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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7928743 | Measuring bridge arrangement, method of testing a measuring bridge, test arrangement for testing a measuring bridge, method of producing a tested measuring bridge arrangement, and computer program A measuring bridge arrangement has a measuring bridge with a first supply terminal and first and second measuring signal terminals. The measuring bridge arrangement has a working point adjustment circuit formed to feed the measuring bridge via at least the first sup... | 04/19/2011 |
| 7350425 | Method of eliminating hysteresis from a magnetoelastic torque sensor A method and device for reducing hysteresis in a torque transducer element includes a coil that is excited with an alternating current to produce a magnetic field that saturates the torque transducer element. Magnetic saturation of the torque transducer element is p... | 04/01/2008 |
| 7307430 | Open offset canceling method and an impedance measuring apparatus using the method A method for finding the impedance of a device under test using an impedance measuring apparatus having a modem-type auto-balancing bridge, two or more measurement signals, each of which has a different phase with respect to the reference signals supplied to the mod... | 12/11/2007 |
| 7304484 | Method and device for the temperature compensation of a measuring bridge A method for the temperature compensation of a resistance measuring bridge, such as in particular a Wheatstone bridge, is characterized in that a capacitor positioned between the input circuit and a resistance switching circuit of the Wheatstone bridge is successive... | 12/04/2007 |
| 7255030 | Method and device at running webs have been printed in a high-speed printer The present invention relates running webs which have been printed in a high-speed printer. A method and a device are provided for longitudinal cuffing of a running, unseparated web in two web portions, wherein the unseparated web (2) is printed in a high-spe... | 08/14/2007 |
| 7231309 | Method and apparatus for testing a bridge circuit A method and an apparatus for testing a bridge circuit. The method includes inputting a first test clock to a first conversion unit for triggering the first conversion unit to transfer a test data to a second conversion unit according to rising edges of the first te... | 06/12/2007 |
| 7205781 | Mass air flow circuit having pulse width modulation feedback control A circuit for measuring the mass air flow rate through a duct is disclosed. The circuit includes a bridge circuit, a first amplifier, an oscillator, a comparator and a switch. The bridge circuit has a plurality of resistors arranged to output first and second bridge... | 04/17/2007 |
| 7204638 | Precise temperature sensor with smart programmable calibration A temperature sensor with a plurality of temperature sense points based on a bandgap reference circuit providing negative temperature coefficient reference voltages and a positive temperature coefficient reference voltage. All negative temperature coefficient refere... | 04/17/2007 |
| 7204162 | Capacitive strain gauge A strain gauge for sensing strain is provided and includes a support substrate, and first and second electrodes supported on the substrate. The first and second electrodes include first and second capacitive plates, respectively. The first capacitive plates are mova... | 04/17/2007 |
| 7190178 | Pade′ Approximant based compensation for integrated sensor modules and the like Methods and systems using Pade' Approximant expansion ratios provide mappings between nonlinear sensors and a more linearized output domain. In one embodiment (a) a variable gain amplifier receives a supplied input signal, the amplifier has at least a first input te... | 03/13/2007 |
| 7187185 | Area-change sensing through capacitive techniques An area-change sensing through capacitive techniques is disclosed. In one embodiment, a first conductive surface is substantially parallel to a second conductive surface. The first conductive surface may be moveable relative to the second conductive surface in a dir... | 03/06/2007 |
| 7180281 | Electrical component and method of manufacturing the same An electrode is made by turning a harness such that the electrode has a predetermined are for detecting capacitance. A method of manufacturing of an electrode includes step so turning a wire, and shaping the electrode with the wire. The electrode has a predetermined... | 02/20/2007 |
| 7180311 | Physical quantity sensing device with bridge circuit and zero point adjusting method A physical quantity sensing device includes a bridge circuit that has first and second input points, to which an AC voltage is applied, and first and second output points connected to a differential amplifier. The bridge circuit includes a first bridge arm for elect... | 02/20/2007 |
| 7142058 | On-chip temperature compensation circuit for an electronic device A general purpose Darlington pair amplifier circuit, configured in accordance with a preferred embodiment of the invention, utilizes GaAs heterojunction bipolar transistor technology. The amplifier circuit incorporates a temperature compensation circuit at the input... | 11/28/2006 |
| 7141991 | Instrumentation current loop An instrumentation current loop, including a transducer having transducer output terminals. A power source is connected in series to the transducer. A bridge has a first arm and a second arm extending between a pair of input terminals, where the input terminals of t... | 11/28/2006 |
| 7138807 | Capacitive sensing techniques that include determing rotational position of one electrode relative to other electrodes separated by an electrically nonconductive gap One embodiment of the present invention comprises a sensor with a face having several tracks spaced apart from one another. One of these tracks has a first electrode and a second electrode separated by an electrically nonconductive gap. Also included is a detection ... | 11/21/2006 |
| 7131766 | Temperature sensor apparatus and method A temperature sensor includes a membrane supported by a substrate and a circuit having elements for a substrate electrical resistance indicative of the temperature of a substrate and a membrane electrical resistance indicative of the temperature of a membrane. The s... | 11/07/2006 |
| 7126355 | Physical quantity sensing device with bridge circuit and temperature compensating method A physical quantity sensing device includes an AC voltage generator for generating an AC voltage and a bridge circuit that has first and second input points, to which the AC voltage is applied, and first and second output points connected to a differential amplifier... | 10/24/2006 |
| 7088108 | Method for detecting an offset drift in a wheatstone measuring bridge In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without interfering in the internal structure of the measuring bridge. In testing mode, two sensor resistors that act i... | 08/08/2006 |
| 7064558 | Millivolt output circuit for use with programmable sensor compensation integrated circuits An output sensor apparatus, system, and method including a circuit having a plurality of bridge resistors and one or more connecting resistors coupled to the plurality of bridge resistors. Additionally, a programmable amplifier can be coupled to the connecting resis... | 06/20/2006 |
| 7055392 | Micromechanical pressure sensor A micromechanical pressure sensor which is made up of at least one first component element and a second component element bordering on the first component element. In this context, the first component element includes at least one diaphragm and one cavity. The cavit... | 06/06/2006 |
| 7049860 | Method and circuit for controlling a resistance of a field effect transistor configured to conduct a signal with a varying voltage The present invention relates to a replica network for linearizing switched capacitor circuits. A bridge circuit with a MOSFET resistor disposed in a resistor branch of the bridge circuit is provided. A noninverting terminal of an operational amplifier is connected ... | 05/23/2006 |
| 7030600 | Broadband microwave power sensor A circuit for sensing radio frequency energy. The circuit includes a Wheatstone bridge having at least one element thereof thermally responsive to the radio frequency energy passing therethough differently from radio frequency energy passing though at least one othe... | 04/18/2006 |
| 7019765 | Input device An input device, which is small-sized and inexpensive in spite of being simple in construction and thin, comprises at least one primary electrode and a plurality of secondary electrodes, both electrodes being formed in the same plane. A position of a dielectric is i... | 03/28/2006 |
| 7015706 | Semiconductor sensing device using different resistance types A semiconductor sensing device has a semiconductor substrate with a pressure sensing bridge circuit including piezo-resistance elements formed on the substrate. Further, the semiconductor sensing device has a temperature sensing bridge circuit including resistance e... | 03/21/2006 |
| 6984995 | Device to audibly express impendance measurement An Audio Feedback Impedance Comparison Device to audibly express Impedance differences between/amongst components, circuits, materials, substances etc., to make use of the aural sense, while relieving eye, neck and mental strain, as well as reduce probe time. This i... | 01/10/2006 |
| 6966840 | Amusement device that senses odorous gases in a bathroom A novelty device that makes humorous statements when a person is having a bowel movement in a confined bathroom. The device includes an automated character, such as a bird in a birdcage, a skunk with a gasmask or some other character. Within the device is a gas sens... | 11/22/2005 |
| 6950694 | Automatic input impedance balancing for electrocardiogram (ECG) sensing applications A voltage sensing system includes input impedance balancing for electrocardiogram (ECG) sensing or other applications, providing immunity to common-mode noise signals while capable of use with two electrodes. Signals are received at first and second electrodes havin... | 09/27/2005 |
| 6925325 | Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications A voltage sensing system includes input impedance balancing for electrocardiogram (ECG) sensing or other applications, providing immunity to common-mode noise signals while capable of use with two electrodes. Signals are received at first and second electrodes havin... | 08/02/2005 |
| 6922063 | Apparatus and method for capacitive level sensor A capacitive sensor including a pendulum for electronically determining an indication of angular offset and a capacitive leveling device having such a capacitive sensor for leveling an associated reference surface. The capacitive sensor detects a difference in capac... | 07/26/2005 |
| 6912914 | Three dimensional stress vector sensor array and method therefor A sensor array is configured based upon capacitive sensor techniques to measure stresses at various positions in a sheet simultaneously and allow a stress map to be obtained in near real-time. The device consists of single capacitive elements applied in a one or two... | 07/05/2005 |
| 6803776 | Current-comparator-based four-terminal resistance bridge for power frequencies A current comparator technique is applied to four-terminal resistance measurements for obtaining a highly accurate AC resistance bridge at power frequencies of 50 Hz to 60 Hz. Active circuits are used to establish equal voltage drops between the potential terminals ... | 10/12/2004 |
| 6765391 | Low cost asic architecture for safety critical applications monitoring an applied stimulus An ASIC (14, 14′, 14″) conditions two independent outputs (VINM, VINP) of a full Wheatstone piezoresistive bridge (12) in separate conditioning paths. Each path is provided with a bridge supply voltage (VHB1, VHB2) which can serve as ... | 07/20/2004 |
| 6750665 | Semiconductor pressure detecting device The voltage corresponding to the pressure outputted from a Wheatstone bridge having resistors R1 to R4 is amplified by a differential amplifier 3 and operational amplifiers OP1, OP2, and then outputted through an output terminal | 06/15/2004 |
| 6727709 | Vacuum gauge using peltier tip A thermal conduction vacuum gauge using a Peltier tip is provided. The vacuum gauge for measuring the pressure in a vacuum chamber includes: a signal generator that drives an electric current; an ammeter connected to the signal generator for measuring the current; a... | 04/27/2004 |
| 6724202 | Physical quantity detection device with temperature compensation First and second resistors (sensing elements) are connected in series between first and second potentials. The junction point voltage between the first and second resistor is supplied to an inverting input of a first operational amplifier. The non-inverting input is... | 04/20/2004 |
| 6696846 | Self-balanced active current bridge for measuring the impedance of an external device A self-balanced active current bridge for measuring the impedance of an external device or an output current, including an input potential source and operation amplifier connected to the input potential source via a first input terminal of the operation a... | 02/24/2004 |
| 6646446 | Method and apparatus for fault detection in a resistive bridge sensor A full Wheatstone bridge sensor has conditioning electronics of an ASIC connected thereto. Two independently controlled diagnostic switches (S1, S2) in the ASIC are commonly connected to one of the bridge output nodes. The first diagnostic switch connects... | 11/11/2003 |
| 6593760 | Apparatus for measuring thermal properties and making thermomechanical modification on sample surface with peltier tip An apparatus for measuring thermal properties and making thermomechanical modifications on a material surface using a junction of different metallic wires. The junction of different metallic wires, defined as a Peltier tip, is distinguished from a convent... | 07/15/2003 |
| 6593757 | Capacitance type displacement detection apparatus A transmission electrode 10 and a detection electrode 12 are placed in an electrode section of a sensor and are capacity-coupled with a reception electrode placed on an opposed scale. Capacity change between the transmission electrode 10 and the reception... | 07/15/2003 |
