor control circuit with automatic restart of cut-in
FIG. 2 shows a control circuit 10 for use with a single phase AC induction motor having a main winding 1 and an auxiliary winding 2 both connectable to an AC power source 3, and having a disconnect p... Read More
Inventors: Min, Young-Kee;, Assignee: PT Components, Inc. (Milwaukee, WI) |
Drive circuit for power operation of a movable part of a vehicle coachwork
The problem which the invention seeks to overcome is to so improve the operating mechanism according to the said Patent that the above-described situation cannot occur, enabling the control winding of... Read More
Inventors: Mitterer, Erik;, Assignee: Webasto-Werk W. Baier GmbH & Co. (DT) |
Apparatus and method of anode power supply control during vertical retrace
The present invention provides an apparatus and method for controlling anode power supply output voltage fluctuation during the vertical retrace period by providing a control stage which generates a p... Read More
Inventors: Blanc, James J.; Hansen, Bryan P.; Kemper, Dale A.;, Assignee: Sperry Corporation (New York, NY) |
Circuit arrangement for cyclic supply
We claim: 1. A control circuit for controlling an electromagnetic load in accordance with an input signal, the control circuit comprising: a frequency/voltrage transformer for receiving a control sign... Read More
Inventors: Locher, Johannes; Fischer, Werner; Tauscher, Joachim;, Assignee: Robert Bosch GmbH (Stuttgart, DE) |
Microcomputer for driving induction motor
The invention has been conducted in view of the above-described circumstances. It is an object of the invention to provide a microcomputer for driving induction motor in which the load on a CPU can be... Read More
Inventors: Inoue, Naoki;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP); Mitsubishi Electric Semiconductor Software Co., Ltd. (Hyogo, JP) |
Electronic control circuit
The invention therefore includes the provision of a control circuit for and a method of providing electrical output signals for ignition of turbine engines or control of firing of missiles or the like... Read More
Inventors: Grundberg, Kenneth;, Assignee: |
Component for logic circuits and logic circuits equipped with this component
What I claim is: 1. A solid state component for logic circuit comprising integrated upon one and the same substrate, in combination, a first, a second, a third and a fourth semiconductive layer formin... Read More
Inventors: Ngutung, Pham;, Assignee: Thomson-CSF (Paris, FR) |
Induction motor control apparatus
It is an objective of the present invention to overcome the disadvantages of the prior art described above, by providing an apparatus for controlling the power factor of an induction motor, whose oper... Read More
Inventors: Kuwahara, Naruto; Hatanaka, Takefumi;, Assignee: Arex Electronics Corp. (Tokyo, JP) |
High-temperature storage battery
An object of the invention to provide a high-temperature storage battery with a cooling device which permits optimum cooling of all storage cells by cooling each storage cell to such an extent that al... Read More
Inventors: Reiss, Harald; Ziegenbein, Botho;, Assignee: Brown, Boveri & Cie AG (Mannheim-Kafertal, DE) |
Voltage regulator with ferromagnetic filter
OF EMBODIMENT Referring to said drawing, this shows that the actual regulator is conventionally constituted, of a ferromagnetic circuit (1) associated to windings (2). According to the invention, on ... Read More
Inventors: Budin, Maurice; Veyrand, Pierre;, Assignee: Automatismes Energie Electronique Systemes (FR) |
Arrangement for the testing of high voltage direct current switches
We claim: 1. In a circuit for the synthetic testing of a high voltage direct current switch, which arrangement includes a first direct voltage source having a high current and low voltage output, a fi... Read More
Inventors: Kind, Dieter; Brumshagen, Harald;, Assignee: Kind; Dieter (Braunschweig, DT) |
Apparatus for detection of rotational angle and number of rotations of a rotary body
It is an object, therefore, of the present invention to overcome the disadvantage and limitation of a prior apparatus for detecting a rotational angle by providing a new and improved apparatus, which ... Read More
Inventors: Wasawa, Kiyoshi; Kita, Toru; Sugisaki, Takao; Higurashi, Minoru;, Assignee: TDK Electronics Co., Ltd. (Tokyo, JA); Nissan Motor Company (BOTH OF, JA) |
Semiconductor switch device
It is an object of the present invention to provide a semiconductor switch device wherein a third winding (short-circuit windings) is formed in a current transformer and the number of turns of the thi... Read More
Inventors: Akamatsu, Masahiko;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Slope change detector
With this and other objects in view, the invention contemplates a device which generates a signal indicative of a relationship between a subject signal and a signal derived from the subject signal and... Read More
Inventors: Livesay, Robert H.;, Assignee: Sun Oil Company of Pennsylvania (Philadelphia, PA) |
Electrical and Wave 
