Patent application number | Description | Published |
20090211989 | SYSTEMS AND METHODS FOR CONVEYING MULTIPLE BLOOD COMPONENTS TO A RECIPIENT - Systems and methods are provided for conveying an amount of red blood cells and an amount of plasma to a blood source. Blood is conveyed from a blood source into a separation device and the separation device is operated to separate the blood into a layer containing red blood cells and a layer containing plasma. Red blood cells and plasma are removed from the separation device and volumes of the red blood cells and plasma are conveyed to the blood source. The volumes of red blood cells and plasma are alternately conveyed to the blood source for said amounts of red blood cells and plasma. | 08-27-2009 |
20120175313 | SYSTEM AND METHOD FOR ADJUSTMENT OF BLOOD SEPARATION PROCEDURE PARAMETERS - Systems and methods are provided for automatically adjusting the operational parameters of a blood separation procedure. A blood separation device has an inlet for passing fluid thereinto and an outlet for removing fluid therefrom. A pump system is provided for moving fluid into and out of the device. In use, blood is conveyed into the device, where platelets are separated from at least a portion of the blood. A controller determines the amount of platelets in the device. Based at least in part on the amount of platelets in the device, corrective action is taken to avoid platelet aggregation in the device. The corrective action may be conveying an elevated amount of anticoagulant into the blood and/or the device and may be initiated when the determined amount of platelets approaches, meets, or exceeds a threshold predicted likelihood of platelet aggregation. | 07-12-2012 |
20120199539 | CONTROL OF INTERFACE BETWEEN SEPARATED BLOOD COMPONENTS UNDER LIPEMIC AND HEMOLYTIC CONDITIONS - Blood separation systems and methods are provided for controlling the interface between separated blood components. The system includes a blood separation chamber configured to separate blood into first and second blood components and an outlet line for removing at least a portion of the first blood component from the blood separation chamber. A primary optical sensor assembly is associated with the blood separation chamber to directly monitor the interior of the blood separation chamber. A secondary optical sensor assembly is associated with the outlet line to monitor the first blood component in the outlet line. The system also includes a controller programmed to select between the primary optical sensor assembly and the secondary optical sensor assembly for monitoring contamination of the first blood component. The system is particularly advantageous for preventing contamination of separated plasma which is lipemic or hemolytic. | 08-09-2012 |
20120297255 | SYSTEM AND METHOD TO BETTER ASSURE CORRECT USE OF PRE-PROGRAMMED MEDICAL DEVICES - Systems and methods are provided for performing a medical procedure with respect to a subject. A data storage location of the system is pre-programmed with a plurality of subject data entries, each having subject-specific information associated with it. A user interface receives an identity input from a subject, which corresponds to the identity of the subject. A controller is associated with the database and the user interface, and is programmed to compare the identity input to the subject data entries. If the identity input corresponds to the subject-specific information of a subject data entry, the controller commands a treatment device to perform a medical procedure with respect to the subject. Otherwise, if the identity input does not correspond to the subject-specific information of any of the subject data entries, the controller generates an error signal which prevents the performance of the medical procedure with respect to the subject. | 11-22-2012 |
20130267884 | Systems and Methods for Achieving Target Post-Procedure Fraction of Cells Remaining, Hematocrit, and Blood Volume During a Therapeutic Red Blood Cell Exchange Procedure With Optional Isovolemic Hemodilution - Systems and methods for performing a therapeutic red blood cell exchange procedure are disclosed. In one aspect, a system includes a first flow path for flowing whole blood from a patient. A separator communicates with the first flow path for separating at least red blood cells from plasma. Second and third flow paths communicate with the separator for respectively flowing the separated plasma and red blood cells from the separator. A flow controller is associated with the flow paths to control fluid communication between the flow paths. The controller is configured to perform the procedure to achieve a target fraction of patient cells remaining, target hematocrit, and a target patient fluid volume change at the completion of the procedure based on data input by the operator. | 10-10-2013 |
20140008277 | Control Of Interface Between Separated Blood Components Under Lipemic And Hemolytic Conditions - Blood separation systems and methods are provided for controlling the interface between separated blood components. The system includes a blood separation chamber configured to separate blood into first and second blood components and an outlet line for removing at least a portion of the first blood component from the blood separation chamber. A primary optical sensor assembly is associated with the blood separation chamber to directly monitor the interior of the blood separation chamber. A secondary optical sensor assembly is associated with the outlet line to monitor the first blood component in the outlet line. The system also includes a controller programmed to select between the primary optical sensor assembly and the secondary optical sensor assembly for monitoring contamination of the first blood component. The system is particularly advantageous for preventing contamination of separated plasma which is lipemic or hemolytic. | 01-09-2014 |
20140069868 | Methods for Automated Blood Prime - A method is disclosed for priming a kit for use in a therapeutic apheresis procedure with previously-collected blood prior to flowing the patient's whole blood into the inlet line of the kit, as part of a procedure in which a selected blood component is separated from a patient's whole blood, and replaced with a previously-collected blood component. The operator enters into the controller of the separation device the hematocrit value of the previously-collected blood. Then, in response to prompts by the controller, the operator enters a target hematocrit value for the previously-collected blood and an identification of the portion of the kit to be primed. The identified portion of the kit is automatically primed with the previously-collected blood. The patient is then connected to the inlet line of the kit in response to a prompt from the controller and the therapeutic procedure is commenced. | 03-13-2014 |
20140350450 | PERFORMING AN APHERESIS PROCEDURE ON A HUMAN SUBJECT WITH IDENTITY INPUT DATA - Systems and methods are provided for performing a medical procedure with respect to a subject. A data storage location of the system is pre-programmed with a plurality of subject data entries, each having subject-specific information associated with it. A user interface receives an identity input from a subject, which corresponds to the identity of the subject. A controller is associated with the database and the user interface, and is programmed to compare the identity input to the subject data entries. If the identity input corresponds to the subject-specific information of a subject data entry, the controller commands a treatment device to perform a medical procedure with respect to the subject. Otherwise, if the identity input does not correspond to the subject-specific information of any of the subject data entries, the controller generates an error signal which prevents the performance of the medical procedure with respect to the subject. | 11-27-2014 |
20140357465 | SYSTEMS AND METHODS FOR EXTRACTING PLATELET-RICH PLASMA FOR THERAPEUTIC INJECTION - Systems and methods are provided for processing blood or a fluid containing blood plasma and platelets. The blood or fluid is continuously added into a fluid separation chamber, which is used to isolate platelet-rich plasma therein. At least a portion of the platelet-rich plasma is automatically transferred from the fluid separation chamber into an injection device, with the fluid separation chamber and the injection device comprising components of a disposable flow circuit, which may be a closed system. One or more injection devices may be connected to a collection container or a pump device of the disposable flow circuit. | 12-04-2014 |
20150115180 | METHOD AND APPARATUS TO VERIFY CORRECT REPLACEMENT FLUID IN A THERAPEUTIC EXCHANGE PROCEDURE - A method and apparatus are provided for automatically detecting the type of replacement fluid loaded by the operator during a therapeutic exchange procedure and to provide a warning alarm if an incorrect fluid is used. After the operator connects the container of replacement fluid to the replacement fluid line of a single-use kit and enters into the controller an identification of the exchange procedure to be performed, the replacement fluid is flowed through a segment of the kit in proximity to a sensor associated with the hardware component that detects the type of fluid flowing through the segment. The controller verifies whether the replacement fluid detected in the segment corresponds to that appropriate for the selected exchange procedure, and notifies the operator in the event that an incorrect replacement fluid has been loaded. | 04-30-2015 |
Patent application number | Description | Published |
20090012248 | HIGH METATHESIS ACTIVITY RUTHENIUM AND OSMIUM METAL CARBENE COMPLEXES - Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed. Also disclosed are methods of making the carbene compounds. The carbene compounds are of the formula | 01-08-2009 |
20090012254 | HIGH METATHESIS ACTIVITY RUTHENIUM AND OSMIUM METAL CARBENE COMPLEXES - Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed. Also disclosed are methods of making the carbene compounds. The carbene compounds are of the formula | 01-08-2009 |
20100323177 | Graphene oxide sheet laminate and method - A macroscale sheet laminate includes individual graphene oxide sheets layered one on another in a manner to form a self-supporting paper-like laminated product. The product can be fabricated by making a suspension of individual graphene oxide sheets and assembling the graphene oxide sheets as a laminate on a fluid-permeable support by flow-directed assembly. The laminate is dried and released from the membrane filter as a self-supporting sheet laminate. | 12-23-2010 |
20100323178 | Ceramic composite thin films - A ceramic composite thin film or layer includes individual graphene oxide and/or electrically conductive graphene sheets dispersed in a ceramic (e.g. silica) matrix. The thin film or layer can be electrically conductive film or layer depending the amount of graphene sheets present. The composite films or layers are transparent, chemically inert and compatible with both glass and hydrophilic SiOx/silicon substrates. The composite film or layer can be produced by making a suspension of graphene oxide sheet fragments, introducing a silica-precursor or silica to the suspension to form a sol, depositing the sol on a substrate as thin film or layer, at least partially reducing the graphene oxide sheets to conductive graphene sheets, and thermally consolidating the thin film or layer to form a silica matrix in which the graphene oxide and/or graphene sheets are dispersed. | 12-23-2010 |
20110223405 | Composite polymer film with graphene nanosheets as highly effective barrier property enhancers - Composite polymer films or layers have graphene-based nanosheets dispersed in the polymer for the reduction of gas permeability and light transmittance. | 09-15-2011 |
20110256376 | Composite graphene oxide-polymer laminate and method - A macroscale, self-supporting, composite laminate sheet includes individual, layered graphene oxide sheets and a polymer in spaces between the sheets. This composite product can be fabricated by combining a suspension of individual graphene oxide sheets and a solution of polymer, passing the resulting fluid through a fluid-permeable support, and assembling the graphene oxide sheets and polymer as a laminate sheet by flow-directed assembly. The laminate is dried and released from the membrane filter as a self-supporting thin films. | 10-20-2011 |
20130225774 | HIGH METATHESIS ACTIVITY RUTHENIUM AND OSMIUM METAL CARBENE COMPLEXES - Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed-of the formula | 08-29-2013 |
20130295367 | Composite polymer film with graphene nanosheets as highly effective barrier property enhancers - Composite polymer films or layers have graphene-based nanosheets dispersed in the polymer for the reduction of gas permeability and light transmittance. | 11-07-2013 |
20140051817 | HIGH METATHESIS ACTIVITY RUTHENIUM AND OSMIUM METAL CARBENE COMPLEXES - Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed-of the formula | 02-20-2014 |
20150027309 | SELECTIVE ADSORBENT - Embodiments include selective adsorbents having a structure of Formula (I) where a connection to X represents a connection to a structure of Formula (II), and a connection to Y represents a connection to a structure of Formula (III), where each R | 01-29-2015 |
20160016158 | Catalyst Composition and Process for Preparing Olefin Oxides - A catalyst composition comprising (a) a manganese-containing compound and (b) a carboxylic acid functionalized metal organic framework (MOF) compound; and a process for preparing an olefin oxide compound product including reacting (a) at least one olefin compound with (b) at least one oxidant in the presence of (c) the above catalyst composition. | 01-21-2016 |
Patent application number | Description | Published |
20090008993 | Hybrid electromechanical power transfer system - An electromechanical power transfer system that transfers power between a prime mover and a combination of multiphase alternating current (AC) and direct current (DC) electrical power systems, comprises: a dynamoelectric machine that has a rotor assembly coupled to the prime mover, a main stator with a multiphase alternating current (AC) winding coupled to a main stator bus and a control coil with a winding that varies the output of the main stator with the application of control coil current; a matrix converter coupled to the main stator bus for converting AC on the main stator bus to AC of a desired electrical frequency and potential on an AC system bus; an active rectifier coupled to the main stator bus for converting AC on the main stator bus to DC of a desired potential on a DC bus; and a system control unit for generating the control coil current with a level that regulates the output of the main stator on the main stator bus, controlling the output of the matrix converter to regulate the output of the AC system bus and controlling the output of the active rectifier to regulate the output of the DC bus. | 01-08-2009 |
20090016089 | Electromechanical power transfer system with even phase number dynamoelectric machine and three level inverter - An electromechanical power transfer system that converts direct current (DC) electrical power to variable mechanical power, comprises: a source of DC that has a neutral ground, a positive potential output with a level of electrical potential that is positive relative to the neutral ground and a negative potential output with a level of electrical potential that is negative relative to the neutral ground; a multiphase alternating current (AC) dynamoelectric machine with an even number of phases; and a neutral point clamped (NPC) inverter system that receives electrical power from the positive and negative potential outputs the DC source to generate multiphase AC power for the dynamoelectric machine with the same number of even phases that exhibits no common mode potential/noise. | 01-15-2009 |
20090284997 | METHOD TO CREATE PWM SWITCHING WITH NEAR ZERO COMMON MODE NOISE - A method for controlling a three-level inverter with a two-level inverter controller uses a conversion circuit to process the two-level control signals and output a set of three-level control signals. | 11-19-2009 |
20100045108 | Power conversion architecture with zero common mode voltage - A controller for a power conversion system reduces common-mode voltage generated by the power conversion system by imposing a constraint on the control signals applied to the power conversion system. The power conversion system includes a plurality of switching devices that are responsive to control signals provided by the controller to selectively connect each output of the power conversion system to one of a plurality of inputs. The controller generates control signals based on a desired output of the power conversion system. In addition, the controller imposes a constraint on the control signals to reduce the common-mode voltage. The constraint is defined by assigning an integer value to each input of the power conversion system, and requiring that the selective connection of outputs to inputs must result in a sum of integer values equal to zero. | 02-25-2010 |
20100283415 | Motor Drive System with Flux Regulated PM Generator - A method of generating and controlling power for an alternating current (AC) motor by means of at least one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of the PMM, comprises the steps of: rotating the PM rotor at a velocity sufficient to develop a high frequency alternating current (HFAC) power output from the stator; transforming the HFAC output to produce a variable low frequency alternating current (AC) motor control output for the motor; sensing desired motor control parameters; generating a control signal responsive to the sensed parameters; and applying the control signal to the magnetic flux diverter circuit to control the motor control output. | 11-11-2010 |
20100284208 | POWER-CONVERSION CONTROL SYSTEM INCLUDING SLIDING MODE CONTROLLER AND CYCLOCONVERTER - A power-conversion control system includes an inverter, a cycloconverter, and a sliding mode controller. The inverter is operable to receive a DC voltage input and produce a first AC voltage output having a first frequency. The cycloconverter has a plurality of bidirectional switches, and is operable to receive the first AC voltage and to synthesize a second AC voltage having a second frequency that is lower than the first frequency. The sliding mode controller is operable to provide a control signal to command the plurality of bidirectional switches to turn OFF and ON when the first AC voltage is at a zero crossing condition. The sliding mode controller is also operable to selectively adjust the frequency and amplitude of the second AC voltage. | 11-11-2010 |
20100295517 | POWER GENERATING SYSTEM WITH FLUX REGULATED GENERATOR - A method for generating and controlling power by means of at least one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of the PMM, comprises the steps of: rotating the PM rotor at a velocity sufficient to develop a high frequency alternating current (HFAC) power output from the stator; transforming the HFAC output to produce a desired non-HFAC power output; sensing desired power output parameters; generating a control signal responsive to the sensed parameters; and applying the control signal to the magnetic flux diverter circuit to control the desired power output. | 11-25-2010 |
20110121769 | MULTI-TASKING POWER PROCESSOR FOR A VEHICLE ELECTRIC SYSTEM - A multi-tasking power processor ( | 05-26-2011 |
20110221404 | SSPC WITH ACTIVE CURRENT LIMITING - A power distribution module has an input line to receive power from a DC power source. A switch selectively opens the input line and blocks supply of power from the input line to an output line to be connected to a DC load. A solid state power control controls a gate drive for the switch. The solid state power control is operable to distinguish between a pre-charge mode, at which current is rushing to supply a capacitor in the downstream DC load, and a short circuit mode, at which a short circuit exists. | 09-15-2011 |
20110227406 | CONTROL METHOD FOR ELECTRICAL ACCUMULATOR UNIT - A power generation system has a generator, a power converter, a power bus and an electrical accumulator. The electrical accumulator stores power when the generator generates excess power and supplements power from the generator when the generator generates insufficient power. | 09-22-2011 |
20110286141 | SSPC for Soft Start of DC Link Capacitor - A solid state power controller (SSPC) for soft start of a direct current (DC) link capacitor of a DC power distribution system includes a power input connected to a DC power source of the DC power distribution system; a plurality of power switches arranged in parallel, the plurality of power switches being connected to a power output of the SSPC, the power output being connected to the DC link capacitor; and an SSPC controller configured to: pulse width modulate the plurality of power switches with a phase-shifted sequence in a current limiting mode; determine whether soft start is complete; and in response to determining that the soft start is complete, turn on the plurality of switches at a maximum gate-source voltage. | 11-24-2011 |
20110304942 | SSPC With Dual Fault Detectors - A solid state power controller (SSPC) for a direct current (DC) electrical system includes a high bandwidth fault detector, the high bandwidth fault detector configured to detect a possible fault and place a power switch of the SSPC in saturation at a predetermined current limit; and a low bandwidth fault detector, the low bandwidth fault detector configured to determine whether the possible fault is a confirmed fault, and in the event the possible fault is determined to be the confirmed fault, turning off the power switch, or in the event the possible fault is determined not to be the confirmed fault, turning on the power switch at a minimum on-resistance. | 12-15-2011 |
20120043815 | ACTIVE FILTERING ELECTRICAL ACCUMULATOR UNIT - A power generation system has a generator, a power bus and an electrical accumulator unit. The electrical accumulator unit includes an independent controller that actively filters transients from the power bus. | 02-23-2012 |
20120043822 | MODULAR ELECTRICAL ACCUMULATOR UNIT - A modular electrical accumulator unit includes multiple electrical accumulator unit modules, which are operated in conjunction with each other to form a single electrical accumulator unit. | 02-23-2012 |
20120043938 | METHOD FOR CONTROLLING AN ELECTRIC ACCUMULATOR UNIT - A power system has a generator, a variable load, and an electrical accumulator unit. The electrical accumulator unit stores power when the generator generates excess power, and supplements power from the generator when the generator generates insufficient power. | 02-23-2012 |
20120043944 | METHOD AND APPARATUS FOR AVERAGE CURRENT CONTROL - A method and apparatus for controlling a converter circuit within the electrical accumulator unit based on a comparison between an actual average converter current and a desired average converter current. | 02-23-2012 |
20120300350 | GRADUALLY REDUCING RESISTIVE CLAMP - A voltage spike protection system minimizes a voltage spike by connecting a resistive clamp to a power source when the voltage spike is detected. The voltage spike detection system disconnects the resistive clamp after a portion of the voltage spike is dissipated. | 11-29-2012 |
20130021712 | OVERVOLTAGE PROTECTION METHOD AND DEVICE - An example, overvoltage protection device includes a switch and a surge protection device that is selectively activated by actuating the switch. The switch is actuated in response to a voltage. An example method of absorbing an overvoltage includes sensing a voltage, and selectively activating a surge protection device in response to the sensed voltage. | 01-24-2013 |
20130279216 | COMPENSATING RIPPLE ON PULSE WITH MODULATOR OUTPUTS - A ripple compensation apparatus comprises a ripple detection unit to detect a ripple on a dual DC bus, a waveform generation unit to generate a modulated waveform based on a base waveform and the detected ripple, and a multi-phase control signal generation unit to receive the modulated waveform and to generate at least one pulse width modulated control signal based on the modulated waveform. | 10-24-2013 |
20140103650 | DUAL-DC BUS STARTER/GENERATOR - A system includes a starter/generator that receives AC power in a start mode, and generates AC power in a generate mode; and an inverter/converter circuit that converts the generated AC power from the starter/generator to DC power for a dual-DC bus during the generate mode, and converts DC power to AC power for the starter/generator during the start mode, wherein the inverter/converter circuit denies power flow from the dual-DC bus to the starter/generator during the generate mode. | 04-17-2014 |
20140104900 | SYSTEM AND METHOD FOR CONNECTING THE MIDPOINT OF A DUAL-DC BUS TO GROUND - A system includes a power source that provides alternating current (AC) power and is connected to system ground; a dual-DC bus that provides direct current (DC) power to a load, and comprises a positive line, a negative line, and a midpoint line; an active rectifier that converts AC power from the power source to DC power for the dual-DC bus; and an impedance circuit connected between the midpoint of the dual-DC bus and the system ground that provides impedance for third harmonic common-mode current. | 04-17-2014 |
20140104901 | EMI FILTERING FOR ACTIVE RECTIFIER POWER SYSTEMS - A system for filtering electromagnetic interference (EMI) includes a power source that provides alternating current (AC) power; a load; an active rectifier that converts AC power from the power source to direct current (DC) power for the load; and a filter connected between the power source and the active rectifier, wherein the filter comprises at least one notch filter that filters selected frequencies of EMI generated by the active rectifier. | 04-17-2014 |
20140334208 | SYNCHRONOUS RECTIFICATION IN THE THREE-LEVEL INVERTER-CONVERTER TOPOLOGIES - A power module for a three-level power inverter/converter that employs synchronous rectification for use in a uni-directional active rectifier mode to reduce static losses and enhance efficiency across the circuit. Each synchronous rectifier can be a silicon carbide (SiC) power MOSFET connected in parallel with a SiC power diode, for example. | 11-13-2014 |
20140369092 | METHOD OF REDUCING INPUT CURRENT DISTORTION IN A RECTIFIER - A method is disclosed for reducing input current harmonic distortion in a Vienna-type active rectifier that includes the steps of sensing voltage values from upper and lower halves of a DC bus associated with the rectifier, determining an average of the sensed voltage values, calculating upper and lower scale factors by dividing the sensed voltage values with the averaged sensed voltage value, rescaling a reference signal from a controller using the upper and lower calculated scale factors, and forward feeding the rescaled reference signal from the controller to a pulse width modulator to obtain a gate driver signal for power semiconductor switches of the rectifier. | 12-18-2014 |
20140369101 | METHOD OF DERIVING SWITCH CURRENT SIGNALS IN A RECTIFIER - A method of deriving synchronous switch currents for a three-phase Vienna-type active rectifier that includes the step of generating gate driver signals for each phase of the rectifier by pulse width modulation, wherein the gate driver signals include a top gate driver signal, a clamp gate driver signal and a bottom gate driver signal, and the step of deriving synchronous switch current signals from the gate driver signal, wherein the synchronous switch current signals include a top gate switch current signal, a clamp gate switch current signal and a bottom gate switch current signal. | 12-18-2014 |
20150349658 | REGULATED AC-DC HYBRID RECTIFIER - A regulated hybrid AC-DC rectifier employing a boost stage is disclosed herein. The regulated hybrid AC-DC rectifier comprises a 12 pulse inductive current splitter/merger (CSM) system coupled to a boost stage. The boost stage may be regulated using a PWM controller. The regulated hybrid AC-DC rectifier may further include a three phase input filter configured to regulate the harmonic content of the AC-DC hybrid converter within a desired limit. The regulated hybrid AC-DC rectifier may further comprise a notch filter system configured to tune out harmonic ripples at known intervals, such as 11 | 12-03-2015 |
Patent application number | Description | Published |
20090219034 | Diagnostic Circuit and Method of Testing a Circuit - A diagnostic circuit is configured for connecting to a unit under test that has a load and a sinusoidal source. The diagnostic circuit includes a voltage sensing device that has an input for sensing a signal, a first terminal for connecting to the load, a second terminal for connecting to the sinusoidal source, and a relay connected between the first and second terminals for connecting the sinusoidal source to the load. Clamping diodes are provide for clamping a sinusoidal signal and include a first clamping diode connected between a D/C voltage source and the input and a second clamping diode connected between ground and the input. A resistor is connected between the D/C voltage source and the first terminal. The diagnostic circuit verifies the operational functionality of the load, related wiring and connections. | 09-03-2009 |
20110248722 | Diagnostic Circuit and Method of Testing a Circuit - A diagnostic circuit is configured for connecting to a unit under test that has a load and a sinusoidal source. The diagnostic circuit includes a voltage sensing device that has an input for sensing a signal, a first terminal for connecting to the load, a second terminal for connecting to the sinusoidal source, and a relay connected between the first and second terminals for connecting the sinusoidal source to the load. Clamping diodes are provide for clamping a sinusoidal signal and include a first clamping diode connected between a D/C voltage source and the input and a second clamping diode connected between ground and the input. A resistor is connected between the D/C voltage source and the first terminal. The diagnostic circuit verifies the operational functionality of the load, related wiring and connections. | 10-13-2011 |
20150212148 | DIAGNOSTIC CIRCUIT FOR TESTING A CIRCUIT - A diagnostic circuit is configured for connecting to a unit under test that has a load and a sinusoidal source. The diagnostic circuit includes a voltage sensing device that has an input for sensing a signal, a first terminal for connecting to the load, a second terminal for connecting to the sinusoidal source, and a relay connected between the first and second terminals for connecting the sinusoidal source to the load. Clamping diodes are provide for clamping a sinusoidal signal and include a first clamping diode connected between a D/C voltage source and the input and a second clamping diode connected between ground and the input. A resistor is connected between the D/C voltage source and the first terminal. The diagnostic circuit verifies the operational functionality of the load, related wiring and connections. | 07-30-2015 |
20150323587 | DIAGNOSTIC CIRCUIT FOR TESTING A CIRCUIT - A diagnostic circuit is configured for connecting to a unit under test that has a load and a sinusoidal source. The diagnostic circuit includes a voltage sensing device that has an input for sensing a signal, a first terminal for connecting to the load, a second terminal for connecting to the sinusoidal source, and a relay connected between the first and second terminals for connecting the sinusoidal source to the load. Clamping diodes are provide for clamping a sinusoidal signal and include a first clamping diode connected between a D/C voltage source and the input and a second clamping diode connected between ground and the input. A resistor is connected between the D/C voltage source and the first terminal. The diagnostic circuit verifies the operational functionality of the load, related wiring and connections. | 11-12-2015 |