Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7288983 | Method and circuit for providing a temperature dependent current source A programmable temperature compensation circuit having a bandgap circuit for generating a first temperature-independent voltage reference signal, VREF and a second temperature-dependent voltage signal, VTEMP. A two-input buffer amplifier is cou... | 10/30/2007 |
| 7271595 | Sensor detection apparatus and sensor Provided are two monitor circuits for monitoring two input signals of an input stage differential amplifier, respectively, and two monitor circuit for monitoring two output signals of the input stage differential amplifier, respectively. When failure occurs at the b... | 09/18/2007 |
| 7231325 | System for evaluating a sensor signal The inventive device for evaluating the sensor signal includes the provider for providing the sensor signal, the processor for processing the sensor signal and for providing an information signal comprising information regarding the amplitude course of the sensor si... | 06/12/2007 |
| 7224153 | Apparatus and method to compensate for effects of load capacitance on power regulator A power regulator has an output for regulated power that is connected to supply power to a load. The load can have various electrical characteristics, including requiring a rapid transient response. The transient response amplitude for the power regulator is decreas... | 05/29/2007 |
| 7119529 | Circuit arrangement with a resistor voltage divider chain A description is given of a circuit arrangement with a resistor voltage divider chain which comprises a number N of two-terminal resistors which are connected in series between a number N+1 of connection points, with N being greater than or equal to 2. In order to m... | 10/10/2006 |
| 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 |
| 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 |
| 6994777 | Chemical sensors utilizing conducting polymer compositions A chemical sensor for detecting the presence of one or more analytes. The sensor comprises at least one electrode pair and a photopolymerized electrically conducting polymer composition disposed in contact between each of the electrode pairs. Each polymer compositio... | 02/07/2006 |
| 6985342 | Linearly adjustable logarithmic output current sensing resistance system and method A resistance network is provided for synthesizing a non-linear logarithmic response in the resistance of the network comprising a potentiometer from the change of the resistance of the potentiometer. The network additionally comprises a set of resistors. The potenti... | 01/10/2006 |
| 6979936 | Piezoelectric motors and motor driving configurations A piezoelectric motor comprising: a layer of piezoelectric material having narrow edge surfaces and first and second large face surfaces, formed with at least three arms, each extending radially outward from a common central region and terminating in an end; and at ... | 12/27/2005 |
| 6960980 | Power converter with shunt resistor A power converter includes a shunt resistor constituted by a shunt resistance and a plurality of main electrodes made of a sheet-like resistive material. In the shunt resistor, plates lower in volume electric resistivity than the resistive material, higher in therma... | 11/01/2005 |
| 6651020 | Method and apparatus for economical drift compensation in high resolution measurements A system for measuring differences in a physical variable, such as temperature or voltage, by utilizing predictable behavior in the relative time drift of offset curves for various circuit elements, including, for example, two sensors coupled to a differe... | 11/18/2003 |
| 6522120 | Load driving apparatus A load driving apparatus comprises a power supply, a load circuit, a first switch, a limiting resistor, a second switch and a controller. The power supply voltage is applied to the load circuit by the power supply, and the load is driven. The first switch... | 02/18/2003 |
| 6459216 | Multiple CCFL current balancing scheme for single controller topologies The multiple lamp circuit for minimizing lamp current imbalance comprises at least one transformer comprising primary windings and secondary windings. Multiple lamps are coupled in serial to the secondary windings of the transformer. Multiple separated la... | 10/01/2002 |
| 5939872 | Thermal overload protection system providing supply voltage reduction in discrete steps at predetermined temperature thresholds A power supply control system which prevents thermal overload of the apparatus to which power is being supplied. The supply voltage is controlled so that as the temperature of the apparatus increases beyond a predetermined threshold the supply voltage is ... | 08/17/1999 |
| 5726564 | Temperature-compensating method for a resistance bridge circuit, resistance bridge circuit with temperature-compensating circuit, and acceleration sensor using the same A temperature-compensating method of a resistance bridge circuit constructed of a plurality of resistance devices, comprises: a first step of adjusting in direction and in curvature a temperature characteristic curve of an output signal issued from the re... | 03/10/1998 |
| 5532580 | Circuit for weighted addition A circuit for weighted addition which includes a transistor having a gate and a plurality of resistance elements. Each resistance element has a first and second end. The first end of each resistance element is impressed with a voltage, and the second end ... | 07/02/1996 |
| 5378931 | Low leakage fuse blown detection circuit A fuse blown detection circuit for use in conjunction with the control transistor output circuits of a programmable controller which provides low leakage after the fuse is blown. The detection circuit comprises a pair of voltage dividers and a diagnostic ... | 01/03/1995 |
| 5197334 | Programmable compensation of bridge circuit thermal response The present invention provides compensation for temperature in a transducer by connecting the adjustment resistors to the transducer itself to provide a correct transducer output. A number of switches are used to couple the adjustment resistors to the tra... | 03/30/1993 |
| 5164653 | Battery discharge control system Apparatus for controlling rate of battery current discharge, comprising, variable means applying resistance load to the battery output, comparator means connected for defining and communicating a targeted battery discharge current level set point, sensor ... | 11/17/1992 |
| 5146154 | Circuit with ratiometric analog inputs A circuit disclosed maintains ratiometric analog inputs to an integrated circuit using a network of resistors, some of which are external to the integrated circuit and some of which are internal to the integrated circuit, reducing expense. The analog inpu... | 09/08/1992 |
| 5097197 | Signal level attenuating device A signal level attenuating device having an analog attenuator and a digital attenuator which respectively include resistance attenuators. The resistance attenuators have the same attenuating characteristics and are mutually coupled. When one of the resist... | 03/17/1992 |
| 5079500 | Potentiometric circuit arrangement A potentiometric circuit arrangement 30 is based on a resistive potentiometer tarck 11 with a capacitively coupled `wiper` 14', the resistive track being driven by switched alternating voltages of +/- V at 12 and -/+(X-V) at 13, where X is a reference vol... | 01/07/1992 |
| 4992724 | Bridge balancing circuit A bridge balancing circuit includes a bridge having a resistance change type sensor, a differential amplifier for extracting a voltage difference across two central nodes of the bridge, a comparator connected to the output terminal of the differential amp... | 02/12/1991 |
| 4952865 | Device for controlling temperature charactristics of integrated circuits A circuit dedicated to the stabilization of integrated circuit temperature charactristics is achieved by integrating on the same semiconductor material chip as the integrated circuit and a device comprised of a sensor having at least two resistors (R1, R2... | 08/28/1990 |
| 4736155 | Transducer temperature control circuit and method An electronic control circuit for a bridge resistance circuit (10) of a transducer (20) has a switchable source of constant magnitude current (22) to direct current pulses of constant amplitude through the bridge circuit. A temperature setpoint detector (... | 04/05/1988 |
| 4667516 | Circuit arrangement for compensating for the temperature dependence of the sensitivity and the null point of a piezoresistive pressure sensor A circuit arrangement for compensating for the temperature dependence of the sensitivity and of the null point of a piezoresistive pressure sensor having a temperature sensor thermally coupled thereto. The temperature sensor is coupled to an auxiliary amp... | 05/26/1987 |
| 4633163 | Mid-value circuit and control system A control system for regulating a system parameter includes three sensing elements to independently sense a single system parameter and provide respective feedback signals. Three substantially identical controllers are responsive to these feedback signals... | 12/30/1986 |
| 4611163 | Temperature compensated resistance bridge circuit A resistance bridge is temperature-compensated to provide acceptable values of sensitivity error and zero input error, by using a temperature-responsive current source from which are derived voltages which modify the bridge supply voltage and the bridge o... | 09/09/1986 |
| 4565097 | Method and apparatus for transducer error cancellation A transducer unit comprised of a pair of transducers coupled together in a manner such that the offsets, drifts and the like of the circuit elements of one transducer are opposed by and cancelled out by the circuit elements of the other transducer. The tr... | 01/21/1986 |
| 4532468 | Temperature-compensating voltage generator circuit A temperature-compensating voltage generator circuit for compensating the temperature characteristics of an electric device whose electrical characteristics vary in accordance with a change of the ambient temperature and can be changed or controlled by a ... | 07/30/1985 |
| 4419620 | Linearizing circuits for a semiconductor pressure transducer A circuit for linearizing the output of a differential pressure transducer includes first and second operational amplifiers. Each amplifier is associated with threshold devices as diodes so that one amplifier will be active for one condition of output pol... | 12/06/1983 |
| 4171509 | Bridge drive circuit and method A bridge circuit for a measurement bridge of the type using four impedance arms provides an output referenced to ground which is a function of the impedances in the respective arms. The bridge circuit includes an impedance bridge comprising first, second,... | 10/16/1979 |
| 4001669 | Compensating bridge circuit A compensating bridge circuit is used for measuring physical quantities dctly. The circuit comprises an unbalanced Wheatstone bridge having a quantity-dependent voltage at an output thereof. An ohmic potential divider circuit produces a divisional voltag... | 01/04/1977 |
| 3967188 | Temperature compensation circuit for sensor of physical variables such as temperature and pressure A temperature compensation circuit for sensors of physical variables, such as temperature and pressure, employs an effective constant current source that is sensitive to ambient temperature and which has an adjustable thermal slope and an adjustable outpu... | 06/29/1976 |
| 3940686 | Linear output bridge circuit A digital set point circuit comprised of a plurality of resistors arranged in a bridge circuit with a condition sensor and switchably controlled to characterize the condition sensor to provide a substantially linear output from the bridge.... | 02/24/1976 |
