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8174211 Method and system for operating a discharge lamp such as to detect defective operation of the lamp  
A method for detecting defective operation of a discharge lamp includes determining the lamp impedance and establishing that the lamp is operating in an incandescent mode if it is found that the...
7795817 Controlled plasma power supply  
A plasma power supply system for producing electrical power in the range between 1 kW and 100 kW for a plasma processing system and supplying the power to a plasma chamber through a power line...
6841936 Fast recovery electron multiplier  
An improved electron multiplier bias network that limits the response of the multiplier when the multiplier is faced with very large input signals, but then permits the multiplier to recover...
6459218 Inductively powered lamp unit  
An inductively powered lamp unit 806 is fixed onto a substrate and over a position where a primary inductive loop 803 is spread apart (as at 807). At such sites, a horizontal (or at least parallel...
5909203 Architecture for isolating display grids in a field emission display  
The present invention teaches a field emission display ("FED") architecture for isolating display grids, wherein an FED has a plurality of pixels. Each of the pixels comprise at least two field...
5847515 Field emission display having multiple brightness display modes  
A field emission display includes a display screen and a cathodoluminescent coating disposed on a conductive inner surface of the display screen. An extraction grid is disposed a predetermined...
5644195 Flat panel display drive circuit with switched drive current  
A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED comprises a pixelator is coupled to a display for displaying and projecting the...
5581159 Back-to-back diode current regulator for field emission display  
A circuit for regulating the pixel current in a field emission display so as to enhance pixel-to-pixel uniformity of pixel current. The pixel current flows through a pair of diodes connected...
5576986 Memory device using micro vacuum tube  
A highly reliable memory device with excellent heat resistance that can be used in any environment utilizes a chemical change to define a state transition. The memory device includes a micro vacuum...
5561353 Cathode pulse modulation of RF transmitter tubes  
Beam control pulse modulation in an RF transmitter tube is provided by a solid state switch connected between the cathode power supply and the cathode of the transmitter tube. The beam controlling...
5525868 Display with switched drive current  
A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED includes a pixelator is coupled to a display for displaying and projecting the...
5502354 Direct current energized pulse generator utilizing autogenous cyclical pulsed abnormal glow discharges  
A cold cathode vacuum discharge tube is used in a circuit for generating pulsed autoelectronic emissions which are particularly intense and frequent in the abnormal glow discharge region, and...
5465030 Trigger apparatus for spark gap dischargers  
An improved means for triggering high voltage spark gap devices for current injection and pulse power applications which utilizes the high voltage source itself to trigger the discharge. A switch...
5459480 Architecture for isolating display grid sections in a field emission display  
The present invention teaches a field emission display ("FED") architecture for isolating display grids, wherein an FED has a plurality of pixels. Each of the pixels comprise at least two field...
5444337 Radio frequency amplifying apparatus  
A radio frequency amplifying apparatus including a radio frequency amplifying circuit operative in response to a signal of high frequency wave generated from a source generator includes a switching...
5404081 Field emission device with switch and current source in the emitter circuit  
An integrally formed field emission device and electron emission control circuit wherein electron emission is controlled by a current source semiconductor circuit and a semiconductor switch coupled...
5396151 Circuit for reducing ELF electric fields radiated from CRT devices  
A circuit for reducing extremely low frequency (ELF) electric fields on cathode ray robe (CRT) devices comprises a power supply means, a CRT, a voltage sensing means, an amplification means, and a...
5357172 Current-regulated field emission cathodes for use in a flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage  
In a flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage by respectively gating at least one pair of series coupled MOSFETs to...
5343081 Synapse circuit which utilizes ballistic electron beams in two-dimensional electron gas  
According to the present invention, there is provided a semiconductor synapse circuit comprising a semiconductor having an electrically charged carrier gas which is provided with a plurality of...
5340997 Electrostatically shielded field emission microelectronic device  
A field emission microelectronic device based on field emitter structures and fabrication processes. In one embodiment, the microelectronic device includes an electron source, a collector adjacent...
5332952 Quantum phase interference transistor  
Disclosed is hererin a quantum phase interference transistor comprising: an emitter for emitting electron waves into a vacuum; a gate electrode for controlling the phase difference between a...
5289086 Electron device employing a diamond film electron source  
An electron device including a diamond material electron emitter and an anode, both disposed on a supporting substrate, so as to define an interelectrode region therebetween. Electron transport...
5283500 Flat panel field emission display apparatus  
The disclosed flat panel field emitter display (FPFED) comprises a first impedance that carries all of the current to all of the micropoint emitters of one or more (preferably one, typically fewer...
5278475 Cathodoluminescent display apparatus and method for realization using diamond crystallites  
Cathodoluminescent display apparatus employing an electron source including a plurality of diamond crystallites. Image display apparatus employing an array of picture elements, each picture element...
5225743 High voltage switch  
A switch includes a housing forming a cavity, a first electrode, and a second electrode. The first electrode has an inner surface having a generally circular cross-section perpendicular to an axis...
5206565 High-power low-voltage tetrode having a full walled matrix cathode and a control grid spacing of less than 1 mm  
In a controllable high-power electron tube in the form of a tetrode, the anode direct voltage is reduced to less than 10 kV with an anode efficiency of greater than 80%. The tube includes coaxially...
5196767 Spatial light modulator assembly  
The disclosed optical signal processor includes a matrix-addressable field emitter array for supplying a controlled electron emission to a two-dimensional signal processor element that may be...
5162704 Field emission cathode  
A field emission cathode capable of permitting a voltage required for starting emission of electrons from the emitters to be decreased and the emission to be rendered uniform. The field emission...
5155420 Switching circuits employing field emission devices  
A differential amplifier current steering circuit wherein the active circuit elements are realized as field emission devices (FEDs) which provide for an extended range of operation to include...
5153483 Display device  
A display device capable of exhibiting sufficient luminescence using FECs as a plane electron source. The display device includes a substrate section or a cathode substrate and a display substrate...
5150018 Gas discharge lamp with grid and control circuits therefor  
The combination of a fluorescent lamp with a grid between its electrodes and control equipment for operating the lamp in an on condition and an off condition by the application of pulses to the grid.
5138237 Field emission electron device employing a modulatable diamond semiconductor emitter  
A field emission device having a diamond semiconductor electron emitter with an exposed surface exhibiting a low/negative electron affinity which is operably controlled by modulation of a junction...
5012153 Split collector vacuum field effect transistor  
A vacuum FET is designed to perform higher level functions such as logic AND, EXCLUSIVE OR (NOR), demultiplexing, or frequency multiplication with a single device. These higher level functions are...
4785254 Pulsed particle beam vacuum-to-air interface  
A vacuum-to-air interface (10) is provided for a high-powered, pulsed particle beam accelerator. The interface comprises a pneumatic high speed gate valve (18), from which extends a vacuum-tight...
4633135 Starting aid for high pressure sodium vapor lamp  
A high pressure sodium vapor lamp comprising an alumina arc tube within an outer glass envelope is provided with a capacitive starting aid in the interenvelope space. The aid comprises a stiff wire...
4575656 Starting aid for non-linear discharge lamps and method of making same  
A discharge lamp of non-linear configuration employs a solid wire, internal starting aid and a mount which includes a third lead-in wire whereby the starting aid can be electrically connected into...
4521718 Beam mode lamp with voltage modifying electrode  
A beam mode lamp has two discharge electrodes which alternately function as anode and cathode. One or more modifying electrodes are located between the discharge electrodes. Each modifying...
4488091 High intensity discharge lamp  
A high intensity discharge lamp operable from an AC potential source includes an arc discharge tube having a pair of oppositely disposed main electrodes therein and an associated external starting...
4442383 Plasma switch  
Apparatus for controlling the flow of high energy electrical pulses to a load using a switch having a plasma cathode which has rapid start up capability and requires no heater power.
4162432 Repetitively pumped electron beam device  
Apparatus for producing fast, repetitive pulses of controllable length of an electron beam by phased energy storage in a transmission line of length matched to the number of pulses and specific...
4059784 Electron-beam converter  
The electron-beam converter comprises at least one of each of the following components: a cathode, an anode and, accelerating and control electrodes. The anode has a surface orthogonal with respect...
3881147 Method for protecting thyristors of a converter and system therefor  
In order to prevent the damage of thyristors in a converter such as an inverter or chopper due to deviations of their characteristics, margin angles of commutation in respective arms of the...
3881131 GAS DISCHARGE DISPLAY PANEL SYSTEM WITH PROBE FOR IGNITING AND EXTINGUISHING CELLS  
Apparatus including an external voltageless or grounded probe for selectively writing and erasing information on a gas discharge plasma display panel matrix. The plasma panel cells contain an...
3733541 RECTIFIER OPERABLE FROM DUAL INPUT VOLTAGES FOR USE WITH BALLASTED DISCHARGE LAMPS  
A dual-voltage-input, three-terminal-output, rectifier for use with a two-transistor, air-core transformer feedback inverter for supplying high frequency to ballasted discharge lamps. Four diodes...
3659148 LAMP MODULATOR  
An electronic apparatus for generating a visual indication of the presence and magnitude of a signal. The apparatus includes a first amplifying transistor which amplifies an alternating electrical...
3549945 STROBE LIGHT  
3543075 THREE-ELECTRODE SPARK GAP DEVICE FOR SWITCHING HIGH CURRENT INTENSITIES UNDER HIGH VOLTAGE  
3327166 Thyratron with auxiliary electrode  
3263121 High current discharge tubes  
2919382 Control circuit  
Matches 1 - 50 out of 52 1 2 >