Matches 101 - 150 out of 335 < 1 2 3 4 5 6 7 >
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5509558 Metal oxide resistor, power resistor, and power circuit breaker  
A metal oxide resistor for suppressing variations in resistivity in use in an atmosphere at a high temperature or humidity. Such a metal oxide resistor includes a sintered body in which carbon...
5504470 Resistor trimming process for high voltage surge survival  
Several trim patterns are illustrated which are suited for use in high voltage, surge prone environments. The invention combines a block resistor with a simple scan cut and two or more plunge cuts...
5463367 Method for forming thick film resistors and compositions therefor  
Thick film resistor ink compositions and a method for formulating and processing such inks are provided for producing thick film resistors having highly repeatable and stable resistance...
5455554 Insulating coating  
A composition for an insulating collar of a metal oxide varistor, with the composition being applied as a slurry to a green varistor in an unfired state along its periphery for enhancing the...
5455555 Chip varistor  
A chip varistor formed of a single layer varistor element includes a pair of non-ohmic contact electrodes and a pair of ohmic contact electrodes. The varistor element is a rectangular shape having...
5393597 Overvoltage protection element  
An overvoltage protection element which comprises a fabric comprising insulating threads or strands of predetermined thickness having interstices extending therethrough and non-linear material...
5386086 Composite thermoplastic filler for ballast cans for use with fluorescent lights  
A process for fabrication of a filler for a ballast container used with frescent lighting employs a mixture of a high-density polyethylene in powdered form (derived from recycled milk containers)...
5386335 Surge absorber  
In a surge absorber, capable of suppressing a voltage surge and a current surge together without interrupting a signal transmission, an input electrode and an output electrode are spaced apart on...
5379022 Thermistor device with extended operating range  
A thermistor device includes plural thermistor elements in series, one or more of which is shunted with a varistor so that if such thermistor heats up and drops excessive voltage, the current...
5370458 Monolithic microwave power sensor  
A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate a conversion element formed either on or in the substrate for converting microwave energy into heat,...
5345212 Power surge resistor with palladium and silver composition  
Power surge resistor containing palladium/silver, glass and dopant(s) are described for use in the manufacture of power surge resistor devices employed for power surge protection applications. The...
5341119 Measurement circuit utilizing a low TCR thick film sense resistor  
A measurement circuit utilizing a thick film sense resistor containing palladium and silver in a weight ratio of about 56/44 to about 60/40 and a specific glass frit composition so that the sense...
5296835 Variable resistor and neuro device using the variable resistor for weighting  
A Neuro device is a representation of a nerve cell constituting human brains, eyes and the like, that is, a neuron by an electronic circuit. A circuit of the Neuro device according to the present...
5264819 High energy zinc oxide varistor  
A varistor with a body including an outer perimeter and substantially parallel opposed ends is surrounded on its outer perimeter by a collar formed from a high temperature polymer. Electrodes are...
5262754 Overvoltage protection element  
An overvoltage protection element which comprises a sheet of insulating material of predetermined thickness having openings extending therethrough and non-linear material filling said holes.
5258738 SMD-resistor  
An SMD-resistor includes a ceramic substrate having two main faces, two side faces and two end faces which are intergranular fracture faces, two contact layers provided on two ends of a main face...
5245145 Modular closing resistor  
A modular closing resistor assembly can be added in line with the interrupter assemblies of an extra high voltage circuit breaker and has a relatively short length. The resistor element consists of...
5235309 Resistive current limiter  
The invention relates to a resistive current limiter having at least one conductor of a superconductive high-temperature material, carrying the rated current. The electrically active length of said...
5231369 Resistive current limiter and process for producing it  
A resistive current limiter takes the form of a hollow cylinder and is composed of high-temperature superconducting material. In this connection, the high-temperature superconducting material may...
5229743 High voltage protection resistor  
A protection arrangement for a high voltage tube includes a low inductance disk resistor connected in series with the anode of the tube. When an electrical discharge occurs within the tube, the...
5225111 Voltage non-linear resistor and method of producing the same  
An improved voltage non-linear resistor having a superior voltage-current characteristic property, a superior switching current impulse withstand capability, a superior lightning current impulse...
5189387 Surface mount device with foldback switching overvoltage protection feature  
A nonlinear resistive surface mount device for protecting against electrical overvoltage transients is disclosed which includes a pair of conductive sheets and a foldback switching material...
5184108 Conductive corners for surge survival  
Conductive material is applied to a resistor to provide controlled shunting of current from localized regions of the resistor that would otherwise destructively fail during surge. Various...
5182540 Electrical resistor element and method of manufacturing the same  
A resistor element includes a hollow cylindrical sintered body and a pair of electrodes formed on the upper and lower surfaces of the sintered body. The sintered body contains ferrite as a main...
5128616 DC voltage tester having parallel connected resistive elements in thermal contact with a thermochronic material  
A DC voltage tester having a plurality of resistive elements in thermal contact with a thermochromic material wherein the resistive elements are connected in a parallel configuration.
5119062 Monolithic type varistor  
A monolithic type varistor in which a plurality of inner electrodes are arranged in a sintered body composed of semiconductor ceramics so as to be overlapped with each other while being separated...
5098611 Electrical resistors, electrical resistor paste and method for making the same  
A fixed chip resistor or a thick-film electrical resistor provided in circuit boards and the like and, an electrical resistor obtained by sintering in a non-oxidizing atmosphere, resistance pastes...
5088000 Electronic thermal relay and appropriate thermal element  
An electronic thermal relay is disclosed which can be associated with a multiphase electric load for generating a pre-alarm and/or an order for cutting off the power supply to the load in the case...
5068634 Overvoltage protection device and material  
A material and device for electronic circuitry that provides protection from fast transient over-voltage pulses. The electroded device can additionally be tailored to provide electrostatic bleed....
5062993 Process for fabricating doped zinc oxide microsphere gel  
A new composition and method of making same for a doped zinc oxide microsphere and articles made therefrom for use in an electrical surge arrestor which has increased solid content, uniform grain...
5039971 Voltage non-linear type resistors  
A voltage non-linear resistor, composed mainly of zinc oxide and contains at least bismuth oxide, antimony oxide, and silicon oxide as additives, wherein crystalline phases of bismuth oxide...
5036420 Surge absorber  
A surge absorber utilizes a varistor electrically connected to a surge absorbing element. The varistor voltage and nonlinearity factor are chosen so that the varistor has a preselected...
5008646 Non-linear voltage-dependent resistor  
Non-linear voltage-dependent resistor having a ceramic sintered body based on zinc oxide as a resistance material which is doped with at least one alkaline earth metal, rare earth metal and metal...
4996510 Metal oxide varistors and methods therefor  
A varistor comprises a primary varistor metal oxide, aluminum in an amount of about 1 to about 30 parts per million (ppm), about 0.1 to about 0.5 mole % bismuth, about 0.1 to about 1.5 mole %...
4971739 Method of producing fluorapatite and a moisture sensitive resistor using fluorapatite obtained by the same  
A method of producing fluorapatite wherein predetermined amounts of calcium monohydrogen phosphate, calcium carbonate, and calcium fluoride are weighed, subjected to a mechanochemical action, and...
4964162 Secure television signal encoding and decoding system  
A television signal encoding and decoding system providing a line-spin scrambled video signal with substantially reduced amplitude gaps and line tilt and a digitally-encrypted audio signal that can...
4959262 Zinc oxide varistor structure  
A varistor device comprised of a multi-layer zinc oxide varistor matrix containing metallizations of silver.
4943795 Oxide resistor  
A composite sintered oxide resistor comprising crystal grains of zinc oxide and crystal grains of a zinc oxide compound of other metal or semi-metal element than zinc, and a grain boundary layer...
4940960 Highly densified voltage non-linear resistor and method of manufacturing the same  
In case of manufacturing a voltage non-linear resistor, a sintering process is divided into two completely separate steps, i.e. primary and secondary sinterings. The primary sintering is carried...
4940961 Braking resistor for a high tension electrical network  
A braking resistance having at least one basic element (400) including a ceramic envelope (1) receiving at least one stack of conducting solid disks (11) made of a carbon-based ceramic and having a...
4920328 Material for resistor body and non-linear resistor made thereof  
An average size of ZnO particles which are three dimensionally connected and serve as primary component of a non-linear resistor, is adjusted to be within a range of 5 μm to 10 μm. The non-linear...
4890186 Fault current limiting device  
In the past, a power fuse need be replaced after the current limiting operation and cannot be repeatedly used. To solve this problem, there has been proposed a permanent fuse or the like which uses...
4855708 Voltage non-linear resistor  
A voltage non-linear resistor having a voltage non-linear resistance element consisting mainly of zinc oxides and a high resistance layer including a zinc silicate phase consisting mainly of Zn 2 ...
4796001 Replacement ballast structures in roadway and/or area luminaires  
A low pressure sodium roadway and/or area luminaire is provided. In this structure, the ballast is present in a removable pod which can be removed and replaced solely by hand.
4730179 Voltage non-linear resistor and its manufacture  
A voltage non-linear resistor excellent in varistor voltage characteristics, lightning discharge current withstanding capability and life performance against applied voltage comprises a disc-like...
4725807 Nonlinear voltage resistor  
A nonlinear voltage resistor is formed by sintering a resistor body made from a powder predominantly comprising ZnO. The powder also includes a first element selected from the group of Li and Na...
4719441 Sensor for measuring electrical conductivity  
At least two electrodes (1, 2) each provided with at least one lead (5) are applied in the form of conductor tracks to a substrate. The leads (5) can be made of a material having a lower standard...
4706060 Surface mount varistor  
A varistor having opposed first and second major surfaces. A first electrode is disposed on at least a portion of both the first and second major surfaces, and a second electrode is disposed on at...
4701675 Apparatus for limiting arc discharge current in incandescent lamp  
An arc discharge current occurred in dc-illuminated incandescent lamp can be effectively suppressed with an apparatus comprising first resistance connected in series with an incandescent lamp...
4692289 Method of manufacturing voltage-dependent resistor  
A voltage-dependent resistor having a low operational field strength with a ceramic sintered body on the basis of a polycrystalline alkaline earth metal titanate doped with a small quantity of a...
Matches 101 - 150 out of 335 < 1 2 3 4 5 6 7 >