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| Number | Title | Issue Date |
| 7339322 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the ga... | 03/04/2008 |
| 7323877 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the ga... | 01/29/2008 |
| 7259519 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 08/21/2007 |
| 7249990 | Electron-emitting device manufacturing method, electron source manufacturing method, image-forming apparatus manufacturing method, and information displaying and playing apparatus manufacturing method Provided is an electron-emitting device using a carbon fiber as an electronic member. A carbon fiber through which a cathode electrode and a control electrode are short-circuited is removed to obtain an electron-emitting device having a uniform electron emission cha... | 07/31/2007 |
| 7116055 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the ga... | 10/03/2006 |
| 6952097 | Method for slice position planning of tomographic measurements, using statistical images In a method and computer program product for operating a tomographic imaging apparatus, a standard measurement protocol is generated by displaying a planning representation of a standard object, defining a spatial position of a standard imaging area in the planning ... | 10/04/2005 |
| 6864685 | Process for anticipating the service life of a rare gas discharge lamp and a system for anticipating the service life of rare gas discharge lamp The rare gas discharge lamp is supplied with a current, which is lower than the rated current, the voltage of the rare gas discharge lamp is determined at this instant and the swing width of this voltage is measured. A comparator for comparing measured values of the... | 03/08/2005 |
| 6631547 | Manufacturing method for thin film magnetic heads To measure positions of a plurality of thin film magnetic head elements formed in a line on a bar, the quantity of positions of samples in the bar is estimated from the magnetic head elements the amount of deviation in position of the next element, and th... | 10/14/2003 |
| 6097191 | Testing high intensity discharge lamp fixtures A diagnostic device and associated operational procedure are used to both verify the integrity of components of high intensity discharge light fixtures and also troubleshoot problems in the wiring connecting the light fixture to the AC power source (trans... | 08/01/2000 |
| 6032524 | Method and apparatus for detecting p-static interference source The detection of components that cause p-static interference with communications and navigation equipment is essential to the maintenance of an aircraft. A p-static source locator uses two leads to supply a voltage between components of the aircraft. If t... | 03/07/2000 |
| 5528147 | Apparatus for detecting gas discharge lamp faults A capacitor (16) coupled in series with series coupled gas discharge lamps (11 and 12) will effectively block direct current from flowing through the capacitor (16). A detector circuit including a high impedance resistor (17) and transistor (18) provide a... | 06/18/1996 |
| 5012194 | Method testing electron discharge tubes A method of testing an electron discharge device incorporating a cathode electrode heated by bombardment of electrons emitted by a heater electrode so that selected parameters of such device may be determined without requiring that such device be operatio... | 04/30/1991 |
| 4439735 | Method and apparatus for testing line screen CRT registration A method and apparatus are described for testing a line screen CRT for misregistration between its electron beam and the beam's phosphor stripe targets. The test method includes sensing light output at a plurality of test areas on the CRT screen as the el... | 03/27/1984 |
| 4386320 | X-Ray system signal derivation circuits for heat unit indicators and/or calibration meters Signal as the milliampere and/or kilovolt signals are monitored from the X-ray tube system via the high tension transformer thereof. These signals may be connected to a heat unit indicator or a calibration meter or both. With the heat unit indicator, the ... | 05/31/1983 |
| 4297638 | X-ray system signal derivation circuits for heat unit indicators and/or calibration meters Signals as the milliampere and kilovolt signals are monitored from the X-ray tube system via the high tension transformer thereof. These signals may be connected to a heat unit indicator or a calibration meter or both. With the heat unit indicator, the he... | 10/27/1981 |
| 4275347 | Precision cathode current regulator A precision cathode current regulator for controlling cathode current in a cathode-ray tube having a field effect transistor which is stabilized by an operational amplifier connected in a feedback mode. A second operational amplifier is electrically coupl... | 06/23/1981 |
