Matches 501 - 550 out of 1646 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >
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6243243 Solar array with ESD protection  
A solar array having protection from electrostatic discharge (ESD) has a load coupled to the array. The load has a ground terminal that is also coupled to the solar array. A high impedance device...
6239956 Fail-safe timing circuit and on-delay circuit using the same  
The present invention relates to a fail-safe timing circuit and on-delay circuit which does not produce an erroneous output where the delay time is shortened, due to a fault. The timing circuit...
6236236 2.5 volt input/output buffer circuit tolerant to 3.3 and 5 volts  
An apparatus and method of communicating signals between a 2.5 volt internal circuit and both 3.3 and 5 volt external circuits using a P-well. The apparatus includes a circuit having a P-well...
6233130 ESD Protection device integrated with SCR  
A transient voltage-pump circuit pumps the ESD voltage to a higher voltage. The pumped-high transient voltage is used for early triggering of an SCR. In one version of the present invention, a pn...
6229682 Transient voltage surge suppressor  
A transient voltage surge suppressor is provided to protect equipment with voltage sensitive electronics, such as office equipment, from surges or transients in the multi-phase power distribution...
6226166 Transient overvoltage and lightning protection of power connected equipment  
An overvoltage protection circuit is provided for protecting electrical equipment from transients on power lines (41, 42). The circuit has a string of series-connected silicon avalanche diodes...
6226162 Surge suppression network responsive to the rate of change of power disturbances  
A surge suppression network for single and multiphase ac systems has a voltage clamping device connected in series with a gated crowbar device across the supply voltage in parallel with the load to...
6222710 Semiconductor device  
A semiconductor device of SOI structure with improved ESD resistance is provided. In an I/O protection circuit of a semiconductor device of SOI structure, each unit channel width resistance value...
6215637 Internal voltage clamp protection circuit without parasitic cross-talk  
A internal circuitry protection scheme which protects on-IC circuitry when an external pin is shorted to a higher than normal voltage. The disclosed solution eliminates cross-talk due to a...
6215633 Active current limiter  
An active current limiter controls the flow of current between a power source and a load. The active current limiter includes a power switch coupled between the power source an the load, a current...
6212050 Circuit and method for protecting input/output stage of a low voltage integrated circuit device from a failure of the internal power supply or in the power-up sequencing of power supplies  
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...
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...
6208493 Method and system for protecting integrated circuits against a variety of transients  
A high-energy pulse protection device (10) protects an integrated circuit (28 and 30). The integrated circuit (28 and 30) is associated with an integrated circuit substrate region (64). The...
6198615 Voltage unit bus clip  
A telecommunications protection unit includes a voltage unit having an electrically insulating base configured to house a diode module assembly and a voltage limiting cell therein. The voltage...
6195244 Electronic circuit with a screening case to attenuate high-frequency interference  
In an electronic circuit, comprising electrical and electronic components and their connecting lines (3) on a printed circuit board (2), in which case a shielded housing encloses the electronic...
6191928 Surface-mountable device for protection against electrostatic damage to electronic components  
The thin film, electrical device is an subminiature overvoltage circuit protection device in a surface mountable configuration for use in printed circuit board or thick film hybrid circuit...
6188557 Surge suppressor  
Surge suppressor apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection...
6188552 High resistance grounding systems for oil well electrical systems  
A normally ungrounded power system for a oil well is provided which includes a power transformer above ground and a pump motor below ground. There is provided a signal system which includes a below...
6181542 Method of making a stack-polysilicon capacitor-coupled dual power supply input/output protection circuit  
An interface buffer circuit connected at an interface of circuits having a high voltage power supply and circuits having a low voltage power supply, prevents damage due to application of the high...
6181214 Voltage tolerant oscillator input cell  
An integrated circuit oscillator input cell has an oscillator input pad, an oscillator feedback pad, a core terminal, an inverter and an electrostatic discharge protection circuit. The inverter has...
6175482 Output driver device with electrostatic discharge protection  
An output driver device (10) includes a first output transistor (12) and a second output transistor (14) coupled to a bias transistor (16). The bias transistor (16) is coupled to a ground...
6172864 Protection against overvoltages of an interface of telephone lines  
The present invention relates to a system for protecting against overloads in a telephone system. The telephone system includes a telephone exchange, a ringing device and an interface, coupled to...
6172863 Phase control switching system  
A phase control switching system for controlling opening and closing timings of a power switching device to suppress the occurrence of an exciting rush current or a make-and-break surge voltage...
6172590 Over-voltage protection device and method for making same  
A mass-producible, cost-effective discrete electrical protection device utilizing a precision gap between two electrically conductive members attached to an electrically insulating substrate to...
6163446 Protective circuit  
A protective circuit is disclosed for protecting an integrated circuit against electrostatic discharge, so-called ESD. The integrated circuit is connected to a supply voltage via a V cc -pad (2)...
6160695 Transient voltage protection device with ceramic substrate  
A method for fabricating transient voltage protection devices is described wherein a gap between a ground conductor and another conductor is formed using a diamond dicing saw. Substrate material...
6160694 Electronic bridge and half-bridge circuits with suppression of high-voltage transients on the power supply line  
An electronic circuit with suppression of high-voltage transients on the power supply line includes first and second power transistors series-connected between first and second power supplies, and...
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...
6157530 Method and apparatus for providing ESD protection  
A novel ESD protection circuit for multiple power supplies, having both inventive inter-rail ESD circuitry and inventive single-rail ESD circuitry. The inter-rail ESD circuitry is scaleable and...
6157529 Basic surge protector  
The specification discloses a Basic Surge Protector for protecting an electrical equipment connected on its load side from spurious or excessive transient voltages or surges or both on an...
6157528 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...
6157203 Input circuit with improved operating margin using a single input differential circuit  
A semiconductor integrated circuit including an input circuit constituted as a single-input differential circuit which has a first MOSFET to whose gate a reception signal with a small amplitude...
6151202 Discharging electrostatic charge during hot card insertion  
A system for dissipating electrostatic build-up from a circuit card to a chassis ground within an electronic system, prior to connection of the circuit card with the electronic system. A circuit...
6151200 Method of discharging SOI floating body charge  
Apparatus and method for discharging the body of a monitored SOI device through first and second discharge circuits. The second discharge circuit is selectively activated when the body potential of...
6147853 Protection circuit that can be associated with a filter  
A structure for protection against electrostatic surges having two input terminals and two output terminals. The output terminals of the structure are connected to the inputs of a circuit to be...
6147852 Device for protecting an integrated circuit against electrostatic discharges  
An electrostatic discharge protection circuit for integration into an integrated circuit device. The protection circuit includes at least one transistor having a first terminal connected to an...
6144543 Grounding device  
A grounding device for interfacing telecommunications equipment connected through tip and ring conductors and an electronic module with a grounding path for discharging current surges and voltage...
6144542 ESD bus lines in CMOS IC's for whole-chip ESD protection  
In this invention, a new whole-chip ESD protection scheme with the ESD buses has been proposed to solve the ESD protection issue of the CMOS IC having a large number of separated power lines....
6144538 High voltage MOS transistor used in protection circuits  
An electrostatic discharge (ESD) protection circuit is formed on a semiconductor wafer. The semiconductor wafer comprises a substrate, an active region having a doped area formed in a predetermined...
6141200 Stacked PFET off-chip driver with a latch bias generator for overvoltage protection  
Series-connected stacked PFETS are employed in an off-chip driver output stage. When the output driver is enabled, the gate of the PFET transistor directly connected to the output is biased by a...
6137664 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...
6134093 Category 5/25-pair protector  
A Category 5/25-pair circuit protection assembly for protecting telecommunication related equipment and the like from power and transient surges includes a two-piece interfitting housing which...
6128173 Semiconductor integrated circuit device having protective transistors with P-N junction broken down earlier than breakdown of gate insulator of component transistors  
A semiconductor integrated circuit device includes a first protection circuit for protecting against static charge applied to a signal terminal, a second protection circuit for protecting against...
6128171 Gate-coupled structure for enhanced ESD input/output pad protection in CMOS ICs  
An electrostatic discharge protection circuit comprising a static discharge input node, a first NMOS FET having its drain connected to the input node and its source and substrate connected to Vss,...
6127876 Positive ground bounce compensation circuit for bipolar integrated devices  
A circuit (12) for reducing positive ground bounce effects on an integrated circuit (10) of the type having an integrated circuit transistor (40) that has reduced conduction when exposed to a...
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...
6121765 Isolated electrical power supply  
A isolated power supply for protecting electrical devices from transient voltages and currents is disclosed. Specifically, the filter has a toroid and resistor which are used in conjunction with an...
6118643 Modular surge suppression system and method  
A surge suppression module is provided for connection to a wall receptacle and interconnection with other modules. Each module includes a top portion rotatably connected to a bottom portion. A male...
6111758 Electronic component having alternate functionalities  
An electronic component (100) includes a body portion (105) for enclosing first and second electronic devices (415, 430). The component (100) has first and second leads (110, 115) extending...
6111740 Overvoltage protection system and overvoltage protection element for an overvoltage protection system  
An overvoltage protection system with an overvoltage protection element (1) and an ignition aid which triggers the overvoltage protection element (1), the overvoltage protection element (1) having...
Matches 501 - 550 out of 1646 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >