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6600642 |
Method and apparatus for lightning suppression in a telecommunication printed circuit board
A method for lightning protection in a printed circuit board includes providing a printed circuit board having a plurality of conductors for connecting to a plurality of telecommunications lines,...
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6580591 |
Switched electrostatic discharge ring for integrated circuits with multiple power inputs
An electrostatic discharge (ESD) switch circuit for an integrated circuit (IC) with multiple power inputs for improving pin-to-power isolation of the IC. The IC includes a plurality of positive...
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6560087 |
Electronic signal filter with surge protection mechanism
An electronic signal filter is provided that includes a metal housing which has been adapted to be electrically grounded, and a circuit board positioned within the housing. The circuit board...
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6556411 |
Purge protection cartridge with three-way attachment clip
A surge protection cartridge is disclosed which is compact, allows for surge protection devices to be inserted and removed by hand, is rugged, is easy to use and is economical. The cartridge...
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6545850 |
Backplane power landing system
A backplane power landing system having a backplane to which is attached extruded metal mounts on which are mounted compact power filter modules. The mounts are adapted to be conductively sealed,...
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6529357 |
Coaxial overvoltage protector with improved inner conductor of the &lgr /4 short-circuit line
A coaxial overvoltage protector, includes a coaxial transmission line having an inner conductor and an outer conductor, and a λ/4 short-circuit line having an inner conductor radially branching...
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6510034 |
Spark gap device having multiple nodes
The present invention provides an over-voltage surge protection device comprising a printed circuit board having a signal carrying conductive member having a plurality of nodes positioned...
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6507654 |
Line interface battery feed arrangements with PTC resistors
A telephone line interface circuit is disclosed that functions with use of PTC resistors so that temperature increases within the battery feed resistors is minimized. Utilizing current and voltage...
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6492894 |
Coaxial fuse and protector
A protective device for excess current utilizes a fuse that incorporates a printed circuit board. The printed circuit board has a trace on one side which is of a desired width, length, and...
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6493201 |
Spark gap retrofit module for surge arrester
A surge arrester having electrical connections to a source of power and to electrical ground is retrofitted with a spark gap assembly to improve performance of the surge arrester. This is...
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6483686 |
Circuit for indicating abnormality of three-mode surge absorber of public electric power and a multiple-end fuse
A circuit for indicating abnormality of a three-mode surge absorber of a public electric power is disclosed. The circuit is serially connected between the input end and output end of a public...
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6456479 |
Keycode connection arrangement between a processing module and a terminal block
A connection assembly for facilitating connection between a terminal block and a module containing protective relay circuitry. The assembly includes a keycode plate molded to align with and fit...
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6456478 |
Broad-band EMP surge diverter
A broad-band EMP surge diverter in a coaxial line with a waveguide ( 20 ) placed in an outer conductor ( 10 ) and electrically connected via a short-circuit link ( 24 ) to the inner conductor ( 30...
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6452773 |
Broadband shorted stub surge protector
A surge protector comprises a coaxial through-section having a first inner conductor, a first outer conductor, and a first dielectric disposed between the first inner conductor and the first outer...
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6450836 |
Transient suppression F-connector
A spark transfer seizure or transient suppression component is designed into the female connector or F-connector employed to connect a coaxial cable to electrical components within a cable splitter...
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6433672 |
Combined power and communication delivery system and kit for installation at or beyond the demarcation point
A combined power and communication delivery system for installation at or beyond the demarcation point in a residential or business building is described. The system has a power input module and a...
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6433988 |
Method and apparatus for protection switching
An apparatus comprises a protection group. The protection group includes components, a signal bus, including segments and connectors, that couple the components. The components also include a...
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6433979 |
Electrostatic discharge protection device using semiconductor controlled rectifier
A novel electrostatic discharge (ESD) protection device used for mixed voltage application is disclosed. Semiconductor-controlled rectifier (SCR) is utilized as the basic protection device for ESD...
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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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6421219 |
Balanced wire connector
A weatherproof protector module for telecommunication circuits has wire insertion points that are arranged in lateral, forward and rearward symmetry about a single stuffer screw. The module...
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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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6411485 |
Electrostatic discharge protection circuit for multi-voltage power supply circuit
An ESD (electrostatic discharge) protection circuit is provided, which features a low triggering voltage and a low leakage current and is suitable for use with a multi-voltage power supply circuit...
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6407901 |
Semiconductor device providing overvoltage and overcurrent protection for a line
An integrated circuit ( 40 ) providing overvoltage and overcurrent protection to a line ( 16 ). The integrated circuit ( 40 ) is constructed to provide overvoltage protection when a voltage...
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6385030 |
Reduced signal loss surge protection circuit
A surge protection circuit is coupled to the wires that transport digital signals between a local unit, such as an ONU, and a remote unit, such as a NID. The surge protection circuit includes a...
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6385027 |
Noise protection device
A circuit for protecting a microprocessor in a controller for controlling a coin validator from noise includes a noise detector and the circuit is configured to temporarily halt the microprocessor...
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6377434 |
Individual secondary protection device
A secondary protection device for protecting a circuit. The device includes a first positive temperature coefficient (PTC) resistor, a bidirectional zener diode and a second PTC resistor connected...
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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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6370000 |
Primary telephone line protector with fail safe
A telephone line protection element constructed of three lead frames having contact fingers for holding therebetween a semiconductor cell providing overvoltage protection between the telephone line...
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6359766 |
Apparatus for proper grounding of twisted pair cabling
An apparatus for grounding network cabling prior to insertion in a network device. The apparatus includes a cable connector receptor for receiving a standardized network cable connector. The...
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6359765 |
Fused terminal for use with a network protector
A fused terminal for use with a network protector, the disconnect terminal including an integral fuse and being located outside of the network protector housing and not substantially increasing the...
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6356422 |
Circuit breaker communication and control system
A circuit breaker system 10 (FIG. 1 ) using electronic trip units 35 is disclosed. The electronic trip units 35 are coupled to a communications bus 30 whereby the electronic trip units 35...
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6324044 |
Driver for controller area network
A controlled area network (CAN) driver provides improved symmetry between its differential output signals CAN-H and CAN-L, and provides protection for its low voltage devices from voltage...
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6304013 |
Line termination network assembly for an electric motor
An electric motor to be used with a termination network that is integral with the motor and connected to the motor's supply motor lines for reducing voltage between a motor terminal and a...
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6294740 |
Spring clip for a gas tube surge arrestor
A one-piece spring clip is provided for retaining a gas tube element used in a surge arrestor having a cap with an interior portion. The spring clip includes a generally flat disk having a...
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6292344 |
Floating ground isolator for a communications cable locating system
A floating ground isolator for shunting only selected damaging and/or annoying induced energy from a communications cable sheath to ground, thereby facilitating long range cable location using...
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6288884 |
MOS buffer immun to ESD damage
A buffer is integrated with an ESD protection circuit onto a semiconductor substrate. The ESD protection circuit is triggered by means of a MOS-like device having a first spreading resistance...
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6266224 |
Broadband coaxial overvoltage protector
A broadband coaxial overvoltage protector includes a short-circuit line segment connected in parallel with a coaxial line section, a transforming coaxial line section with a length <λ/4, with...
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6266223 |
Line protector for a communications circuit
A line protector is provided which includes positive temperature coefficient resistors in the circuit which are thermally coupled to voltage clamping devices which require protection from failures...
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6259590 |
Grounding device for preventing lorentz force in voltage surge protection
A grounding device connected to telecommunications equipment for providing protection against high voltage surges. The grounding device includes an electronic module clip having first and second...
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6259589 |
Protection apparatus applied to a telephone line
A protection device applied to a telephone line comprises at least an overload detecting device, a high temperature detecting circuit, and an enforcing on-hook means. When an abnormal over voltage...
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6249415 |
Surge protector and method for preventing damage from line surges
A surge protector for an electrical line is disclosed. The surge protector includes a pair of conductive pins respectively connectable to electrical lines. A first pin is soldered to a lead from a...
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6249416 |
Grounding device for voltage surge protection of telecommunications equipment
A grounding device connected to telecommunications equipment for providing protection against high voltage surges. The grounding device includes an electronic module clip having first and second...
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6246560 |
Peripheral device isolator
A peripheral device isolator (32) is provided which consists of an insulating material (33) having a first conductive area (34) on a top surface and a second conductive area (35) on a bottom...
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6243250 |
Electrical connector
Electrical connector (8) having connector terminals (12) at a front thereof to which external electrical conductors may be secured to make electrical connections between the conductors and the...
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6243247 |
Stripline transient protection device
Apparatus for protecting electronic components and equipment and method of manufacturing the apparatus. A transient protection device capable of mounting onto a circuit board. The transient...
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6236551 |
Surge suppressor device
An apparatus and method for protecting hardware devices using a spiral inductor. The surge suppressor protects hardware devices from electric surges by isolating the radio frequency from an inner...
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6222717 |
Multi-chamber telecommunications terminal block with linking module
A terminal block for terminating one or more exchange wires to one or more service wires has a housing including a plurality of separate chambers each of which are accessible to a service wire...
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6215638 |
Overload protection assembly
The input resistance of an electrical protective device connected to protect telecommunication transmission lines and associated telecommunication equipment is reduced by connecting a resistor in...
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6208494 |
Semiconductor integrated circuit device including electrostatic protection circuit accommodating drive by plurality of power supplies and effectively removing various types of surge
According to a structure in which each transistor of an output buffer transistor group of a gate array structure is electrically isolated, each body potential is set independent Also, a...
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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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