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5969931 |
Interface structure for electronic apparatus
An electronic apparatus includes a locker having a plurality of shelves, and a plurality of packages 25 are inserted in the respective shelves from the front thereof. Back boards are arranged in...
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5969929 |
Distributed ESD protection device for high speed integrated circuits
A distributed electrostatic discharge (ESD) protection circuit for high frequency integrated circuits. A transmission line from an integrated circuit (IC) pad or package pin couples a plurality of...
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5969923 |
Electrostatic protection structure for MOS circuits
An ESD protection circuit includes a pair of NPN lateral transistors electrically connected in series with the emitter of one of the transistors electrically connected to the collector of the other...
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5963439 |
Device for limiting transient variations of a supply voltage
The present invention relates to a device for limiting transient variations of a voltage for supplying a load from a dc/dc converter, including an input terminal, that receives the voltage provided...
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5963414 |
Integrated hybrid surge protector architecture configured to accommodate multiple replaceable communication signal surge protection modules in common housing with AC voltage receptacle terminal strip
A hybrid surge protector architecture is configured to accommodate a plurality of replaceable L-shaped communication signal surge protection modules and a multi receptacle AC voltage terminal strip...
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5963412 |
Process induced charging damage control device
A plasma charging damage protection structure (40, 104) includes a first conduction path (90) for conducting positive plasma charging away from a device needing protection (44) and a second...
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5963409 |
Input/output electrostatic discharge protection circuit for an integrated circuit (IC)
An input/output electrostatic discharge (ESD) protection circuit for an integrated circuit disposed between an input/output port and the internal circuitry, including an input path protection...
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5959821 |
Triple-well silicon controlled rectifier with dynamic holding voltage
An electrostatic discharge (ESD) protection circuit for an IC device including a triple-well SCR and a control circuit connected between the triple-well SCR and ground. The triple-well SCR is...
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5959820 |
Cascode LVTSCR and ESD protection circuit
The cascode LVTSCR includes two or more SCRs (silicon controlled rectifiers). Each SCR has an anode, a control gate, and a cathode. The SCRs are cascoded in series by coupling the control gates of...
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5956223 |
Surge protection system including proper operation indicator
A meter extender surge suppression system that fits between a utility meter and a meter box is provided to protect downstream equipment from surges on the electric power lines. The system includes...
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5956219 |
High voltage power supply clamp circuitry for electrostatic discharge (ESD) protection
Clamp circuitry capable of providing ESD protection to a high voltage supply connection is provided. The clamp circuitry increases the area efficiency of ESD power supply clamping circuitry to sink...
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5953195 |
Coaxial protector
A protector which is coupleable with a coaxial transmission line. The protector includes a gas tube assembly. The gas tube assembly has a first electrode which is coupleable with the inner...
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5953194 |
Arrangement for protecting telecommunications equipment from voltage transients
An arrangement for protecting an electrical circuit such as a telephone circuit from a voltage transient comprises a voltage clamp or foldback device (3) arranged to be connected between a...
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5953190 |
ESD protection circuit for I/O buffers
An electrostatic discharge (ESD) protection circuit for an output transistor coupled to an I/O pin of an integrated circuit, including a logic circuit having at least one data input, a tristate...
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5949634 |
Electrostatic discharge protection circuit triggered by MOS transistor
An electrostatic discharge protection circuit comprises an NMOS transistor and a silicon-controlled rectifier. The NMOS transistor is configured with one source/drain region connected to a first...
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5946176 |
Electrostatic discharge protection utilizing microelectromechanical switch
An integrated circuit having electrostatic discharge protection. The integrated circuit is built from a semiconducting substrate. A circuit is formed within the semiconductor substrate. The circuit...
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5940259 |
Voltage surge protector for electronic circuits with semiconductor components
A surge protection circuit provides multiple stages of protection for an electronic circuit having semiconductor components from damage due to passage of excessive amount of current during a line...
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5933311 |
Circuit breaker including positive temperature coefficient resistivity elements having a reduced tolerance
A circuit breaker including a switch having an open and a closed position connected to a line of the circuit breaker. A first actuating device, actuated by a first activating signal, is connected...
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5930101 |
Overvoltage cut-off circuit of private exchange branch having tie line
An over voltage cut-off circuit of a private branch exchange for cutting off the over voltage induced into an E&M (ear and mouth) tie line, includes an E ("ear") line over voltage cut-off circuit...
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5930099 |
Grounding arrangement for a powerline system
A grounding arrangement for a normally ungrounded multi-phase powerline system, which also carries dc information signals. A resistance and a spark gap device are provided in a path between system...
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5930098 |
Multichip semiconductor structures with interchip electrostatic discharge protection, and fabrication methods therefore
Interchip and intrachip electrical discharge suppression connections or networks are disclosed for three-dimensional multichip semiconductor structures. The interchip suppression networks...
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5930094 |
Cascoded-MOS ESD protection circuits for mixed voltage chips
Bias circuits which define control terminal voltages in a cascoded nMOS ESD protection circuit, such that the circuit is in high impedance state (OFF) during normal operation, and low impedance...
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5926353 |
Method for protecting mixed signal chips from electrostatic discharge
An electrostatic discharge (ESD) protection device for an integrated circuit (IC) is presented which has both digital and analog I/O pads. The ESD protection device employs a separate ESD power...
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5923519 |
Surge protection device
A surge protecting device for protecting circuit parts or electric power units of electronic devices from surges caused from exterior environments has a surge inflow terminal for receiving exterior...
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5923517 |
Transient voltage surge suppressor with a reversible on-off switch assembly
A transient voltage surge suppressor (TVSS) receptacle includes front and rear matable casings including a plurality of through openings for receiving the blades of an electrical plug; an...
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5923516 |
Apparatus for protecting electrical and electronic equipment and associated method
A protection apparatus includes a relay being switchable between a protected state and an operating state, and a controller for permitting a user to switch the relay to the operating state, and for...
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5917689 |
General purpose EOS/ESD protection circuit for bipolar-CMOS and CMOS integrated circuits
An apparatus and method for protecting integrated circuits from electrical overstress and eletrostatic discharge is provided. The apparatus includes a primary EOS/ESD protection device and a...
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5914845 |
Surge protector system
A surge protector system is provided including multiple surge protector circuits situated within a service panel of a structure. The surge protector circuits are connected between outlets of the...
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5914844 |
Overvoltage-tolerant input-output buffers having a switch configured to isolate a pull up transistor from a voltage supply
The invention relates to a mixed voltage bus system and in particular, interfaces between a number of integrated circuits and a bus where some of the integrated circuits operate at one logic level...
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5914841 |
Circuit for driving magnetostrictive device
Provided is a circuit for driving a magnetostrictive device including: a high voltage interrupting circuit section for interrupting an instantaneously leaking high voltage depending on the...
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5914662 |
Circuit and method for indicating the remaining suppressing capacity of a multiple-element transient-voltage protection device
A suppressing capacity circuit for use with a transient voltage protection device; the transient voltage protection device includes a plurality of series-coupled current-limiting elements and...
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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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5910874 |
Gate-coupled structure for enhanced ESD input/output pad protection in CMOS ICs
An electrostatic discharge 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, a first...
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5910873 |
Field oxide transistor based feedback circuit for electrical overstress protection
A circuit for protecting an interface cable driver and the circuitry attached to the driver from electrical overstress damage, such as that which may arise from an electrostatic discharge. The...
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5909349 |
Gas tube surge protector with sneak current protection
A gas tube protector module is provided that provides sneak current protection in addition to voltage surge protection. The module has two pairs of terminals with one pair for connection to outside...
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5909347 |
Electrostatic discharge protection circuit having P-type flash memory cell
An electrostatic discharge protection circuit protects an internal circuit that is coupled to a pad from electrostatic discharge damage. The electrostatic discharge protection circuit comprises a...
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5909065 |
Multi-stage precharging system to limit power supply transients when printed circuit boards are plugged in
A system for limiting power supply transients in a powered up backplane when a printed circuit (PC) board is plugged in. The PC board includes first connecting pins with different lengths...
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5907464 |
MOSFET-based power supply clamps for electrostatic discharge protection of integrated circuits
Electrostatic discharge protection circuits adapted for use in low voltage CMOS processes have at least one PFET in the primary charge conduction path, and timer circuits configured to enable the...
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5907462 |
Gate coupled SCR for ESD protection circuits
A protection device comprising a gate-coupled silicon-controlled rectifier (SCR) (100), SCR (100) comprises an anode (105) formed in n-well (104) and connected to a pad (128) and a cathode (111)...
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5905622 |
Transient voltage surge suppressor with internal barriers
A transient voltage surge suppressor (TVSS) receptacle having front and rear, matable casings including a plurality of through openings for receiving the blades of an electrical plug; a plurality...
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5905621 |
Voltage scaling circuit for protecting an input node to a protected circuit
A voltage scaling circuit for protecting an input node to a protected circuit uses a voltage shifting circuit that includes two nmos transistors. One nmos transistor is configured as a...
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5905618 |
Voltage protected level shifting of chip driver
An output driver which maintains over voltage protection on individual circuit elements, providing either a level shifted logic high or a floating-state on its output. The output driver includes a...
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5905614 |
Device for protection against electrostatic discharges on the terminals of a MOS integrated circuit
A device for protection against electrostatic discharges on the terminals of a MOS integrated circuit and characterized in that it consists of a first and a second circuit branch coupled between...
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5903425 |
Lateral PNP fast turn-off circuit
A control circuit for providing fast turn-off of a PNP transistor with output transient protection. An embodiment of the invention provides a current amplifier coupled between a positive voltage...
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5903424 |
Method for protecting an integrated circuit against electro-static discharges
In a device for the protection of integrated circuits against electrostatic discharges, the protection structure comprises a thyristor with an N+ region connected to the ground, a P- substrate, a...
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5903420 |
Electrostatic discharge protecting circuit having a plurality of current paths in both directions
An electrostatic discharge (ESD) protecting circuit for effectively discharging an overcurrent applied to a semiconductor circuit device, by providing a plurality of current paths. The ESD...
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5903419 |
Circuit for electrostatic discharge (ESD) protection
An electrostatic discharge (ESD) circuit (12) provides robust protection to an input/output driver circuit (10). The discharge path is provided by a parasitic bipolar transistor (202). The...
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5901028 |
Electricity meter provided with a system for protection against surges
At least one live conductor and one neutral strap are provided for an electricity meter, the respective inlets and outlets of the live conductor and of the neutral strap being disposed inside the...
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5901022 |
Charged device mode ESD protection circuit
An ESD protection circuit for deep-submicron CMOS IC's provides Charged-Device Model (CDM) protection in addition to Human-Body Model (HBM) and Machine Model (MM) ESD events. An on-chip inductor is...
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5896265 |
Surge suppressor for radio frequency transmission lines
A surge suppressor for a radio frequency (RF) transmission line includes an a printed circuit board having a conductor for connection in series with a RF transmission line. The conductor has a...
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