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8179652 |
Overvoltage protection element
An overvoltage protection element, with a housing, at least one overvoltage-limiting component in the housing, two connecting elements for electrical connection of the overvoltage protection...
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8159801 |
Switched hot swap controller
The invention describes an electric circuit (100), a method and a computer program for hot-swapping an electronic board in a telecommunication system, where the increase in current in the electric...
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8159802 |
3-phase power factor corrected AC to DC filtered switching power supply
This invention relates to a power supply apparatus and method for converting three-phase delta AC power to DC power using EMI filters and PFC circuits to maintain balanced AC current loading and...
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8138879 |
Thermal overload relay
A thermal overload relay includes main bimetals which bend upon detection of an overload current; a release lever displaced via movement of a shifter moved in response to the bending of the main...
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8089742 |
Overcurrent protection apparatus for load circuit
To provide an overcurrent protection apparatus which can surely protect a load circuit from an overcurrent with a simple configuration. Supposing that the temperature increasing amount of a...
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8068322 |
Electronic circuit breaker apparatus and systems
Electronic circuit breakers and systems for isolating a load from a power-supply unit are provided. One electronic circuit breaker includes a current sensor, a switching element coupled to the...
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8064180 |
Input-voltage-rate-of-change-dependent current-limit set point for hot-swap controllers
Certain example embodiments disclosed herein include an adaptive current limiter comprising a variable reference voltage generator which is coupled to a power source via two input nodes and which...
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8059377 |
Protection device, protection method using the same, method for processing signal using the same, and method for detecting quantity of electricity using the same
A protection device detects a temperature in a predetermined monitoring place in an electronic apparatus 3 to protect the electronic apparatus 3, and includes an oscillating circuit 20 for...
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8057094 |
Power semiconductor module with temperature measurement
A power semiconductor module with temperature measurement is disclosed. One embodiment provides a conductor having a first end and a second end. The second end is thermally coupled at a substrate....
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8050006 |
Method and system of providing overload and short-circuit protection for switched mode power supply
A method of providing overload and short-circuit protection for a Switched Mode Power Supply (SMPS). The method may rely upon sensing a temperature change rate for a component of the SMPS and...
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8049463 |
Stacked battery module and battery pack
A stacked battery module or a battery pack is formed by laying a plurality of unit batteries of non-aqueous electrolyte batteries in layers with the surfaces thereof having a large area disposed...
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8022578 |
Electric power supply cut-off circuit and liquid droplet discharge apparatus
An electric power supply cut-off circuit comprises an IC which outputs a normal operation signal when the IC is operated normally, a switch which makes connection or disconnection between the IC...
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7978452 |
Automotive overcurrent protection
Overcurrent is prevented in an automotive vehicle based on sensing at least one operating condition. An overcurrent threshold is determined based on characteristics of the load and on the sensed...
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7965527 |
Temperature protection device for electronic converters and related method
A device for protecting an electronic converter, e.g. for halogen lamps, includes a comparator having an output as well as non-inverting and inverting inputs for receiving a first input signal...
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7965475 |
Overheat protection circuit
An overheat protection circuit of a semiconductor apparatus has an output current detecting circuit for detecting an output current of a constant voltage circuit; a temperature detector for...
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7952461 |
Sensor element for a fault interrupter and load break switch
A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the...
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7940505 |
Low power load switch with protection circuitry
Load switches are relatively common and in use with a variety of applications, and conventional load switches have been designed to have continually operating protection circuitry, which can...
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7936541 |
Adjustable rating for a fault interrupter and load break switch
A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the...
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7911755 |
Circuit arrangement for electrically controlling power and cooling arrangement
A circuit that electrically controls power includes at least one power control device and at least one heat extraction device. The at least one extraction device is in thermal contact with the at...
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7907379 |
Overload protection for a circuit arrangement having a transistor
A drive circuit for a transistor and a method for driving a transistor are described.
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7889463 |
Fused lead wire for ballast protection
A ballast having fused leads protects against uncommon, but harmful, ballast failures. The fused leads prevent a current in the primary coil of the ballast from exceeding a potentially damaging...
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7885048 |
Semiconductor device and an electronic apparatus incorporating the semiconductor device
A semiconductor device and an electronic apparatus incorporating the semiconductor device are disclosed. The semiconductor device includes a power circuit that further includes a power transistor...
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7876545 |
Protection arrangement for protecting a power semiconductor component against overcurrent and overtemperature
A protection arrangement for a power semiconductor component made of a plurality of cells, in which a current sensor made of a current sense transistor and current sense resistors and also a...
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7835129 |
Circuit arrangement for overtemperature detection
The invention relates to a circuit arrangement for detecting the overtemperature of a semiconductor body. The arrangement comprises at least one field effect transistor, having a parasitic diode,...
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7835127 |
Driver device and liquid droplet ejection head
In a switch (mechanical switch) in a drive circuit, an electric potential according to the temperature of a driver IC is given to a gate electrode from a switch control circuit. During normal...
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7821376 |
Method for adjusting trip sensitivity of thermal overload protection apparatus
A method for adjusting a trip sensitivity in a thermal overload protection apparatus, including setting an adjusting reference point; measuring a normal position of bimetals; measuring a moving...
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7813094 |
Input-voltage-rate-of-change-dependent current-limit set point for hot-swap controllers
Certain exemplary embodiments disclosed herein include an adaptive current limiter comprising a variable reference voltage generator which is coupled to a power source via two input nodes and which...
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7808762 |
Semiconductor device performing overheat protection efficiently
A semiconductor device includes a constant voltage circuit configured to convert an input voltage to a predetermined voltage by controlling an output transistor, and an overheat protection circuit...
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7768759 |
Control circuit of semiconductor device having over-heat protecting function
A control circuit of a semiconductor device includes: a semiconductor element which supplies an electric power to a load; an over-heat protecting unit having: a temperature detecting section which...
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7746616 |
Protection circuit and method of protecting a load circuit
A protection circuit includes an interruption device formed to interrupt a current path between a protection circuit input and a protection circuit output upon exceeding a predetermined temperature...
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7742270 |
System and method for limiting energy in an industrial control system
A system and method for limiting energy to an industrial control system is described. The method includes receiving a supply voltage, limiting the supply voltage so as to generate a limited...
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7742305 |
Switching power supply unit
A switching power supply having at least one switch (S) controlled by a control circuit (AST), by means of which an input direct voltage (UV) is switched, whereby a thermal model (THM) is...
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7729148 |
Method for thermal protection of frequency converter and a frequency converter
A method for thermal protection of a frequency converter and a frequency converter includes means for controlling the output current of the frequency converter. The method includes the steps of...
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7719812 |
Power converters with rate of change monitoring for fault prediction and/or detection
A power converter includes a controller having at least one input for monitoring a rate of change of an operating parameter of the power converter. The controller is configured for comparing the...
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7713471 |
System for protecting circuitry in high-temperature environments
An electrical device for performing a particular function includes a system circuit for performing the function, and a dedicated power supply for providing power to the circuit. Both the system...
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7675721 |
Circuit interrupter including a shunt wire current sensor and a processor having a thermal overload predictive function
A miniature circuit breaker includes separable contacts, an operating mechanism structured to open and close the separable contacts, a microprocessor including a thermal overload predictive...
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7672106 |
Switching incandescent lamps and other variable resistance loads with a solid state, smart, high side driver having overcurrent and temperature sensing protection circuits
A circuit and method for controlling a smart, high side driver with current and temperature sensing so that it can turn ON a relatively high current load of incandescent lamps or similar loads...
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7626799 |
Microelectronic device equipped with a thermal protection circuit and thermal protection method for a microelectronic device
A microelectronic device includes a first circuit and a second circuit, coupled to the first circuit for selectively preventing operation of the first circuit when a device temperature is higher...
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7607827 |
Temperature detection device, temperature detection method, and computer-readable computer program product containing temperature detection program
Heating value P[W] generated at an IGBT is calculated, and a temperature difference ΔT′j [° C.] between a temperature Tw [° C.] of cooling water circulating in a cooling system and a temp...
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7586726 |
Switching element overcurrent protection circuit which operates within a high-voltage system that incorporates the switching element
A circuit for detecting excessive current flow through a switching element derives an electrical quantity relating to a condition of the switching element and correlated with the current level, and...
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7542259 |
Protection apparatus and method for protecting electronic system using the same
A protection apparatus adapted for providing thermal protection to an electronic system includes a thermal detection module and a comparator unit. The thermal detection module is configured for...
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7522397 |
Input/output interface with current sensing
An interface circuit includes an input terminal, a controlled current sink, a current measurement arrangement, and a logic circuit. The input terminal is configured to receive an input signal. The...
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7505241 |
Transient voltage surge suppression device
An integrated fuse device (1) includes a varistor stack (11), a thermal fuse (12), and a current fuse (13) within an enclosure (2) having device terminals (3). The varistor stack (11) is connected...
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7499253 |
Semiconductor integrated-circuit unit with temperature protective circuit
A temperature protective circuit of the semiconductor integrated circuit unit of the present invention is configured such that the circuit includes a heat generation detecting section for detecting...
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7498913 |
Thermal trip device and circuit breaker using the same
A thermal trip device in which a bimetal (2) is heated by overcurrent and performs trip operation of a circuit by curvature of the heated bimetal (2), wherein at least one part of the surface of...
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7492566 |
Low resistance transient blocking unit
A transient blocking unit (TBU) having reduced series impedance is provided. A TBU includes two or more depletion mode transistors arranged to provide a low series impedance in normal operation and...
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7480125 |
Constant voltage circuit, system power device and method of controlling system power device
A constant voltage circuit including an input terminal to receive an input voltage, an output terminal configured to output a constant voltage converted from the input voltage to a load and an...
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7468878 |
Low voltage output for an electronic ballast
A high frequency electronic ballast for main loads, such as an HID lamp, includes a regulated low voltage output to drive auxiliary loads. A low voltage microcontroller generates a low voltage...
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7468874 |
Protection circuit for digital power module
A sensorless protection circuit comprises a detection module. The detection module receives a reference voltage signal and receives a load voltage signal from a MOSFET. The detection module...
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7466083 |
Protective device for vehicle electronic apparatus
A protective device for a vehicle electronic apparatus, which includes an inverter for converting a direct-current voltage into an alternating-current voltage for the vehicle electronic apparatus,...
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