Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8154380 | Sensor mount assemblies and sensor assemblies Sensor mount assemblies and sensor assemblies are provided. In an embodiment, by way of example only, a sensor mount assembly includes a busbar, a main body, a backing surface, and a first finger. The busbar has a first end and a second end. The main body is overmol... | 04/10/2012 |
| 8093985 | Architecture for a highly accurate DCP Circuits, methods, and apparatus that provide highly accurate DCPs. One example provides a DCP that includes a resistor string having taps that may be selected by a corresponding number of switches under the control of a digital word. To compensate for parasitic swi... | 01/10/2012 |
| 7378621 | Molybdenum silicide type element The present invention relates to an electrical resistance element of the molybdenum silicide type that includes two terminals (1, 2) for the supply of electric current and at least one leg (3) which extends between the terminals and which includes a gl... | 05/27/2008 |
| 7282377 | Method for identifying semiconductor integrated circuit device, method for manufacturing semiconductor integrated circuit device, semiconductor integrated circuit device and semiconductor chip In the manufacturing process of a semiconductor integrated circuit device, a plurality of identification elements having the same arrangement are formed and the relation of magnitude in a physical amount corresponding to variations in the process of the plurality of... | 10/16/2007 |
| 7238296 | Resistive composition, resistor using the same, and making method thereof When the entire amount of conductive metal mixed powder made of copper, manganese, and germanium is 100 parts by weight, the metal mixed powder is formed by mixing 4.0 to 13.0 parts manganese by weight, 0.2 to 1.4 parts germanium by weight, and 85.6 to 95.8 parts co... | 07/03/2007 |
| 7145413 | Programmable impedance matching circuit and method As disclosed herein, a microelectronic circuit and method are provided for improving signal integrity at a transmission line. The circuit includes a programmably adjustable impedance matching circuit which is coupled to a transmission line which includes a programma... | 12/05/2006 |
| 7139397 | Hybrid architecture for realizing a random numbers generator A hybrid architecture for realizing a random numbers generator comprising a digital circuitry portion able to provide for a random bytes sequence as well as an analog circuitry portion able to provide a seed of the true random type is described. ... | 11/21/2006 |
| 7119549 | Output calibrator with dynamic precision An integrated circuit device having an output driver circuit and a control circuit. The output driver circuit outputs a first signal having a signal level according to a control value. The control circuit is coupled to receive the first signal from the output driver... | 10/10/2006 |
| 7042331 | Fabrication of thick film electrical components A thick-film resistor component may include a thick film component formed between a thick-film resistor and an electrically conductive sheet, wherein a portion of the sheet is selectively removed to form resistor contacts while exposing a portion of the thick-film c... | 05/09/2006 |
| 6554609 | Nanotechnology for electrical devices Nanostructured non-stoichiometric non-equilibrium materials are disclosed. Novel electromagnetic materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for develop... | 04/29/2003 |
| 6204789 | Variable resistor circuit and a digital-to-analog converter A 1-bit D/A converter with a zero detect soft mute function is provided in such a manner that a counter is operated by detecting that a multibit digital signal is all zero for a constant period of time, and a feedback resistor of an op-amp in the analog l... | 03/20/2001 |
| 5991149 | Operation shaft receiving-type electric An operation shaft receiving-type electric component capable of reducing the number of parts required therefor and preventing generation of noise. An electric component body which includes an electric component unit varied in electric properties due to a ... | 11/23/1999 |
| 5856792 | Interrupt driven method of remote control An interrupt apparatus for remotely controlling a potentiometer is comprised of an encoder for generating a pair of quadrature output signals whenever the encoder becomes rotated. The pair of signals are sent to a pair of D flip-flops for detecting a risi... | 01/05/1999 |
| 5659127 | Substrate structure of monolithic gas sensor A substrate structure of a monolithic gas sensor is disclosed, wherein the substrate structure is formed as a thermal resistant and insulating suspended thin plate configuration on a single crystal silicon substrate. The thin plate has formed thereon a he... | 08/19/1997 |
| 5563573 | Pseudo-random switched resistor A pseudo-random switched resistor for emulating a relatively high input impedance. The switched resistor comprises a relatively low value resistor, a semiconductor switch coupled to the resistor, and a pseudo-random pulse generator coupled to the switch f... | 10/08/1996 |
| 5296835 | Variable resistor and neuro device using the variable resistor for weighting A Neuro device is a representation of a nerve cell constituting human brains, eyes and the like, that is, a neuron by an electronic circuit. A circuit of the Neuro device according to the present invention comprises n (n : natural number) input terminals ... | 03/22/1994 |
| 5252945 | High-voltage electronic parts A voltage-dividing resistor plate is stored in a case, and a resin layer for insulation is formed on the voltage-dividing resistor plate. On the resin layer, for example, a coupling capacitor and a smoothing capacitor are affixed. And it is so arranged th... | 10/12/1993 |
| 5248956 | Electronically controllable resistor An electronically controllable resistor (ECR) which functions as a fixed or variable resistor over a wide range of operating conditions. The value of the resistance may be altered in a highly linear fashion by altering a digital input thereto. The ECR uti... | 09/28/1993 |
| 5225169 | Reduced heat loss sulfider An improved sulfider is provided for receiving high temperature catalysts from a hydrocarbon cracking operation and subjecting the catalyst to a sulfur-containing gas. The treating unit includes an outer metal housing and first refractory layer within the... | 07/06/1993 |
| 5223754 | Resistive fuse circuits for image segmentation and smoothing A simple transistor circuit which acts as a linear resistor for small applied voltages, but becomes extremely resistive for large applied voltages is disclosed. Two-dimensional resistive grids comprising these resistive fuses can be employed to smooth and... | 06/29/1993 |
| 5208842 | Precision digitally-controlled variable attenuation circuit A precise digitally-controlled variable attenuation circuit for adjusting e attenuation of a signal in an external circuit includes a signal magnitude detector, a resistance adjustment control, and a resistance divider network. The signal magnitude detect... | 05/04/1993 |
| 5157582 | Composite electronic part A surface-mountable composite electronic part comprising a capacitor element which includes a dielectric ceramic member and a film resistor combined therewith for forming an RC circuit. A plurality of external terminals are formed on both end surfaces of ... | 10/20/1992 |
| 5065132 | Programmable resistor and an array of the same A programmable resistor 10 is provided having a resistive element 12. Resistive element 12 includes a substrate 26 formed by a layer of semiconductor of a first conductivity-type. A current path 32 is formed in substrate 26 by a layer of semiconductor of ... | 11/12/1991 |
| 5049827 | Non-contacting potentiometer A non-contacting potentiometer includes a resistor and a movable probe which capacitively couples AC signals applied to the resistor to an output terminal. A closed loop control circuit is coupled to the resistor and the probe to compensate for variations... | 09/17/1991 |
| 5045832 | Digitally controlled variable resistor A compact and inexpensive variable resistor circuit has a value of resistance that can be set by a data signal. The variable resistor includes a number of variable individual resistances connected in series, and an electronic switch connected in parallel ... | 09/03/1991 |
| 5034718 | Spark protection for high voltage resistors Resistors have successfully replaced corona point discharge devices in the control of high voltage gradients, such as those experienced in electrostatic accelerators. An improved resistor for such applications which has a single elongate resistive element... | 07/23/1991 |
| 5032752 | Anisotropic resistivity material and method of making same A material which exhibits different electrical resistivity in mutually perpendicular directions is formed by providing a base member of one metal and covering a surface of the base member with a second metal of a different composition. Thereafter, multipl... | 07/16/1991 |
| 4985808 | Printed circuit board switching system for resistor network A printed circuit or printed wire board has a resistor network thereon, wired through conductors that are arranged so that individual circuit paths for different resistor combinations pass onto one of a plurality of peripheral tabs on the printed circuit ... | 01/15/1991 |
| 4972046 | Connection means for electrical information containing signals and method for manufacturing the same A connecting element is provided comprising an electrical conductor and a conductive path of arranged carbon along the connecting element's entire connecting length. The conductive path can either be formed as an integral part of the electrical conductor ... | 11/20/1990 |
| 4961066 | Fault current limiter A current limiter according to the invention has two resistors, the first one consisting of a thin layer of a material which may become superconducting and the second one is a resistance layer applied on first resistor, the latter resistor layer being dim... | 10/02/1990 |
| 4940878 | Anisotropic resistivity material and method of making same A material which exhibits different electrical resistivity in mutually perpendicular directions is formed by providing a base member of one metal and covering a surface of the base member with a second metal of a different composition. Thereafter, multipl... | 07/10/1990 |
| 4920329 | Impedance-compensated thick-film resistor A thick film resistor (TFR) is provided that is capable of being compensated for impedance variations related to the TFR laser-trimming process. According to the invention, a thick film capacitor (TFC) metallization is provided in parallel with the thick ... | 04/24/1990 |
| 4864273 | Variable resistor A variable resistor having a multi-layer resistive/conductive element is provided. The resistor has three electrodes, a resistive element connecting two of the electrodes and a sliding contact between the resistive element and the third electrode. The bas... | 09/05/1989 |
| 4810948 | Constant-voltage regulated power supply circuit A constant-voltage regulated power supply circuit has an input circuit and an output circuit. The sense circuit includes a programmable sense circuit that further includes a divider network with a plurality of selectable tap points and a multiplexer havin... | 03/07/1989 |
| 4797725 | Memory cell for SRAM with a dielectric layer over a gate electrode to provide a parallel resistive and capacitive element A static memory cell including a pair of field-effect transistors, characterized by the provision of highly dielectric layers in combination with the field-effect transistors, wherein each of the highly dielectric layers is located directly on a polysilic... | 01/10/1989 |
| 4769094 | Amorphous-nickel-base alloy electrical resistors Amorphous Nickel-base alloys for electrical resistors, which contain, by atomic %, 81-x% Ni, x% Cr, 6% B and 13% Si (z=0~25), or 70% Ni, 11% Cr, 19-y% B and y% Si (y=0~19 except 13), or 100-z% of 0.864 Ni and 0.136 Cr and z% of 0.316 B and 0.684 Si (x=15~... | 09/06/1988 |
| 4766412 | Electronic composite component having resistor element An electronic composite component is composed of a resistor element formed by a resistor film and a functional element such as a capacitor element which is electrically connected in parallel with the resistor element. The functional element has a body and... | 08/23/1988 |
| 4748437 | Connector for a picture tube A picture tube connecting device, including a common integral insulating housing, connector contacts in the common housing for electrically contacting a picture, and at least one potentiometer, including a focus adjusting potentiometer in the housing, ele... | 05/31/1988 |
| 4720624 | Non-uniform resistance heating tubes This is a non-uniform resistance heating tube constituting a simulated nuclear fuel cluster in a heat transfer test facility for nuclear reactor. This resistance heating tube has a fixed outside diameter and its thickness is molded so that an electric res... | 01/19/1988 |
| 4675645 | High-frequency selecting switch terminal An improved high frequency selecting switch terminal comprising two conductor pins which are coaxial. When a conductor pin from a cable is inserted into the terminal, it pushes the front end of the first conductor pin forward into the front end of the sec... | 06/23/1987 |
