|
Match
|
Document |
Document Title |
|
|
5896263 |
Output circuit having electronic overload protection activated by voltage drop across output transistor
An output circuit has multi-stage protection circuitry for protecting against different fault current conditions. The protection circuitry operates by detecting voltage changes across the output...
|
|
|
5889644 |
Device and method for electrostatic discharge protection of a circuit device
An circuit device includes a stack of electrostatic discharge protection devices shared between a plurality of contact pads on the device. In addition, each contact pad is coupled to its own...
|
|
|
5886862 |
Cross-referenced electrostatic discharge protection systems and methods for power supplies
An electrostatic discharge protection system provides electrostatic discharge protection for an integrated circuit having a package and a semiconductor device installed within the package. The...
|
|
|
5880917 |
Well resistor for ESD protection of CMOS circuits
A circuit for providing electrostatic discharge (ESD) protection is disclosed. The circuit comprises a pair of CMOS field effect pull up and pull down transistors with reduced resistance source and...
|
|
|
5877930 |
Input and output noise reduction circuit
A circuit for limiting voltage transient excursions on a power supply node is disclosed. The circuit includes a first field effect transistor dispose to provide a capacitance and having source and...
|
|
|
5877534 |
Method of forming electrostatic discharge protection device for integrated circuit
An electrostatic discharge (ESD) device includes a pair of depletion mode MOSFETs connected drain-to-drain in a series path between an input terminal and an output terminal, the gate of each MOSFET...
|
|
|
5875089 |
Input protection circuit device
An input protection circuit device for protecting a device in a semiconductor circuit device when a surge current is applied to a signal input terminal of the semiconductor circuit device is...
|
|
|
5875086 |
Semiconductor integrated circuit device equipped with protective system for directly discharging surge voltage from pad to discharge line
A protective system incorporated in a semiconductor integrated circuit device has a shared discharging line and a plurality of protective circuits each having a diode and a lateral bipolar...
|
|
|
5870268 |
Early trigger of ESD protection device by a current spike generator
A transient switching circuit is provided to generate a voltage signal with fast voltage switching phenomenon during the initial ESD transient. The voltage signal is applied to a current spike...
|
|
|
5864457 |
System and method for controlling current flow in an AC adapter
A surge modification circuit controls surge current flows which may occur when a computer and AC adapter are connected. The surge current flows are controlled using active circuitry since passive...
|
|
|
5862031 |
ESD protection circuit for integrated circuits having a bipolar differential input
An ESD protection circuit allows a certain level of ESD current to flow through a protected circuit, and actuates a bypass path for greater ESD current levels when the sensed current reaches a...
|
|
|
5859758 |
Electro-static discharge protection circuit
An electro-static discharge (ESD) protection circuit for a semiconductor device includes a primary ESD protection circuit including at least two diodes, the primary ESD protection circuit being...
|
|
|
5856904 |
Voltage and current based control and triggering for isolator surge protector
An isolator surge protector (ISP) is provided which blocks DC current and passes AC current and AC and DC fault currents. The ISP includes a main bypass path, including main bypass path switching...
|
|
|
5854730 |
Transient and voltage surge protection system and method for preventing damage to electrical equipment
A voltage surge suppression system for the protection of electronic equipment from damage from voltage surges and voltage transients has at least one metal oxide varistor electrically connected to...
|
|
|
5852541 |
Early trigger of ESD protection device by an oscillation circuit
A transient oscillating circuit is provided to generate a series of current pulses for triggering turn-on of an ESD protection device. As VDD-to-VSS voltage increases rapidly in the initial ESD...
|
|
|
5852540 |
Circuit for protecting the input/output stage of a low voltage integrated circuit device from a failure of the internal voltage supply or a difference in the power-up sequencing of supply voltage levels
A circuit for protecting internal logic circuits of an integrated circuit (IC) device from a failure of internal voltage supply is disclosed. A protection circuit is connected between the internal...
|
|
|
5847916 |
Protector
A protector for use in a telecommunications system to establish an electrical connection between two lines includes a base and at least two line terminals extending from one surface of the base. A...
|
|
|
5847915 |
Static isolator
Static isolator for the DC supply circuit of a load (MO) in the event of a surge, consisting of a dipole intended to be inserted into the power circuit of the load and comprising means for...
|
|
|
5847914 |
Electrostatic discharge protection device
An electrostatic discharge protection device is disclosed for use with a semiconductor chip package where the electrostatic discharge protection device establishes electrical connection between...
|
|
|
5844764 |
Residential protection service center
Residential protection service center apparatus comprising an AC power meter, AC power line surge suppression, telephone line overvoltage protection and coaxial transmission line overvoltage...
|
|
|
5844763 |
Electrical outlet assembly having field replaceable transient voltage surge suppression module
An electrical power outlet assembly having a housing supporting a plurality of electrical outlets each including an electrical plug receptacle. One of the outlets defines a pocket containing a...
|
|
|
5844762 |
Electronic circuit device having a function of inhibiting resonance in power wiring
An electronic circuit device having a power wiring resonance inhibition function includes a plurality of electronic circuit elements, and a wiring board having the electronic circuit elements...
|
|
|
5844262 |
Semiconductor device for reducing effects of noise on an internal circuit
Semiconductor device according to the present invention includes package frame, bonding wire, pad, first internal power supply line, second internal power supply line, internal circuit, stabilize...
|
|
|
5841620 |
Transmission bandwidth extender/category 5 protector
A surge protector module for protecting telecommunications equipment from power and transient surges includes a two-piece interfitting housing, a printed circuit board, a plurality of circuit surge...
|
|
|
5841619 |
Interface circuit for use in a semiconductor integrated circuit
To an input terminal is connected one end of the source-to-drain current path of an NMOS the gate of which is connected to Vcc. The other end of the current path of the NMOS is connected by a...
|
|
|
5838527 |
Electrical surge protection apparatus
A surge protection apparatus (20) has a first quadrature coupler (22) with a first input (24) coupled to an electrical ground (26), and a second input (28) connected to an input signal. A second...
|
|
|
5838526 |
Load actuation circuit with a surge protecting function
In a load actuation circuit of an emitter-follower circuit arrangement, a surge detection circuit detects a power surge voltage superposed on a power voltage of a power line. A feed circuit...
|
|
|
5835328 |
Breakdown-tiggered transient discharge circuit
An arrangement for preventing damage to a circuit of an integrated circuit due to the occurrence of voltage transients introduced externally to the integrated circuit. Generally, the arrangement...
|
|
|
5835327 |
ESD protection continuous monitoring device
An electro-static discharge (ESD) protection continuous monitoring device includes two or more resistance comparison circuits which compare the grounding resistances to earth ground of two or more...
|
|
|
5835326 |
Electrical cord with integral surge protection circuitry
A surge protector circuit is installed in the middle of a standard cordset so that an OEM cordset can also provide surge protection. Telephone line surge protection (e.g., for fax and modem) and...
|
|
|
5825603 |
Method and apparatus for providing electrostatic discharge protection for high voltage inputs
An arrangement for preventing damage to a circuit of an integrated circuit due to the occurrence of voltage transients introduced externally to the integrated circuit. According to one embodiment,...
|
|
|
5825601 |
Power supply ESD protection circuit
An electrostatic discharge (ESD) protection circuit includes first and second supply terminals, a current source, a shunt transistor, an inverter and a voltage level shifting device. The shunt...
|
|
|
5825600 |
Fast turn-on silicon controlled rectifier (SCR) for electrostatic discharge (ESD) protection
An apparatus for protecting an integrated circuit against damage from electrostatic discharge (ESD) includes an ESD bus that is connected to multiple input pads through a respective diode. The ESD...
|
|
|
5822166 |
DC power bus voltage transient suppression circuit
A transient suppression circuit suppresses transients on a dc power bus, extending between a power supply and a load which carries a first voltage having a nominal value, by charging a capacitor to...
|
|
|
5821797 |
Protection circuit for semiconductor devices
A protection circuit (1) for input comprises two transistors (11, 12) connected in series between a first voltage supply (V cc ) and a second voltage supply (GND), and an intermediate junction...
|
|
|
5818672 |
Ground loop current suppressor
Apparatus and process are provided for suppressing interference caused by ground loop currents associated with two A.C. power-line operated electrical/electronic equipment units, such as an audio...
|
|
|
5815360 |
Integrated circuit input/output ESD protection circuit with gate voltage regulation and parasitic zener and junction diode
An integrated circuit structure with input/output gate voltage regulation and parasitic zener and junction diodes for protection against damage resulting from electrostatic discharge (ESD) events....
|
|
|
5815359 |
Semiconductor device providing overvoltage protection against electrical surges of positive and negative polarities, such as caused by lightning
An overvoltage protection device, particularly for protecting equipment against electrical surges caused by lightning, wherein the protective device includes a first protection element for...
|
|
|
5815356 |
Integrated transient suppressor
Transient protection apparatus and circuitry that allows a circuit being protected to operate during the transient and after the transient. Two types are included, one being a blocking type for use...
|
|
|
5815355 |
Modulation compensated clamp circuit
A radio frequency identification (RFID) tag includes a tank circuit for receiving a power signal transmitted on a radio frequency (RF) carrier by a remote interrogator unit. Information is conveyed...
|
|
|
5815354 |
Receiver input voltage protection circuit
An off-chip receiver circuit for interfacing an integrated circuit of a 2.5 Volt CMOS technology to a 3.3 Volt LVTTL bus. The off-chip receiver includes protection circuitry for preventing...
|
|
|
5815353 |
Overvoltage protector
An overvoltage arrester (8) consists of a plurality of limiter elements (15) connected in series. Parallel to this series of limiter elements (15) is a series of controlled switches (18). The two...
|
|
|
5815352 |
Arc fault detector with limiting of sensed signal to shape response characteristic and circuit breaker incoprorating same
An arc fault detector having a pulse generator generating a pulse each time an arc is struck includes a limiting amplifier which limits the amplitude of the pulses to discriminate against false...
|
|
|
5808850 |
MOV surge arrester
The invention is a MOV based surge arrester that uses MOVs manufactured from a recently patented process. These new technology MOVs are significantly more uniform in their composition, resulting in...
|
|
|
5805404 |
Common insulating housing for elements of varying terminals
A modular connector block system used for making terminations of telephone circuit wires. The system enables terminal blocks of different size and density to be formed utilizing similar insulated...
|
|
|
5805399 |
Apparatus for detecting luminous tube and power supply faults where ground fault currents may be absent
Apparatus for detecting series arcs and output load faults in high frequency luminous tube power supplies and ballasts including wideband ringing and detector circuits for collecting the intense...
|
|
|
5804861 |
Electrostatic discharge protection in integrated circuits, systems and methods
An integrated circuit has a semiconductor die with a substrate and at least first and second bond pads. An internal circuit is fabricated on the semiconductor die and connected to the first bond...
|
|
|
5796570 |
Electrostatic discharge protection package
Described is a circuit board having protection against electrostatic discharge. The board includes a plurality of interconnect traces and an electrically conductive ground plane formed on a...
|
|
|
5796568 |
Current limiter device
A reversible short circuit current limiter which has at least one PTC thermistor connected in parallel with a shunt impedance branch, and is connected in series with at least one capacitor or a...
|
|
|
5793592 |
Dynamic dielectric protection circuit for a receiver
A topology for arranging a plurality of transistors between a signal source and an off-chip receiver, using a single power supply voltage. A pass through NFET has a gate controlled by a network...
|