Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8081006 | Non-linear sensor temperature compensation using summed temperature compensation signals A sensor temperature compensation circuit that includes a sensor and non-linear temperature compensation circuit that compensates for non-linear temperature dependencies in offset and/or gain generated by the sensor. For instance, to at least partially compensate fo... | 12/20/2011 |
| 7573275 | Temperature sensor control apparatus A temperature sensor control apparatus includes a reference potential section, a driving potential section set to a driving electric potential, a temperature sensor configured to vary a resistance in accordance with a temperature, and disposed between the reference ... | 08/11/2009 |
| 7508225 | Apparatus, system and method for identification with temperature dependent resistive device An apparatus, system, and method provide device identification and temperature sensing of a device with a temperature sensing circuit (TSC) within the device. The TSC includes a temperature sensing element (TSE) connected in parallel with a voltage clamping network ... | 03/24/2009 |
| 7492171 | Systems and arrangements for sensing current with a low loss sense element One arrangement includes a sense element to convey a current from a source to a load and a compensation element located proximate to the sense element. The compensation element having a resistance that changes proportional to a change in temperature of the sense ele... | 02/17/2009 |
| 7443178 | Circuit arrangement of the temperature compensation of a measuring resistor structure An electrical circuit for the temperature compensation of at least one measuring resistor structure integrated in a semiconductor body includes at least one further resistor structure which is likewise concomitantly integrated into the semiconductor body and is ther... | 10/28/2008 |
| 7443176 | Test mode and test method for a temperature tamper detection circuit An integrated circuit temperature sensor includes a sensor to determine whether the integrated circuit is currently exposed to a relatively low or high temperature. A measured voltage across the base-emitter of a bipolar transistor is selected if the sensor indicate... | 10/28/2008 |
| 7429866 | System and method for resistance measurement A method for improved cable resistance measuring is provided including coupling a measurement test device including a master unit and a remote unit, via at least one connector, to at least one network cable and determining a terminating impedance using field calibra... | 09/30/2008 |
| 7394264 | Device for non-dissipative measurement of the current in an inductor The invention relates to a device for measuring current in an inductor and being connected in parallel with said inductor. The device includes a network in parallel with the inductor and connected to the terminals A and B comprising a resistor R2 in series wi... | 07/01/2008 |
| 7391228 | On-die heating circuit and control loop for rapid heating of the die An integrated circuit includes a heating circuit configured to heat the integrated circuit under the control of a controller. A transfer function with adjustable pole, zero and overall gain is implemented in the controller such that a temperature response of the int... | 06/24/2008 |
| 7331237 | Technique for improving Pirani gauge temperature compensation over its full pressure range A method and apparatus are provided for achieving nearly perfect temperature compensation of a heat-loss vacuum gauge over its full pressure range. A voltage is measured across a sensor leg, a sensor leg and a temperature compensating leg connected together in serie... | 02/19/2008 |
| 7279954 | On-chip temperature detection device An on-chip temperature detection device includes: a bipolar type power transistor; a mirror transistor in which a collector current, which is proportional to a collector current of the power transistor, flows; a current detection section that detects the collector c... | 10/09/2007 |
| 7268566 | Active sensor circuit with one or more T-network pairs A sensor circuit is provided that includes at least one pair of interconnected T-networks. Each pair has a first T-network including a first impedance serially connected to second impedance at a first junction and a first variable resistance sensor element connected... | 09/11/2007 |
| 7265560 | Temperature compensated vapor sensor A chemiresistor sensor system that compensates for changes in resistance caused by changes in ambient temperature, thereby increasing the accuracy of the sensor system's ability to detect target analytes. The sensor system generally includes a first resistor, a seco... | 09/04/2007 |
| 7176701 | Semiconductor device, temperature sensor, and electronic apparatus comprising it A temperature sensor including two transistors having different emitter current densities and performing temperature detection based on the fact that the difference in voltage between base and emitter changes with temperature. The temperature sensor is provided with... | 02/13/2007 |
| 7170275 | Method and apparatus for determining the temperature of a junction using voltage responses of the junction and a correction factor Method and system for periodically measuring the junction temperature of a semiconductor device. The junction is excited by at least two sequential predetermined currents of different magnitudes. The voltage response of the junction to the at least two currents is m... | 01/30/2007 |
| 7132838 | Active sensor circuit with one or more T-network pairs A sensor circuit is provided that includes a first T-network including a first impedance serially connected to a second impedance at a first junction and a first variable resistance sensor element connected at a first end to the first junction and at a second end to... | 11/07/2006 |
| 7124983 | Hybrid electrical ice protection system and method including an energy saving mode A hybrid electrical ice protection system implements three ice protection methods in various combinations. The ice protection methods include the fully-evaporative anti-ice protection method, the wet running anti-ice protection method, and the de-ice method. The par... | 10/24/2006 |
| 7077021 | Sensor device on a feed pipeline carrying high voltage In order to be able to operate a sensor device on a feed pipeline carrying high voltage without using batteries or storage batteries, the sensors are connected for supply purposes via an electrical isolating stage to a mains voltage source and for signal purposes to... | 07/18/2006 |
| 7061255 | Corrosion monitoring system A system for monitoring corrosion in metal by comparing a test sample exposed to a corrosion causing environment and a reference sample exposed to a protected environment. An AC voltage source generates a square wave signal oscillating between ground and voltage Vcc... | 06/13/2006 |
| 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 |
| 7033113 | Mid-line connector and method for pipe-in-pipe electrical heating For heating a pipe-in-pipe pipeline with power provided through an electric cable, mid-line connector is provided including: a connector housing joinable to the outer pipe of the pipeline; a blank pipe positioned within the connector housing and joinable to the inne... | 04/25/2006 |
| 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 |
| 6944562 | Temperature compensation device and method with low heat-generation A temperature compensation device for an optical communication device or the like is constructed so that an error value, which is the difference between the current temperature and a reference temperature, is subjected to digital processing in a temperature comparis... | 09/13/2005 |
| 6937030 | Testing electrical integrity of electrically heated subsea pipelines Method is provided for testing electrically heated subsea pipelines that are “electrical-ready,” that is, equipped for applying electrical power when it is needed for heating the pipeline at any time during the life of the pipeline. Time domain reflectometer app... | 08/30/2005 |
| 6936158 | Method and apparatus for measuring accumulated and instant rate of material loss or material gain The present invention relates to a method and an apparatus for measuring accumulated and instant rate of material loss or material gain of metal elements for the detection of metal deposition (material gain) caused for example during deposition of coatings used in p... | 08/30/2005 |
| 6919729 | Corrosivity measuring device with temperature compensation An improved corrosion measurement system for determining the rate of corrosion of a fluid medium. The system is comprised of a highly sensitive excitation and amplification electronic circuitry for registering and displaying the stable and accurate measurement resul... | 07/19/2005 |
| 6906537 | System for controlling the temperature of an aircraft airfoil component An airfoil temperature control arrangement includes a resistive heater element. A plurality of detectors allow a controller to gather resistance information at various intervals along the resistive heater element. Determining the resistance of the corresponding port... | 06/14/2005 |
| 6903561 | Circuitry for measuring mechanical stress impressed on a printed circuit board A circuit for measuring mechanical stress impressed on a printed circuit board includes a number of electrically conductive pads formed on at least one outer surface of the printed circuit board, and a resistive material applied in a pattern to the printed circuit b... | 06/07/2005 |
| 6867605 | Circuit for determining the internal resistance of a linear lambda probe A device for measuring the probe impedance of a linear lambda probe of an internal combustion engine which is caused by an AC current measurement signal which is fed into the lambda probe, comprises a voltage amplifier for amplifying an AC voltage which drops across... | 03/15/2005 |
| 6809538 | Active cooling to reduce leakage power Leakage power consumed by an integrated circuit is estimated as the difference between total power consumption and a nominal expected power consumption. Leakage power is reduced by cooling the integrated circuit in an active cooling system. By expending power in the... | 10/26/2004 |
| 6750664 | Apparatus for managing an intergrated circuit An apparatus for an integrated circuit comprising a thermal sensor (41-44), an A-D converter (58) coupled to the thermal sensor, wherein the thermal sensor provides an input to the A-D converter, and the A-D converter converts the input to a digital va... | 06/15/2004 |
| 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 |
| 6724196 | Temperature controlled high voltage regulator A temperature controlled high voltage regulator for automatically adjusting the high voltage applied to a radiation detector is described. The regulator is a solid state device that is independent of the attached radiation detector, enabling the regulator to be used... | 04/20/2004 |
| 6714018 | Method of commissioning and operating an electrically heated pipe-in-pipe subsea pipeline Methods for determining electrical and thermal properties of a heated pipeline are provided. During commissioning or at any time thereafter, a base curve of impedance versus temperature of the pipeline is determined, so that impedance measurements can thereafter be ... | 03/30/2004 |
| 6707012 | Power supply for electrically heated subsea pipeline A power supply system for electrically heated pipelines is provided. A variable frequency drive supplies power to the pipeline from an external source of electrical power. An isolation transformer and a contactor or isolating switch may be used between the variable ... | 03/16/2004 |
| 6657445 | Sensor mat configuration enabling actual resistance values of force-dependent resistors of a sensor mat to be determined A sensor mat configuration includes a sensor mat having row lines, column lines, and a plurality of force-dependent resistors connected between the row lines and the column lines to form a matrix having rows and columns. The sensor mat configuration inclu... | 12/02/2003 |
| 6582119 | Wire breaking detection method for temperature sensor and temperature sensing apparatus for using the method A temperature sensing apparatus comprises a temperature sensor, a current measuring device and temperature detection circuit. The temperature sensor contains a thermal resistor that is disposed near a motor and outputs voltages acting to the thermal resis... | 06/24/2003 |
| 6525550 | Method and apparatus for temperature control A two-stage circuit configured to control the temperature of a device, having: a first stage connected to the device for controlling the temperature of the device; and a second stage having a temperature sensor and a heat source associated with the first ... | 02/25/2003 |
| 6421626 | Low voltage/low power temperature sensor The present invention is a temperature sensor which is based on the actual temperature coefficients of a device in the circuit, rather than a predetermined threshold voltage that varies across different devices. This temperature sensor includes a circuit ... | 07/16/2002 |
| 6417678 | Bridge circuit for detector A bridge circuit serving as a detector of a physical variable such as pressure has four resistors forming a wheatstone bridge, one of the resistors changing resistance according to variations in the physical variable to be measured. Voltage difference bet... | 07/09/2002 |
