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7616460 |
Apparatus, system, and method for AC bus loss detection and AC bus disconnection for electric vehicles having a house keeping power supply
An alternating current (AC) bus malfunction detection and protection module monitors an AC voltage that is provided on a bus by a house keeping power supply of a power system. If the AC voltage on...
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7598538 |
ESD protecting circuit and manufacturing method thereof
An ESP protecting circuit and a manufacturing method thereof are provided. The ESP protecting circuit includes a device isolation layer, first and second high-concentration impurity regions, a...
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7596436 |
Electronic control device and method for controlling the operation of motor vehicle components
The operating voltage is monitored in a microcontroller having associated output stages which are used to control components. In the case of over-voltage, the output stage is disconnected. Two...
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7595569 |
Versatile and intelligent power controller
The invention provides a monolithic, highly integrated power supply circuit capable of providing various voltages for circuits on an expansion card, either from a main supply source or an auxiliary...
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7570472 |
Protection circuit for avoiding using of an improper alternating current power source
A protection circuit for avoiding the use of an improper alternating current source includes: a rectifier circuit; a voltage comparator circuit having a first input terminal, a second input...
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7536569 |
System and method for managing power provided to a portable information handling system
A portable information handling system having internal battery power and external adapter power manages power drawn from the external power adapter to avoid exceeding the power rating of the...
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7531916 |
Protection circuits for hybrid power systems
A power management and protection system is provided for a hybrid fuel cell system. The hybridization includes a fuel cell stack and an energy storage device (ESD) having either batteries,...
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7525780 |
Liquid crystal television and backlight power supplying circuit
Disclosed is an inverter-circuit power supply circuit capable of redriving an inverter circuit upon temporary blackout without turning on a main power again An inverter-circuit power supply circuit...
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7521984 |
Driving configuration of a switch
A driving circuit of a switch includes first and second transistors connected in series to each other and to relative intrinsic diodes in antiseries and driven by a driving device that includes at...
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7518430 |
Mechanism for providing over-voltage protection during power up of DC-DC converter
An over-voltage protection circuit prevents an anomaly, such as a short circuit in the upper-switched electronic device of a DC-DC power supply, from propagating to downstream circuitry. The...
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7518341 |
Method for verifying smart battery failures by measuring input charging voltage and associated systems
A method and associated system are disclosed for verifying charging failures for smart batteries by measuring input charging voltage and associated systems. In one embodiment, a determination is...
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7514956 |
Semiconductor device
A first and a second charging circuit each having a diode and a capacitor are connected to a buffer. In the first charging circuit, an overshoot based on a reflected signal generated by an output...
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7511934 |
System and method for conditioning a power supply transmission for supply to a load circuit
A system and method for conditioning an alternating current (“AC”) power transmission for supply to a load circuit. In one aspect, the invention is a system comprising: a power conditioning...
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7480124 |
Detection of an AC input phase-loss on a multi-phase AC servo drive
Systems and methods that detect a phase loss condition in a three-phase electrical power source are presented. The system includes a detection component that measures and/or monitors a magnitude...
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7471494 |
Output circuit
An output circuit for a circuit includes an input node coupled to the circuit, an output node, a reference potential terminal, a supply potential terminal, a semiconductor switch connected between...
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7468875 |
Plasma television and power supply control device
A microcomputer 60 takes in voltages output from the sustaining voltage Vsus generation circuit 52 , the addressing voltage Vadd generation circuit 53 , and the standby voltage generating...
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7450359 |
System and method for providing a temperature compensated under-voltage-lockout circuit
A system and a method are disclosed for providing a temperature compensated under-voltage-lockout circuit that has a trip point voltage that is not sensitive to temperature variation. The...
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7439874 |
Load status indicator
A load status indicator is disclosed for determining whether power is available to, and current is flowing through, a load. A first visual status indicator may light up when power is available to...
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7423856 |
Fault control circuit and method therefor
In one embodiment, a fault control circuit of a switching power supply controller is configured to disable an operating voltage of the switching power supply controller responsively to a fault...
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7420791 |
Fault signature system for power management integrated circuits
A power management IC including a dual purpose pin, a fault detection system, and a fault signature system. The dual purpose pin performs a power management function during normal operation (e.g.,...
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7394223 |
Over voltage and over current protection integrated circuit
An integrated circuit is disclosed including a primary input for receiving an input voltage, a battery voltage input for receiving a battery voltage signal and an output for providing an output...
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7385794 |
Secondary battery protection device
Device miniaturization is made possible by building a battery protection circuit in a microcomputer. A secondary battery protection device includes a voltage detection device that detects a voltage...
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7382594 |
Method of forming an integrated voltage protection device and structure
In one embodiment, a voltage protection circuit uses two back-to-back transistors to receive an unprotected voltage and form a protected voltage.
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7379310 |
Over-voltage protection circuit for a switched mode power supply
The switched mode power supply comprises an inductor, a switching transistor, a controller circuit coupled to the switching transistor, a rectifying means and a feedback regulation loop for...
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7369384 |
Regulator and electronic apparatus therewith
To reduce the electric power wasted in an overvoltage protection circuit, a regulator IC 100 incorporates an overvoltage protection circuit 105 that stops the output operation of the regulator...
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7369382 |
Integrated circuit with an undervoltage detector
An integrated circuit arrangement includes connection terminals, an undervoltage detector, and at least one circuit unit. The connection terminals are configured to receive a supply voltage. The...
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7342755 |
High energy capacitor and charging procedures
The invention is a high electrical energy storage system consisting of arrays of high energy capacitors and their charging and discharging protocols. An array of capacitors are conductively...
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7340325 |
Priority powerdown system and method for power distribution systems
A power controller for power sourcing equipment in a distributed power network provides power down policies and priority in the event of a power supply failure. The power down priority and policy...
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7330343 |
Current-limiting protection circuit for a power supply
The present invention discloses a current-limiting protection circuit for a power supply, which applies to a power supply that has a maximum power-limiting function, wherein the user will be...
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RE39933 |
Power conversion integrated circuit and method for programming
A single input pin (48) provides multi-functional features for programming a power supply (10). By connecting the appropriate interface circuit (92, 100, or 112) to the single input pin (48), the...
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7280331 |
Power reconnect and voltage control
In one aspect, a power connect device receives ac line voltage and provides ac load voltage to a load device. In one embodiment, the power connect device includes: a connect panel, a transformer...
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7269764 |
Monitoring VRM-induced memory errors
A method and system for improving Field Replacement Unit (FRU) isolation in memory sub-systems by monitoring Voltage Regulator Module (VRM) induced memory errors. A comparator compares the output...
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7262945 |
Electrical over/under voltage automatic disconnect apparatus and method
An analog or digital circuit that senses both low and high input voltage and operates to disconnect both line and neutral electrical power connections to a protected device when abnormally low or...
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7262944 |
Receptacle
A receptacle which is defined in a given interface standard, performs data transfer by using differential signals, and is connected to a plug when transmitting a signal between devices. The...
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7250875 |
Traffic signal transfer switch
A transfer switch configured particularly for use with traffic signal controllers, to enable a traffic signal controller to be powered by a portable electrical generator, when utility line power is...
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7233085 |
Protection circuit for a power supply unit, and power supply unit with a respective protection circuit
The protection circuit serves for the monitoring of output voltages of a power supply unit which has a normal mode and a standby mode. The protection circuit comprises a first switching stage (T 1...
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7224563 |
Method and device for circuit control
One disclosed embodiment of the invention is directed to circuit control that comprises sensing a delivered voltage to a portion of an integrated circuit, determining an appropriate frequency for...
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7219022 |
Methods and apparatus for detecting failure of an isolation device
Apparatus for detecting failure of an isolation device includes a current sensor to sense current through the isolation device and a circuit responsive to the current sensor output signal and to an...
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7196891 |
Control circuit for frequency converter
A control circuit for a frequency converter is provided. The control circuit includes a switch circuit, a timer switch, a starter circuit, a starter relay, and a timer relay. The control circuit is...
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7170731 |
Circuit arrangement for operating a linear exhaust gas probe
A circuit arrangement for operating a sensor comprises a control circuit for electrically supplying the sensor via a plurality of connecting lines and/or at least to detect one electrical output...
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7164273 |
Power source monitor
A power source monitor and method to monitor various operating line conditions of an electrical power outlet comprising measuring line voltage and frequency, analyzing wiring conditions, displaying...
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7158358 |
PDA with built-in voltage protection
A present invention provides a PDA with built-in voltage protection, comprising a main device, a socket, and a voltage protection module. The main device performs necessary data processing. The...
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7152168 |
Recharging power storage devices with power over a network
A network device is disclosed. The network device includes an incoming power port, an outgoing power port, an internal circuit, and a power storage system connected to the incoming power port, the...
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7149067 |
Automatic voltage device and network protector incorporating same
A voltage sensing device automatically scales the source and network phase voltages of a power distribution system having one of two operating voltages for input to a network protector relay and...
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7110232 |
Semiconductor circuit with protective circuit
A semiconductor circuit in a semiconductor substrate includes a first input for feeding a first supply potential, a second input for feeding a second supply potential higher than the first supply...
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7106566 |
Power adapter interface circuitry for protecting a battery operated system
An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage...
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7085117 |
EMC immunity improvements to USB interface
A USB interface having improved EMC immunity where the D+, D−, and USB ground lines each pass through a common mode choke. The USB 5 V line is AC coupled to the USB ground line outside the choke...
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7054123 |
Circuit configuration for identifying a fault state
To identify a fault state, for example, a break in a supply line, while maintaining operational reliability, a circuit configuration for identifying a fault state includes a first transistor of a...
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7049767 |
High voltage offset detection circuit and method
A high voltage offset detection circuit registers the voltage at the midpoint of a switching half-bridge to determine when the midpoint voltage reaches a given value to avoid hard-switching in the...
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7031128 |
Power circuit protection apparatus
A power circuit protection apparatus halting an operation of a pulse width modulation (PWM) controller when an abnormal state is generated due to an open or short in a secondary side winding of a...
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