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WO/2014/058737A1 |
A crystal oscillator may be configured to limit crystal drive level in the crystal oscillator by clamping via a diode-resistor branch, voltage applied to a drain pad of the crystal oscillator. The crystal oscillator may incorporate Pierc...
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WO/2014/055959A1 |
Electrostatic discharge protection for Class D power amplifiers is disclosed. In an exemplary embodiment, an apparatus includes an amplifier having an output transistor coupled to an interface pad, a snapback supply clamp coupled across ...
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WO/2014/047409A1 |
A voltage limiting device for limiting the voltage being transferred from a trunk circuit to a spur circuit of a distributed control network includes an AC signal device that passes the AC data signals between the trunk circuit and the s...
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WO/2014/046899A1 |
A surge protection apparatus for a power cable assembly is disclosed. The surge protection apparatus is located in-line with the power cable and may be integrated into or be a separate component from the power cable assembly and provide ...
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WO/2014/044542A2 |
The invention relates to a line arrester (1), comprising a discharge column (2), which can be fastened to an overhead line (3) so as to hang. The discharge column (2) can perform an oscillating movement. A corona ring (4) connected to th...
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WO/2014/032965A1 |
A protection circuit (10) comprises a terminal (11), a reference potential terminal (12) and a protective structure (13) which is arranged between the terminal (11) and the reference potential terminal (12) and is designed to conduct in ...
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WO/2014/028979A1 |
An electrical protection device for a load having an external conductive surface; two input terminals connecting to active and neutral conductors; two output terminals connecting to the load, the load drawing a load current; a first moni...
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WO/2014/029542A1 |
A switching device (28) comprising a primary switching block (30) including at least one semiconductor switch (34); and a switching control unit (32) to control the switching of the or each semiconductor switch (34). The switching device...
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WO/2014/023116A1 |
A lightning filter and electronic equipment are provided. The lightning filter (1) comprises: an inductor connected in series with the transmission line inlet wire of a protected load circuit (2); and a non-linear voltage limiting elemen...
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WO/2014/021773A1 |
The invention concerns a device comprising a controllable grounding transformer (1 ) arranged to compensate for a residual operating current in grounding of an alternating- current network having a power transformer (3). A primary windin...
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WO/2014/019677A1 |
The invention relates to a reliable device for protection of voltage transformers from ferroresonant oscillation influences, with input terminals, power supply module, control unit, switching element and burden resistor. In order to enha...
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WO/2014/014733A1 |
An implantable medical device can include an integrated circuit comprising an electrostatic discharge (ESD) protection circuit. The ESD protection circuit can include an active circuit, a first passive circuit, and a second passive circu...
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WO/2014/007647A1 |
The invention provides a power surge protection apparatus which includes at least one large capacitor used within a surge protection circuit associated with an electrical load to be protected. This large capacitor or capacitors are arran...
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WO/2014/005747A1 |
The invention relates to an encapsulated surge protection device capable of carrying lightning currents and limiting follow currents and comprising at least one spark gap, which has in each case at least two main electrodes and one auxil...
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WO/2013/189314A1 |
A protection circuit of a communication interface comprises: a first-level protection circuit, a second-level protection circuit and a third-level protection circuit that are sequentially connected, wherein the first-level protection cir...
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WO/2013/189152A1 |
Provided are an electrostatic discharge protection circuit, an array substrate, and a display device, which are applicable to the field of display technologies and are capable of reducing a power consumption while improving reliability o...
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WO/2013/187293A1 |
The purpose of the invention is to improve the reliability of an ESD protection device having a plurality of discharge parts. An ESD protection device (1), provided with a plurality of input electrodes (21a-21d) and a plurality of output...
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WO/2013/187994A1 |
A power clamp circuit having improved robustness to electrostatic discharge (ESD) events includes a voltage regulation circuit and a current controlled switch. The voltage regulation circuit and the current controlled switch may be used ...
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WO/2013/176984A1 |
An electrostatic discharge (ESD) device implemented within a power domain to mitigate ESD events imparted from another power domain for reducing integrated circuit (IC) failures. A first power domain includes an interface where ESD event...
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WO/2013/174924A1 |
There are provided a load driver and a luminaire including the load driver. The load driver include a voltage limiting circuit including a first polar capacitor and a second polar capacitor connected in inverse series, which are connecte...
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WO/2013/174429A1 |
An apparatus (102; 202; 302; 502; 602; 702) for assisting or controlling the electric power transmission in a direct current power transmission system (802; 810; 830; 900) comprising at least one direct current transmission or distributi...
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WO/2013/167470A1 |
The invention concerns a device for protecting at least one electrical apparatus (2) against overvoltage generated by a lightning strike, the device comprising a connection socket (7) for connecting the device to a distribution socket (8...
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WO/2013/170270A1 |
A transient surge protector with discrete silicon avalanche diode arrays is closed. The transient surge protector comprises one or more pairs of stacks of discrete silicon avalanche diode arrays. Each diode array comprises three silicon ...
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WO/2013/166977A1 |
The present invention is applicable to the field of lightning protection, and provides a lightning protection device. The lightning protection device comprises: a lightning current band-stop filter, connected to a front end of a protecte...
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WO/2013/167199A1 |
A control circuit and a method for controlling a control circuit (1) is described. The control circuit (1) is connected to at least two electrical loads (2, 3, 4) connected in parallel. An electric melting metal fuse (5, 6, 7) is connect...
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WO/2013/163879A1 |
A clamping protection circuit is used for conducting clamping protection on a circuit to be clamped, and comprises: a first clamping diode (D1), a second clamping diode (D2) and a clamping device (CP). The first clamping diode (D1) and t...
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WO/2013/163853A1 |
A reactor-type short circuit fault current limiter, comprising a first reactor (L1), a second reactor (L2), a switch (K1), a capacitor (C1) and arresters (H1, H2 and H3). The first reactor (L1) consists of a first winding (L11) and a sec...
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WO/2013/161483A1 |
The objective of the present invention is to provide an output driver circuit of a simple circuit configuration that is equipped with an over-current protection function. The invention is made to be of a configuration in which a constant...
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WO/2013/159981A1 |
The invention discloses an earth-fault system, in which an earth fault can be established by means of a control device on the basis of measurement data. The control device then determines a value of an inductance of an earth-fault coil o...
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WO/2013/158383A1 |
Methods, systems, and apparatus for determining whether an accessory includes particular circuitry. A host device may measure a first voltage and a second voltage received from an accessory, where the voltages are provide through the acc...
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WO/2013/149575A1 |
Embodiments of the present invention provide a lightning protection circuit, a switching power supply and a lightning protection method, which are capable of preventing a high energy surge voltage of a terminal device from discharging to...
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WO/2013/145403A1 |
A power receiving device (200) of an electric power transmission system is provided with an overvoltage suppression means (70) connected in parallel to a resonance circuit (50). The overvoltage suppression means (70) is configured from a...
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WO/2013/142919A1 |
Described herein are fault current limiters including an input terminal for electrically connecting to a power source that provides an AC load current, and an output terminal for electrically connecting with a load circuit that draws the...
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WO/2013/147070A1 |
This semiconductor device is provided with a current control unit having variable conductance, and a control unit, which controls the conductance of the current control unit. The current control unit is connected to, in parallel to a loa...
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WO/2013/148535A1 |
Enhanced safety for an electrical appliance is provided by a circuit arrangement which removes power from a portion of the appliance, which if activated, could result in potentially dangerous conditions, while maintaining energization of...
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WO/2013/139382A1 |
A current control apparatus (10) for use in low, medium and high voltage applications, the apparatus (10) comprising first and second terminals (12, 14) for connection into an electrical network (20, 22, 24). The apparatus (10) also incl...
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WO/2013/140874A1 |
A power conversion device for outputting AC power having variable voltage and variable frequency, the power conversion device comprising: a forward converter for rectifying and converting AC voltage of an AC power source into DC voltage;...
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WO/2013/141429A1 |
The present invention includes an over-voltage removing unit that removes an over-voltage due to a lightning surge incoming from a plus terminal and from a minus terminal by using a common terminal connected to a ground terminal, an impu...
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WO/2013/134392A1 |
An electrical breakdown limiter circuit and method for a high voltage power supply includes an inductor having an inductor input and an inductor output wherein the inductor is electrically coupled in series between a high voltage output ...
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WO/2013/131897A1 |
The invention relates to a circuit assembly for the state monitoring and logging of overvoltage protection devices or overvoltage protection systems by means of pulse current monitoring, comprising at least one passive RFID transponder h...
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WO/2013/128148A1 |
A control circuit (20) comprising: first and second terminals (22,24) for respective connection to first and second power transmission lines (26,28); a current transmission path extending between the first and second terminals (22,24) an...
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WO/2013/128700A1 |
A control unit (20) of this power supply apparatus calculates a battery voltage on the basis of a capacitor voltage and a resistance value of a resistor (14) of a pre-charge circuit (13), said capacitor voltage having been detected by me...
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WO/2013/120259A1 |
An integrated circuit device (200) includes a first and second differential I/O pins (TRXP/TRXN) and a surge protection circuit. The surge protection circuit includes a protection transistor, a positive surge detection circuit, and a neg...
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WO/2013/120101A1 |
A low let-through voltage surge suppression or protection circuit for protecting hardware or equipment from electrical surges. During operation when no surge condition is present, the circuit allows propagation of signals from a source t...
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WO/2013/114602A1 |
Provided is an elevator control device with which, even if a protection circuit is not disposed between an inverter and a motor, it is possible, without increasing the size of an apparatus which is connected to a main line, to protect th...
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WO/2013/108651A1 |
Provided is an interrupt device for RF signal with a novel configuration which has a function capable of reliably cutting off an RF signal in the prescribed frequency range after an RF signal having an RF power value greater than or equa...
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WO/2013/107320A1 |
A surge protection circuit comprises an input end used for providing a DC power supply, an output end used for connecting a final-stage circuit (13), a shutdown circuit (11) connected to the output end, and a bleeder circuit (12) connect...
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WO/2013/104218A1 |
An electrostatic discharge (ESD) protection circuit and a display device comprising the protection circuit. The protection circuit comprises a first depletion mode thin-film transistor (31), a second depletion mode thin-film transistor (...
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WO/2013/104222A1 |
An electrostatic discharge protection circuit and a working method therefor, relating to the field of displays, for rapid discharge of an electrostatic charge while preventing discharge of a signal in the form of a leakage current. The c...
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WO/2013/072467A9 |
The invention relates to a method for disconnecting an electrical connection of an overvoltage protection element (12), intermediately connected between two connecting points (16, 18), from one of these connecting points (16), having a f...
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