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| Number | Title | Issue Date |
| 8184421 | Power converter The objective of the present invention is to provide a power converter capable of not only boosting the voltage but also shutting-off the flowing current, by switching only the switch element. The power converter 1, comprises a first input-output portion 3... | 05/22/2012 |
| 7414867 | Power conversion device An insulated gate bipolar transistor and a protective circuit are incorporated. The protective circuit has first and second Zener diodes connected in series in directions opposite to each other between the gate and the current sense terminal of the insulated gate bi... | 08/19/2008 |
| 7394264 | Device for non-dissipative measurement of the current in an inductor The invention relates to a device for measuring current in an inductor and being connected in parallel with said inductor. The device includes a network in parallel with the inductor and connected to the terminals A and B comprising a resistor R2 in series wi... | 07/01/2008 |
| 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 voltage higher than the battery voltage. First circuitry responsive to t... | 07/01/2008 |
| 7385795 | Cordless power tool with a protected weak link element A method consistent with an embodiment may include selecting one of a plurality of components of a power supply system of a cordless power tool to be a protected weak link element. The method may also include configuring the protected weak link element to fail from ... | 06/10/2008 |
| 7372685 | Multi-fault protected high side switch with current sense An integrated high side switch with multi-fault protection. When a fault condition is detected, the switch is turned off. The switch includes a pair of transistors that are connected such that the source of the first transistor is connected with the source of the se... | 05/13/2008 |
| 7362157 | Circuit arrangement with a transistor having a reduced reverse current A circuit arrangement is disclosed herein having an input terminal configured to receive an input voltage, and an output terminal to provide an output voltage for a load. A first transistor with a load path and a control terminal is connected between the input termi... | 04/22/2008 |
| 7358627 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 04/15/2008 |
| 7352202 | Method of Kelvin current sense in a semiconductor package Sensing current flowing through a semiconductor device includes providing an input pin to receive an input, providing an output pin coupled to a predefined voltage source, providing a control pin to receive a control signal for controlling a flow of current between ... | 04/01/2008 |
| 7336464 | Power limiting circuit A power limiting circuit is disclosed. The power limiting circuit includes a temperature sensing circuit that outputs a temperature signal that is proportional to temperature over a temperature range. The power limiting circuit also includes a regulation circuit cou... | 02/26/2008 |
| 7330342 | Safety tester having a high-voltage switching relay protected by an in-line electronic circuit breaker A multiple function safety compliance test instrument includes a high voltage output switching relay protected by a solid state in-line circuit breaker. ... | 02/12/2008 |
| 7330017 | Driver for a power converter and a method of driving a switch thereof A driver for a power converter, method of driving a switch thereof, and a power converter employing the same. In one embodiment, the driver includes switching circuitry referenced to a voltage level and configured to provide a drive signal for a switch referenced to... | 02/12/2008 |
| 7312653 | NMOS reverse battery protection A reverse polarity protected system comprises a voltage source that includes positive and negative terminals. A polarity-sensitive device has a first terminal that communicates with the positive terminal of the voltage source, and that includes a second terminal. A ... | 12/25/2007 |
| 7312716 | Wireless communication using an intrinsically safe design for use in a hazardous area A wireless circuit setup is used in a hazardous area where the circuit is intrinsically safe and does not require explosion proof containment. In this setup, an intrinsically safe master barrier (420) is used without the use of a resistor and one or more resi... | 12/25/2007 |
| 7304465 | Power supply circuit capable of efficiently supplying a supply voltage A power supply circuit generates a supply voltage based on an input constant voltage and supplies the supply voltage to a load. A delay circuit delays the input constant voltage. An output circuit generates the supply voltage from the input constant voltage delayed ... | 12/04/2007 |
| 7304828 | Intelligent solid state relay/breaker A solid-state relay/breaker that can replace mechanical units to control any type of AC or DC load. Power MOSFETs or other transistors control a load current. A bypass current sensing path monitors MOSFET current and causes a shutdown through signal processing in th... | 12/04/2007 |
| 7301129 | Control circuit for semiconductor device having overheating protection function A control circuit includes a drive circuit which applies a drive voltage to a semiconductor device having an overheating protection function according to an externally supplied signal; and a current detecting circuit which outputs a detection signal when a drive cur... | 11/27/2007 |
| 7302592 | Integrated circuit which disables writing circuitry to memory when the power drops below a power threshold predetermined and controlled by the processor An integrated circuit comprising a processor, non-volatile memory, an input for receiving power from a power supply and a power detection unit, wherein the integrated circuit is configured to enable multi-word writes to the non-volatile memory, the power detection u... | 11/27/2007 |
| 7278034 | Integrated circuit which disables writing circuitry to memory when the power drops below a power threshold predetermined and controlled by the processor An integrated circuit comprising a processor, a memory that the processor can access, a memory access unit for controlling accesses to the memory, an input for receiving power for the integrated circuit from an external power source, and a power detection unit, the ... | 10/02/2007 |
| 7259951 | Semiconductor device A semiconductor device comprises an output transistor for controlling current that flows between a first terminal and a second terminal, a detection transistor connected in parallel with the output transistor, a detection resistor connected in series with the detect... | 08/21/2007 |
| 7250772 | Method and apparatus for characterizing a signal path carrying an operational signal A method of characterizing a signal path includes (i) generating a reference spread-spectrum signal; (ii) coupling the reference spread-spectrum signal into the signal path while the signal path is carrying an operational signal; (iii) receiving a reflected spread-s... | 07/31/2007 |
| 7234756 | Exterior accessory module for vehicular modular door An exterior accessory assembly or module for a vehicle door assembly comprises an exterior rearview mirror and/or door cap assembly, which may further include a cover member, a door handle, window frame, window seal and/or an exterior rearview mirror assembly. The v... | 06/26/2007 |
| 7224155 | Method and apparatus for current limitation in voltage regulators A circuit for limiting a power current from a power-controlling pass device, the power-controlling pass device being coupled to a supply voltage, comprises the following. A sense device is coupled to the supply voltage with the sense device being configured to draw ... | 05/29/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7215524 | Protection device for power source and electronic device The present invention provides a power source protection device comprising a switching circuit and an overload circuit coupled between the switching circuit and power source for driving the switching circuit to limit current stopping the increase in the current outp... | 05/08/2007 |
| 7209334 | Auto adjustment of over current protection in degraded mode An information handling system having a power supply with automatic adjustment of over current protection for both normal and degraded modes of standby operation. A first over current protection shutdown value is used when the power supply cooling fan is operational... | 04/24/2007 |
| 7173801 | Protection circuit for faulted power devices A protection circuit for a control terminal of a power device of the type comprising at least one resistive element connected between at least one output terminal of a driver and the control terminal of the power device includes at least one turning-off transistor h... | 02/06/2007 |
| 7173405 | Method and apparatus for current limitation in voltage regulators with improved circuitry for providing a control voltage A circuit for limiting a power current from a power-controlling pass device, the power-controlling pass device being coupled to a supply voltage, comprises the following. A sense device is coupled to the supply voltage with the sense device being configured to draw ... | 02/06/2007 |
| 7170265 | Voltage regulator circuit with two or more output ports A dual output voltage regulator circuit is disclosed. The output voltage regulator has a first FET and a second FET. A current source responsive to the regulated output voltage provides a current drive to the gate of the first FET in a first mode of operation and to... | 01/30/2007 |
| 7164561 | Voltage regulator using protected low voltage devices A step down voltage regulator including devices designed to operate over a maximum rated voltage lower than the supply voltage. The regulator comprises an output regulation device coupled to the supply voltage and an output; and an output device protection circuit r... | 01/16/2007 |
| 7164320 | Current threshold circuit A current threshold circuit includes a series impedance, a reference voltage source, and a comparison module. The series impedance couples an output of a current source to a load, wherein impedance of the series impedance is substantially less than impedance of the ... | 01/16/2007 |
| 7155619 | Apparatus for resetting an IC of a separable extensive accessory based on connection status of an external portable device to the accessory A resetting device, of a separable extensive accessory, connected between a portable device and an IC arranged in a separable extensive accessory. By using a simple logic circuit, the resetting device will complete the resetting action of the IC arranged on the exte... | 12/26/2006 |
| 7139157 | System and method for protecting a load from a voltage source A field effect transistor (FET) is used as the protection circuit. The gate is grounded through an electrical element. The voltage source is connected to the drain of the FET. The load is connected to the source of the FET. At low input voltages, the FET conducts in... | 11/21/2006 |
| 7135359 | Manufacturing methods for large area silicon carbide devices Large area silicon carbide devices, such as light-activated silicon carbide thyristors, having only two terminals are provided. The silicon carbide devices are selectively connected in parallel by a connecting plate. Silicon carbide thyristors are also provided havi... | 11/14/2006 |
| 7135891 | Current sense shunt resistor circuit Current through a wire is sensed with a shunt resistor and a sense resistor in a current divider circuit. The values of the shunt resistor and sense resistor are related to provide a specified gain ratio to increase a dynamic range of current measurement. The sense ... | 11/14/2006 |
| 7130169 | Short circuit protection for a power isolation device and associated diode Short circuit protection is provided for an isolation component that has a parasitic diode as an inherent part of its construction. The isolation component may or may not be contained in an integrated circuit. In response to detecting a short circuit condition based... | 10/31/2006 |
| 7104663 | Memory mirror system for vehicle A vehicle memory mirror system of the present invention includes an interior rearview mirror assembly. The mirror assembly includes a mirror casing, with a reflective element, and a support, which is adapted to mount the mirror assembly to a vehicle. An electrical a... | 09/12/2006 |
| 7106037 | Switching-type constant current power supply device Disclosed is a switching-type constant current power supply, which comprises an alteration circuit 9 provided on the output side of a power conversion circuit 3 together with a voltage detection circuit 7, and a feedback circuit 8 provide... | 09/12/2006 |
| 7099128 | Fault condition protection A circuit protects a power conversion system with a feedback control loop from a fault condition. The circuit has an oscillator having an input for generating a signal with a frequency and a timer connected to the oscillator input and to the feedback control loop. T... | 08/29/2006 |
| 7091633 | Current-limiting logic interface circuit A circuit of interface between a logic sensor and a logic input isolation barrier of a processing circuit, including an element of protection against input overvoltages, a current-limiting circuit connected in series between an input terminal and an output terminal ... | 08/15/2006 |
