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7420106 |
Scanning probe characterization of surfaces
Characterizing dielectric surfaces by detecting electron tunneling. An apparatus includes an atomic force probe. A mechanical actuator is connected to the atomic force probe. A mechanical modulator...
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7397266 |
System and method for testing the electromagnetic susceptibility of an electronic display unit
A system and method for testing the electromagnetic (EM) susceptibility of an electronic display unit monitors the light emitted from the electronic display unit as EM noise is applied at a...
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7271593 |
Contactless system and method for detecting defective points on a chargeable surface
A method for detecting charge defect spots (CDSs) on a chargeable surface is provided, including charging the chargeable surface to receive and hold a first voltage charge, spacing a surface of a...
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7248055 |
Electrostatic discharge transient and frequency spectrum measurement of gap discharge
An electrostatic discharge testing system includes a measurement chamber to hold a discharge electrode and a target electrode in separation from each other, a first conductive path to supply an ESD...
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7053625 |
Method and apparatus for detecting wear in components of high voltage electrical equipment
A tracer material is embedded in a component of electrical equipment to detect excessive wear of the component when it is exposed to an electrical arc. As the component wears, the tracer material...
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7038464 |
Carrier line oriented spin high voltage leak detection system and method
Inspection and leak detection of electrically insulated containers having an electrically conductive solution therein in high speed assembly carrier line systems, includes controlled carrier...
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6858448 |
Method for evaluating and manufacturing a semiconductor device
A semiconductor device evaluation method includes the steps of measuring a total injected electron quantity before an insulating film causes a dielectric breakdown and obtaining the ratio between...
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6650959 |
Method and apparatus for the detection of foreign materials in moving textile materials
A method and an apparatus for detecting foreign fibers in a moving textile material, in particular in moving threads, yarns or slivers, include providing a probe for picking up triboelectric...
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6614234 |
Electric discharge machine
An electric discharge machine for machining a workpiece by an electric discharge by supplying a machining fluid to a gap between an electrode and the workpiece and supplying pulses to the workpiece...
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6528985 |
Non-destructive testing of passive components
A device and a method for the non-destructive testing of passive components by applying an electrical test signal to passive components and an acoustic emission is measured by a microphone and, the...
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6507197 |
Electrostatic force detector with cantilever for an electrostatic force microscope
An electrostatic force microscope wherein electrostatic force applied to the detector is determined through obtaining the field distribution on several different shaped detectors with the...
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6469513 |
Automated stationary/portable test system for applying a current signal to a dielectric material being tested
An automated test system is provided for evaluating characteristics of photoreceptors used in the electrophotographic process. The test system includes a dielectric material support adapted to...
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6466032 |
Method and apparatus for identification of the disconnection of a protection device
The invention relates to a method and apparatus for identification of the disconnection of a current protection device, in particular of a protection device which is connected in series with a...
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6385561 |
Automatic fault location in cabling systems
A method and apparatus ( 12-20, 32 ) for automatically locating faults in a network of signal carriers (cables) utilises an interrogation waveform which is pulse-like in form and receives composite...
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6326792 |
Method and apparatus for lifetime prediction of dielectric breakdown
A stressing voltage is applied to a dielectric film (step S23). An A-SILC is monitored with stressing time and is plotted on a log-log scale (step S24). A straight line is applied to the plotting,...
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6150824 |
Contactless system for detecting subtle surface potential charge patterns
A contactless process for detecting electrical patterns on the outer surface of a member comprising providing a member having a charge pattern on an outer surface, repetitively measuring the charge...
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6119536 |
Constant distance contactless device
A contactless system including an aerodynamically floatable device, a member having an outer surface adjacent to and spaced from the aerodynamically floatable device, a support mechanism adapted to...
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6034530 |
Apparatus and method for measuring a movable electric charge induced in a conductive member
A measuring apparatus has a capacitor incorporated in a handy measuring tool electrically connected to a voltage meter, and a sharp leading end of the capacitor is brought into contact with a lead...
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6008653 |
Contactless system for detecting microdefects on electrostatographic members
A contactless process for detecting surface potential charge patterns in an electrophotographic imaging member including at least one photoconductive imaging layer having an imaging surface,...
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6002259 |
Electrostatic adhesion tester for thin film conductors
A electrostatic adhesion tester for thin film conductors. In one embodiment, a device is provided for testing the adhesion strength of a thin film conductor that has been formed upon a substrate....
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5959447 |
Non-contact measurement of electrical waveforms on the surface of a sample using time domain gating
A method and an apparatus for providing non-contact measurement of waveforms proximate to a surface of a sample. In one version, the describe apparatus includes a probe waveform generator that...
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5949235 |
System and method for detection and control of ungrounded parts in a production coating line
A system and method for detecting and controlling ungrounded parts during the electrostatic coating process in order to improve production flow, provide an overall cost saving by efficient use of...
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5936419 |
Test method and apparatus utilizing reactive charging currents to determine whether a test sample is properly connected
Prior to beginning a dielectric withstand (leakage current) or insulative impedance test, but after applying the high voltage that will be used in the test, the temporary charging currents...
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5912559 |
Apparatus for detection and localization of electrostatic discharge (ESD) susceptible areas of electronic systems
An apparatus and method are disclosed for use in detecting and localizing electrostatically susceptible areas of electronic systems. An exemplary apparatus includes: (1) an ESD gun for providing a...
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5812062 |
Glass coated pipe system and testing method
The invention is directed to a piping system for a side wall vented mid-efficiency furnace. The piping system comprises a plurality of sections of steel pipe having a glass coated interior surface....
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5796256 |
ESD sensor and method of use
An ESD sensor includes a plurality of layers of dielectric material positioned on a substrate, each having a different thickness, a first contact positioned adjacent each of the plurality of layers...
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5703487 |
Detection of charge deficient spot susceptibility
A process is disclosed for ascertaining the microdefect levels of an electrophotographic imaging member comprising the steps of measuring either the differential increase in charge over and above...
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5624625 |
Process for the preparation of ceramic materials free from auto-adhesion under and during aging
Process for the preparation of ceramic materials for parts having friction surfaces subject to friction and free from auto/self-adhesion under stress or during aging. A precursor of the ceramic...
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5604438 |
Controlled spark ignition testing apparatus
A high voltage differential is applied across two separated electrodes by a oltage supply. Between these electrodes is located a sample of the solid propellant or other energetic material. The...
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5598099 |
System and method for coincidence detection of ungrounded parts with detectors located within and outside a production coating area
A system and method for coincidence detection of ungrounded or inadequately grounded parts during the electrostatic coating process in order to improve production flow, provide an overall cost...
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5594349 |
Dielecrtric breakdown prediction apparatus and method, and dielectric breakdown life-time prediction apparatus and method
An accurate dielectric breakdown prediction method and a prediction method in which accurate time dependent dielectric breakdown (TDDB) characteristics can be obtained on the basis of dielectric...
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5504556 |
Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus
Device and method for evaluating a defect of a photoconductive body in which the position and number of defects such as pinholes in the photoconductive body are detected. The defect evaluation...
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5448337 |
Method and apparatus for determining the charge or voltage distribution of an electrophotographic surface
A high spatial resolution low noise method and apparatus for determining electrical characteristics such as the voltage density distribution or the charge density distribution of an...
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5410254 |
Method for optimizing the structure of a transistor to withstand electrostatic discharge
The present invention relates to a system and method of quantitatively evaluating the amount of electrostatic discharge that integrated circuit field effect transistors may endure before material...
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5307672 |
Method and apparatus to check the state of wear in a covering fabric of a driving belt
A driving belt (2) operatively mounted on at least a first (3a) and second (4) pulleys electrically insulated from each other, is provided with an electrically conductive covering fabric acting in...
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5200737 |
System and method for detecting partial discharge of gas-insulated switchgear
A system and method for detecting partial discharge of gas-insulated switchgear wherein a high-frequency component and the fundamental wave component of the voltage applied to the conductor of the...
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5119030 |
Apparatus for electrically inspecting the surface of a drum
Apparatus for determining the physical uniformity of a charged drum surface wherein current signals are induced in sensing electrodes in response to variation in drum surface charge. The sensing...
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5101159 |
Electrostatic pin hole detector
A surface capable of holding electrical charge wherein at least one sensing electrode having an edge is located in close physical proximity to the surface and is disposed so that upon relative...
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4857853 |
On-line electrostatic defect detector for polyester base
An electrical conductor is spaced close to an insulating web to detect electrostatic surface charges on the surface of the web.
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4823088 |
Method of and apparatus for testing semiconductor device for electrostatic discharge damage
A method of testing the susceptibility of a semiconductor device having a dielectric package to withstand electrostatic charges charged on the dielectric package, comprising the steps of:...
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4816666 |
Apparatus and methods for inspection of electrical materials and components
A capacitor has a top plate 2 in the form of a photodiode array and a bottom plate 2. An RF source 3 is connected between plates 1 and 2. Insulating or semiconducting material to be tested is...
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4803435 |
Method and apparatus for detecting dielectric defects
Small and/or large defects in dielectric materials can be detected by bombarding one surface of the dielectric material with gas ions in order to impart a charge on that surface while the opposite...
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4794797 |
Method of detecting structural abnormality of substance
A method of detecting structural abnormalities of a structure composed of an electrically conducting crystalline or non-crystalline substance with no band gap. Piezoelectricity and/or...
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4782299 |
Methods of arc and corona monitoring for high voltage generators
There is disclosed a method for determining the location of an arc or corona as occurring in a high voltage power supply. The technique utilizes sheets of sensitive photographic film which are...
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H000536 |
Method of detecting and locating an electrostatic discharge event
A method of locating an electrostatic discharge event in a predetermined ucture by sensing electromagnetically that an electrostatic discharge event has occurred and producing a trigger signal from...
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4760343 |
Apparatus for detecting defective insulators in an insulating column supporting an electrical conductor in a power circuit line
A method and apparatus for detecting defective insulators in an insulating column supporting an electrical conductor in a power line. The column is made of a plurality of serially connected...
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4758792 |
Method for utilizing a spherical dipole probe for detecting faults in high voltage transmission line insulators
A method is provided for utilizing a nonintrusive, noncontacting electric field sensing device to detect faults in high voltage transmission line insulators. The electric field surrounding an...
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4668916 |
Liquid crystal non-destructive inspection of non-ferrous metals
A non-destructive inspection arrangement for ferrous and non-ferrous metallic workpieces. The inspection arrangement employs a liquid crystal indicator medium and electrical current flow through...
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4620145 |
Non-destructive detection of voids in plastic materials
A sensitive yet non-destructive method and apparatus for detecting the presence of voids contained within dielectric materials is disclosed which comprises applying a voltage across the dielectric...
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4443764 |
Method for non-destructive detection and characterization of flaws
A method for the nondestructive testing and evaluation of insulating materials is disclosed. The method comprises applying an electrostatic charge pattern to one surface of the material; providing...
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