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Document Title |
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6487060 |
Oxide protection for a booster circuit
A protection system that protects a booster circuit used to boost operating signals in a memory device. The system includes a protection circuit for protecting an output transistor of the booster...
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6487058 |
ESD shunt
A method for placing several electrical portions of an electrical component at substantially the same electrical potential includes identifying electrical conductors which lead to a first...
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6484223 |
Transmitting device and bus system for data transfer
The invention relates to a transmitting device and a bus system for the serial data transfer of binary data between at least two communication stations, which are coupled to one another via an...
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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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6483683 |
Overvoltage protection
A differential amplifier, of such as a comparator or operational amplifier, has two base input terminals. The base-emitter junctions in the two input transistors are protected by corresponding...
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6477023 |
Electrostatic discharge protection apparatus
An electrostatic discharge protection apparatus. A drain region is formed under a pad. A gate is formed at a periphery of the pad, while a source region is formed at a periphery of the gate....
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6473283 |
Voltage protection circuit for multi-drop bus of an automated coin vending machine
A voltage protective circuit for an electronic device comprises a metal oxide varistor for eliminating spikes above a first level, and a Zener diode and a transistor connected in series through a...
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6469884 |
Internal protection circuit and method for on chip programmable poly fuses
An integrated circuit ( 10 ) having at least one programmable fuse (F 1 ) and ESD circuitry (MN 3 , MN 1 ) preventing the fuse (F 1 ) from being unintentionally blown when a voltage transient...
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6469351 |
Electrostatic breakdown prevention circuit for semiconductor device
A Vss-side off transistor is often used in an electrostatic breakdown prevention circuit having an NMOS transistor. In such a circuit, the state of connection of the transistor ensures that...
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6466425 |
Insulating arrester capable of providing a voltage distribution that is substantially symmetrical around the center of the overall height of the arrester
Provided is an arrester excellent in a limit voltage characteristics which can withstand a contamination phenomenon of a porcelain bushing surface, and a surge absorption. Metal plates each having...
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6466423 |
Electrostatic discharge protection device for mixed voltage application
A novel electrostatic discharge (ESD) protection device used for mixed voltage application is disclosed. A primary ESD device and a MOS transistor stack are respectively coupled to the input/output...
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6459555 |
Integrated circuit comprising analog and digital sub-circuits with improved over-voltage protection and reduced substrate-noise coupling
An integrated circuit comprising a substrate with analog and digital sub-circuits provided with different supply terminals, including V dd and V ss supply terminals for the analog part and a V dd...
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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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6456474 |
Semiconductor integrated circuit
To improve the reliability by properly operating an overvoltage protection circuit. In case of a semiconductor integrated circuit of the present invention, the source electrode 52 s of an nMOS...
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6456473 |
Input overload protection for multiple input controller
A current loop input overload protection system for a controller having multiple inputs includes zener diodes that limit the maximum voltage that can be applied to any input. If an electrical short...
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6452768 |
Circuit arrangement for protecting integrated circuits against electrostatic discharges
A circuit arrangement for the protection of integrated circuits against electrostatic discharges is described, the circuit arrangement having a first MOS protective transistor, a second MOS...
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6442011 |
Flux concentration adjustment mechanism and method for hall effect sensors and circuit breaker using same
A Hall effect sensor is transported to and away from a conductor to vary the sensitivity range of the sensor to current flow in the conductor. The device comprises a bracket supported on the...
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6442008 |
Low leakage clamp for E.S.D. protection
An improved MOS IC is disclosed having a low standby current ESD voltage clamp for the power and ground pads. The ESD voltage clamp uses the vertical PNP transistors inherently available in CMOS...
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6437961 |
Electrostatic discharge circuit having power-up and power-down protection
The reliability and operability of semiconductor devices is improved using a circuit arrangement that protects the device against malfunction and harm during operation. According to an example...
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6437958 |
Gate oxide protection method
An output driver prevents gate oxide breakdown and reverse charge leakage from a bus to the internal power supply. When the voltage on the bus exceeds the internal supply voltage or when the driver...
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6437956 |
Circuit for bipolar transistor stress and qualification
A stress-driver circuit for providing a constant voltage (V ce ) and a constant current (I=V in /R) to a bipolar transistor under test. The circuit includes a power source, an op-amp, a FET, and...
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6437407 |
Charged device model electrostatic discharge protection for integrated circuits
A charged-device model (CDM) electrostatic discharge (ESD) protection for complementary metal oxide semiconductor (CMOS) integrated circuits such as input/output (I/O) circuits. A CDM ESD clamp...
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6433985 |
ESD network with capacitor blocking element
An ESD protection network is described which prevents high voltage oxide stress. The network consists of a filter network (such as a blocking capacitor) and diode protection elements. The filter...
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6433984 |
Line filter assembly for minimizing unwanted emissions
A line filter assembly for diverting unwanted emissions generated on a power cord between a power sub-system source and a power grid to ground is disclosed. The line filter assembly includes a PC...
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6433983 |
High performance output buffer with ESD protection
An output buffer with built-in ESD protection is disclosed. The built-in ESD protection is preferably formed using transistors from the sea-of-transistors or sea-of-gates region of the integrated...
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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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6430016 |
Setpoint silicon controlled rectifier (SCR) electrostatic discharge (ESD) core clamp
An adjustable setpoint ESD core clamp for ESD protection circuits is disclosed. The core clamp includes an SCR whose P+N trigger junction is referenced to a diode stack. The SCR is non-avalanche...
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6426855 |
ESD protection circuit for different power supplies
A voltage clamping circuit that protects integrated circuits having multiple separate power supply voltage terminals from damage when an ESD event causes excessive differential voltages between the...
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6424510 |
ESD structure for IC with over-voltage capability at pad in steady-state
The present invention provides an ESD structure that can tolerate voltages at the I/O pin, or pad, higher than the voltage allowed for such technology. More particularly, the present invention...
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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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6414831 |
Low leakage electrostatic discharge protection system
A protection system employing high voltage input diodes and low voltage supply clamp to prevent input diode leakage increasing due to reverse stress during electrostatic discharge events.
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6414341 |
Input/output protective device
The present invention provides an excellent input/output protective device which has a withstand voltage of 200 V or more in device simulation tests according to the EOS/ESD standard. There is...
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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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6411481 |
Method and device for suppressing over-voltages
A method and a device for reducing overvoltages is described. A switch and a load are connected in series between a first and a second terminal of a voltage source. The switch is triggered in such...
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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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6404179 |
Noise eliminating apparatus of high-frequency transmission system
A primary winding of a first insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an input terminal, and windings of...
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6400547 |
Method of monitoring state parameters in a switching device, and associated device
A method of monitoring state parameters in a switching device records and evaluates sensor signals of sensors which are susceptible to an interference caused by external electrical or magnetic...
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6400546 |
I/O pad voltage protection circuit and method
An I/O pad voltage protection circuit and method tracks a bias voltage of cascaded stages in order to avoid overvoltage stress in I/O transistors. An overshoot protection circuit controls overshoot...
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6400542 |
ESD protection circuit for different power supplies
A voltage clamping circuit that protects integrated circuits having multiple separate power supply voltage terminals from damage when an ESD event causes excessive differential voltages between the...
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6400258 |
Electric arc monitoring systems
Systems of monitoring electric arcs substantially eliminate alternating current fundamentals and harmonics from monitored arc signatures. Such systems phase shift, delay or otherwise store a...
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6396674 |
System and method for monitoring the operation of a power converter
A fault detection circuit and method for monitoring a power converter system to identify faults. The detection circuit includes two comparator circuits each having one input connected to the dc bus...
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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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6392860 |
Electrostatic discharge protection circuit with gate-modulated field-oxide device
An ESD (electrostatic discharge) protection circuit employs a field oxide region between the drain region and the source region to break a surface channel between the drain region and the source...
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6392855 |
Floating body charge monitor circuit for partially depleted SOI CMOS technology
Methods and apparatus are provided for monitoring excess body charges in partially depleted SOI CMOS devices. An apparatus for floating body charge monitoring in partially depleted...
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6388857 |
Semiconductor circuit device with improved surge resistance
Inter power supply surge voltage transmitting diode element is formed by a buried layer formed in a semiconductor substrate, a well region formed on the buried layer with its bottom portion being...
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6388856 |
Polymer fuse and filter apparatus
The present invention relates to a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse is comprised of an electrical conductor wherein a portion of the conductor is...
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6388852 |
Flicker protection circuit
A power line flicker protection circuit, used to protect electronic equipment, features the following: A transformer (T 1 ), provides power to the DC power supply (FIG. 2 ), and signaling to the...
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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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6385029 |
Total electrical transient eliminator
An apparatus and method for attenuating high frequency transients on AC power lines from damaging sensitive electrical and electronic circuits in an electrical load coupled to the AC power lines is...
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6385028 |
Surge preventing circuit for an insulated gate type transistor
A first Zener diode group, connected between drain and gate terminals of a power MOSFET, causes breakdown in response to a surge voltage applied to the drain terminal. A resistor, provided between...
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