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7567417 |
Automatically quenching surge arrester arrangement and use of such a surge arrester arrangement
The invention relates to an automatically quenching surge arrester arrangement with a surge arrester, which, on exceeding a given first voltage, transforms from a non-conducting into a conducting...
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7558041 |
Overvoltage protection device with dual contact surface thermal disconnector
A device ( 1 ) for protecting an electrical installation ( 2 ) from overvoltages, including at least one protection component ( 3 ), and disconnection element ( 4 ) capable of ensuring the...
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7525409 |
Method of manufacturing a varistor
A varistor including a varistor body with two parallel end faces made of a material that contains one or more metal oxides, and at least one electrode made of an electrically conductive electrode...
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7508295 |
Protection circuit
An electric device generates a predetermined amount of heat in the event of a malfunction. The electric device is protected from overheating in that it is arranged, with a fuse in a circuit, such...
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7505241 |
Transient voltage surge suppression device
An integrated fuse device ( 1 ) includes a varistor stack ( 11 ), a thermal fuse ( 12 ), and a current fuse ( 13 ) within an enclosure ( 2 ) having device terminals ( 3 ). The varistor stack ( 11 )...
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7498913 |
Thermal trip device and circuit breaker using the same
A thermal trip device in which a bimetal ( 2 ) is heated by overcurrent and performs trip operation of a circuit by curvature of the heated bimetal ( 2 ), wherein at least one part of the surface...
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7483248 |
Method and apparatus for detecting current changes in integrated circuits
One embodiment of the present invention provides a system that detects changes in power-supply current within an integrated circuit (IC) chip. During operation, the system monitors an induced...
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7477503 |
Circuit protection device
A circuit protection device including a conductor arm releasably connected between a voltage sensitive device and a circuit to be protected. The connector arm is biased to move in a direction...
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7466530 |
Surge arrester
A surge arrester includes an outer electrode and an other electrode. An electrically conductive contact element is spaced apart from the outer electrode by an air gap. The electrically conductive...
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7463463 |
Motor controller and motor temperature estimation method for the same
A motor controller includes: an estimated temperature calculating section that calculates and stores an estimated temperature of a motor, and a control section that can perform a drive control of...
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7369387 |
Apparatus and method for temperature-dependent transient blocking
An apparatus and method for temperature-dependent transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least...
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7333710 |
Display including a light source for illuminating input/output terminals
A display includes a casing, a terminal module, and a light source. The terminal module is mounted on an exterior of the casing, and includes a terminal unit. The light source is mounted on the...
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7272885 |
Method of manufacturing surge arrestor
The present invention relates to a method of manufacturing surge arrestors, the method including stacking varistors; and forming a coating of composite material on the stack. Between these steps,...
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7120001 |
Surge voltage protector for use in power transmission networks
The invention relates to a surge voltage protector ( 1 ) which comprises a discharge current path with at least one varistor block ( 4 a, 4 b, 4 c ). In order to prevent the varistor blocks ( 4...
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6980647 |
Primary telephone line protector with failsafe
Disclosed is a module ( 10 ) having pins ( 16-24 ) connected to respective conductor tower strips ( 46, 48, 50, 52 ). Pairs ( 46, 50 and 48, 52 ) of the conductor tower strips are spring biased...
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6831822 |
Interference suppressor
A suppression device for an electronic appliance having a plug-in device which has at least one plug-in element and is designed for attachment to a housing of the electronic appliance, with a...
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6809917 |
Safety device monitoring heat in electric connection installations
A safety device for monitoring heat in electrical installations includes a first connecting element in thermal relationship with an electrical connection to be monitored, a second element designed...
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6807041 |
Electronic triggering for heating elements
A heating element and a process for conducting the operating heat of a semiconductor switch to a heating cell which is triggered by the semiconductor switch via first and second heat and current...
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6735066 |
Protective device for an electric consumer
The invention relates to a protective device for an electric consumer. A residual-current circuit-breaker is located in an electrical supply line between a mains connection and a switch device of...
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6721155 |
Broadband surge protector with stub DC injection
A surge protector includes a coaxial through-section having a through inner conductor and a through outer conductor, a stub having a stub inner conductor, a stub outer conductor, a first end and a...
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6678138 |
Environmentally insensitive surge suppressor apparatus and method
A surge suppressor conducts heat from a surge protection component (SSC) through a heat conductive element, such as a copper pad, on a printed circuit board, to at least one thermal fuse to cause...
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6655012 |
Fabrication method of surge protector device and the device fabricated by the method
In the fabrication of a surge protector device which utilizes breakdown phenomena of a resistive film, a case which fixes metal bars in it, makes electrical contacts with the metal bars and...
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6501634 |
High voltage transient voltage surge suppression fuse link system
A high voltage transient surge suppression system which provides an improved fusing to greatly reduce or eliminate the chance of secondary combustion during an excess power situation. The invention...
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6459559 |
Thyristor controlled dynamic voltage suppressor for electric power systems
Power system overvoltage protection is primarily accomplished by the application of Metal Oxide Varistors (MOVs). MOV voltage limiting capability may be enhanced by the application of power...
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6430019 |
Circuit protection device
A voltage suppression device for suppressing voltage surges in an electrical circuit, comprised of a voltage sensitive element having a predetermined voltage rating, the voltage sensitive element...
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6424514 |
Surge voltage protector with an external short-circuiting device
In order to give an external short-circuit device of a surge voltage protector a current carrying capacity that is as large as possible, a device is made up of a two-armed flexible short-circuit...
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6411487 |
Coaxial surge protector having thermal fail-safe shunt
A coaxial surge protector includes a housing in which is situated a transmission line in the form of a two-sided printed circuit board. The surge protector includes input and output signal...
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6392861 |
Surge arrester having disconnector housed by mounting bracket and end cap
A surge arrester includes a mounting bracket, a surge arresting element, an electrically conductive connector, and a fault disconnector. The mounting bracket forms a bracket cup. The surge...
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6381115 |
Redundant electric fuses
A redundant electric fuse circuit is provided that includes a plurality of fuses coupled in series and each having a fuse control device operable for generating a current through each fuse...
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6377435 |
Circuit design for data/telephone tip/ring pair surge protection
A circuit for protection of communication lines, including tip and ring lines, each having a protected side and an unprotected side; first and second overcurrent devices connected in series with...
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6327129 |
Multi-stage surge protector with switch-grade fail-short mechanism
A surge protector assembly may be provided with three terminals, a gas discharge tube having a first conductive end and a second conductive end opposite the first conductive end, a pair of metal...
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6252488 |
Metal oxide varistors having thermal protection
A layer of thermal fusible material is placed on one surface of a metal oxide varistor (MOV) to monitor the heating of the MOV due to applied voltage spikes. The thermal fusible material is part of...
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6211770 |
Metal oxide varistor module
A metal oxide varistor module, and variations thereof for use in surge protectors and the like combining internally a thermally activated disconnect means and an excessive current disconnect means,...
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6204746 |
Thermal overload mechanism
A thermal overload mechanism for providing protection to tip and ring conductors in a telecommunications system in the event of a power cross occurrence of telephone lines with power lines. The...
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6201679 |
Integrated electrical overload protection device and method of formation
An integrated electrical overload protection device and method of formation which functions as a thermal fuse. The device is integrated directly on the underlying structural or foundational...
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6188559 |
Line-protection device with integrated cutoff
The device comprises a three-pole lightning arrester, switch means having conductive blades, trigger means having a trigger fuse piece which is thermally connected to the lightning arrester, and...
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6160692 |
Microprocessor detection of transient voltage and abnormal line voltage
A method for determining the extent of a transient's ability to cause MOV over heating and subsequent explosion by microprocessor analysis of an AC voltage input waveform with respect to a stored...
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6122157 |
Apparatus and method for surge protecting an electrical load connected to an AC power distribution system
An AC power distribution system employs a method (900) and apparatus (400) for surge protecting an electrical load connected thereto. The apparatus is coupleable to at least three conductors of the...
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6067216 |
Safeguard feature in a circuit arrangement for protecting an electrical component from an undesirable electrical potential
A safeguard feature prevents supply of voltage to an electrical device in the event a protective element is no longer reliably connected in a circuit arrangement for protecting a susceptible...
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6055147 |
Apparatus for providing independent over-current protection to a plurality of electrical devices and transient-voltage suppression system employing the apparatus
An apparatus for providing independent over-current protection to a plurality of electrical devices and a transient-voltage suppression system employing the apparatus. In one embodiment, the...
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6043966 |
Printed circuit board assembly having an integrated fusible link
A printed circuit board assembly comprising a printed circuit board having a plurality of conductive traces deposited on a surface thereof to define a plurality of electrical circuit geometries. A...
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6028759 |
Electrical apparatus, in particular a surge arrestor, having an apparatus for indicating a fault current
The electrical apparatus, which is designed in particular as a surge arrestor (3), has a dielectric housing (8) which can be loaded with high voltage as well as an apparatus for optical indication...
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5982597 |
Shorting fusable metal oxide varistor
A fuse assembly comprising a fuse element and a fuse cavity are formed integrally with the body of a Metal Oxide Varistor (MOV). Melting of the fuse element forms fused material which flows into...
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5975945 |
All-purpose network interface devices using conventional plug-in protectors
A network interface device (NID) provides an electrical interface between a cable and a local network (e.g., a number of telephones) of a telecommunications system. According to one embodiment of...
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5952910 |
Isolator device for arrester
A device for connecting, and then isolating and disconnecting an arrester includes a non-conductive housing with two electrical terminals. The housing has opposite ends separated by an internal...
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5936821 |
Overvoltage protection plug with fail-safe device having optional visual fail-fail signal indicator
An overvoltage protection plug is provided, including at least one voltage-limiting component with an associated fuse element and a fail-safe device (6). The fuse element trips the fail-safe device...
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5910877 |
Line protector for a communication circuit
A novel current-limiting line protector for a communications circuit is disclosed, and includes a first and second incoming conductive member, a one piece roll-formed conductive member conductively...
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5909351 |
2-element gas tube thermal overload/backup gap
A backup gap type over-voltage protector and thermal protector for a two element gas discharge tube. The gas discharge tube is mounted with its electrodes between opposing fingers of a clip of...
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5844761 |
Device for circuit board power surge protection such as protection of telecommunication line cards from lightning and power cross conditions
A device for line card lightning and power fault protection includes a heat generating fusible resistive element connected to two electrical terminals using a controlled-melting temperature solder....
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5844785 |
Protector device with isolated ground connector
Disclosed is a protector device designed for insertion in connecting blocks. The device includes a ground connector which has a detent on one end for receiving a ground bar from the connecting...
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