Matches 101 - 150 out of 350 < 1 2 3 4 5 6 7 >
Match Document Document Title
6445556 Voltage protection for computer processors  
A multi processor computer system includes processors 102 in processor receptacles 104 , and voltage modules 106 and voltage module receptacle 108 . The system accepts both direct voltage...
6441675 Method and apparatus for detection of electrical overstress  
A circuit that senses changes in the electrical characteristics of one or more circuit elements and generates one or more signals based, at least in part, on the electrical characteristics that are...
6424511 Automotive battery disconnect device  
A battery disconnect device includes a housing with a trip/sense circuit, a sealed solenoid and two bars. The solenoid includes a spring loaded contactor disposed in a sealed chamber which normally...
6418002 Power supply supervisor having a line voltage detector  
A power supply supervisor having a line voltage detector is used to monitor a power supply. A peak detector detects the line voltage by measuring the PWM switching signal in the secondary of the...
6362942 Input stage protection circuit for a receiver  
An extraneous voltage protection circuit and method transforms an overvoltage input signal or undervoltage input signal to a suitable voltage level for a protected circuit. An input voltage...
6357012 Microcontroller with auto-alarm device  
A microcontroller with a self-prompting (self-wake-up) device, particularly for use in electrical adjusting drives, having a control device for specifying an active and an inactive operating state...
6344960 Electrostatic discharge protecting circuit for semiconductor device  
An electrostatic discharge protecting circuit for a semiconductor device is provided and includes a first circuit portion including an N-type MOS field effect transistor formed on a P-type silicon...
6344957 Overshoot/undershoot prevention device and overshoot/undershoot prevention method  
The present invention has the object of providing an overshoot/undershoot prevention device and overshoot/undershoot prevention method that are highly effective against both overshoot and...
6344959 Method for sensing the output voltage of a charge pump circuit without applying a load to the output stage  
The presently disclosed method and apparatus provides the sensing of an output voltage of a charge pump without applying a load to the output stage. In the charge pump the voltage change which...
6329754 Diagnostic system for a ballast of a high-pressure gas discharge lamp for a motor vehicle  
A diagnostic system for a ballast of a high-pressure gas discharge lamp in a motor vehicle includes the ballast and a separate light control module that controls the ballast via a supply line and...
6324040 Sensor supply open load detector circuit  
A sensor circuit (10) device for detecting an open circuit to an electronic component (20) is disclosed. The sensor circuit (10) includes a detector circuit (12) operatively coupled to the...
6300815 Voltage reference overshoot protection circuit  
A voltage reference overshoot protection circuit senses unwanted ringing voltage levels in a driven device such as a backplane and controls the gate voltage to a voltage level control transistor...
6294943 Method of designing fail-safe CMOS I/O buffers whose external nodes accept voltages higher than the maximum gate oxide operating voltage  
A fail-safe Input/Output buffer bias circuit for digital CMOS chips provides protection for Input/Output buffers which have high voltages applied to the Input/output node and are subjected to power...
6222712 Device having processor means and having undervoltage detection means  
In a device means having connections means for applying a direct voltage (DCV) and having an undervoltage detection circuit (31), a control voltage (CV) having two different direct voltage values...
6198403 Power line meter/monitor with LED display  
In this micro-controller-based line voltage meter/monitor instrument, an AC signal-under-test is sensed from the line voltage via a broadband isolation transformer, and processed to provide RMS and...
6185082 Protection circuit for a boost power converter  
A protection circuit for a boost power converter provides input under-voltage protection and output over-voltage and over-current protection. The protection circuit includes a control power MOSFET...
6178076 Power-electronic circuit arrangement for compensating for mains system disturbances and mains voltage reductions  
In a power-electronic circuit arrangement for compensating for mains system voltage reductions and mains system disturbances, a second auxiliary voltage source is provided, whose voltage is chosen...
6169311 Semiconductor integrated circuit having an input and output protective circuit  
Disclosed is a MOS-type semiconductor integrated circuit, which has: an input circuit section connected to an input pad; an output circuit section connected to an output pat; and an internal...
6150792 Phase monitor  
A phase monitor for a short-circuited asynchronous three-phase motor comprises a first and a second sensing unit, both of which are connected to a supply voltage line to the motor in order to sense...
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...
6121759 Arrangement of switched-mode power supplies connected in parallel without a separation diode  
6104585 Protection circuit for tap-grounded leakage transformer  
Induced voltages of two tertiary coils magnetically coupled with two secondary coils, respectively, are detected separately by two voltage detector circuits, and the detected voltages V1 and V2 are...
6101076 Electromagnetic safety enhancement circuit for universal serial bus systems  
An electromagnetic safety (EMS) enhancement circuit is provided for a USB (Universal Serial Bus) system, which can simulate an unplugging and replugging action so as to ensure continuous operation...
6080022 Multivoltage keyed electrical connector  
A connection system for providing a consumer-friendly connection between an expansion card and a host device. The host device includes a male connection while the expansion card includes a female...
6075687 Monitor X-ray protection device  
An X-ray protection device adapted to be incorporated into a monitor that includes a cathode ray tube actuated by a high voltage from a transformer powered by a low voltage power supply. The X-ray...
6072676 Protection circuit for an excitation current source  
A protection circuit for an excitation current source protects against excessive compliance voltage by using a cascode transistor between the current source and an output terminal, and a transistor...
6054888 Level shifter with protective limit of voltage across terminals of devices within the level shifter  
A level shifter interfaces a digital system having devices designed for low operating voltages to an external system having higher operating voltages. The level shifter is comprised of two level...
6023178 Pulse width control IC circuit and switching power supply unit  
A pulse width control IC circuit that greatly reduces price, increases packaging density,and improves reliability for switching power supply units, wherein the IC circuit is on a single chip and...
6020702 Single phase compressor thermostat with start relay and motor protection  
The present invention involves a refrigeration system. The refrigeration system comprises an electrical compressor motor, a line adapted to be connected to an electrical power line and a thermostat...
6018450 Output driver with overshoot and undershoot protection  
A output driving circuit having an output driving element, an overshoot protection mechanism, and an undershoot protection mechanism. When the overshoot protection mechanism senses an overshoot...
6011680 Connector, in particular a plug-in connector for TT and TN networks  
Connector, in particular a plug-in connector for TT and TN networks, in which an electronic monitoring and control unit supplied with a voltage switches through conductors or releases the...
6008508 ESD Input protection using a floating gate neuron MOSFET as a tunable trigger element  
Disclosed is a floating gate neuron MOS transistor that may be incorporated into devices such as low voltage silicon control rectifiers for protection of internal circuits against electrostatic...
6005759 Method and system for monitoring and controlling an electrical distribution network  
A system for monitoring and controlling an electrical distribution network comprises an electrical distribution substation having a local area network (LAN), a feeder subsystem and a gateway. The...
5990724 Method and a device for detecting and handling short-circuit phenomena for power semiconductor devices of turn-off type connected in series  
In a method and apparatus used for detecting and handling a short circuit in a circuit having a plurality of power semiconductors connected in series the voltage is divided across the electrodes...
5949632 Power supply having means for extending the operating time of an implantable medical device  
A power supply comprising: a power source including a capacitive, nuclear or an electrochemical device for storing electrical energy; sensing circuitry for sensing when the voltage on power source...
5943246 Voltage detection of utility service disturbances  
A digital voltage detector uses a running average to detect utility service disturbances in real time. An isolation transformer taps the main electrical AC power supply line and provides an analog...
5926384 DC-dC converter having dynamic regulator with current sourcing and sinking means  
An electronic circuit includes a dynamic regulator connected to a load and a dc-to-dc converter to reduce a need for bulky and expensive capacitors which would otherwise be required to suppress...
5923513 Active snubber device for power modules  
A snubber device for a power switch comprising a sensing device coupled in the output circuit of the power switch, the sensing device having a reference input and providing an output indicating if...
5895958 Input protection circuit for use in semiconductor device having an improved electrostatic breakdown voltage  
In an input protection circuit, a bipolar protection device is constituted of a semiconductor substrate of a first conductivity type, a first diffused layer of a second conductivity type formed in...
5889465 Power service unit with automated dialer and other enhancements  
A power service unit suited for providing conditioned power to a consuming device at a remote location. The power service unit includes a charger/rectifier, a back-up power supply, together an...
5875085 Lithium electronic-mechanical automatic protection system (LEAPS)  
This device includes, connected in parallel with each of the elements (I, II), corresponding shunt regulators (S11, R11, S21, R21) linked together in series, and the control electrodes of which are...
5869873 Electrostatic discharge protection circuit having eprom  
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...
5859756 Automatic power line monitor and controller system  
An automatic power line monitor system is disclosed for use in monitoring the electrical voltage supplied to an electrical system or appliance by monitoring the supplied electrical voltage and...
5821804 Integrated semiconductor circuit  
An integrated semiconductor circuit includes a semiconductor substrate. A number of first potential buses carry a first supply potential of the semiconductor circuit during operation. A number of...
5818670 Switching mode power supply with protection function against overcurrent and overvoltage  
A switching mode power supply which controls power source supplied to electronic equipment, which is designed to protect a circuit against an overvoltage through a power line of coil or overcurrent...
5809311 System and method for providing centralized backup power in a computer system  
In a computer system having a plurality of electronic subsystems therein adapted to receive main electrical power from an interruptible main power supply, ones of the electronic subsystems being...
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...
5764469 Apparatus for protecting eletronic devices in a vehicle's electronic system and for preventing discharge of the vehicle's battery  
An apparatus to provide protection for electronic devices which receive power for their operation at least in part from a vehicle's electrical system and battery. The electronic device protecting...
5754074 Protected switch  
A protected switch has a power first semiconductor device having a first main electrode for coupling to a first voltage supply line, a second main electrode coupled to a first terminal for...
5737168 Electrical power management system  
A control system used to monitor an AC power source connected to AC powered user equipment. The control system is designed to monitor the output voltages of the AC power source to ensure that they...
Matches 101 - 150 out of 350 < 1 2 3 4 5 6 7 >