Matches 1 - 50 out of 105 1 2 3 >
Match Document Document Title
7054173 Circuit with DC filter having a link fuse serially connected between a pair of capacitors  
A circuit that includes a filter and a DC bus is provided that reduces the potential for failure of a second capacitor of the filter in the event a first capacitor shorts. The filter is...
6975489 Circuit structure and semiconductor integrated circuit  
A bypass capacitor having a given capacitance is arranged on the power/ground line adjacently to a driver circuit in a chip to reduce an effect of transient phenomenon at switching. The capacitance...
6919695 Overvoltage protection for hid lamp ballast  
The present invention relates to a device for operating a high-pressure discharge lamp, comprising a switched mode power supply circuit (SMPS) for supplying power to the high pressure discharge...
6912108 Protective equipment for a series-capacitor installation  
A series-capacitor installation intended to be placed on a platform, insulated towards ground, for connection into a power line (L) for carrying a line current (IL) has a first and a second...
6788166 Harmonic wave distortion suppressor  
A harmonic wave distortion suppressor includes a main body, at least a connecting pin and a coating. The main body is made of a first material and covered with a second material for absorbing an...
6753792 Distribution line capacitor monitoring and protection module  
A device comprising a fault detector and communications module. The communications module can transmit and receive information and data via a commercial two-way wireless system, which may include...
6567256 Dual protective relay for power systems  
The relay obtains three-phase current signals from two power line sources thereof, typically two independent feeder lines. The two sets of signals are processed by a single processing means, which...
6336059 Reach-measurement method for distance relays and fault locators on series-compensated transmission lines using local information  
A reach-measurement method is used in connection with a series-compensated line of a power system. The series-compensated line includes an installed series capacitance having a bus side and a line...
6223113 Default modes of a transmission utilizing electro-hydraulic clutches  
In machines having electro-hydraulic transmission controls, it is desirable to ensure that in the event of an electrical malfunction or power failure the transmission responds appropriately. In the...
6075378 Electrical energy storage capacitor power supply capable of shorting out defective capacitors  
There is disclosed a power supply for storing electrical energy in capacitors connected in series, the power supply having a function of shorting out capacitors at fault. Shorting means are...
5519563 Protection circuit for electric cells from overcharge and overdischarge using a plurality of detection units of a single chip type  
In a protection circuit for protecting a plurality of chargeable electric cells by detecting overdischarge and overcharge by detection circuits for respective electric cells to control a protection...
5510942 Series-capacitor compensation equipment  
This series-capacitor compensation equipment comprises a series-capacitor bank in series with a power line and an overvoltage protection circuit for the capacitor bank comprising the series...
5475272 Power capacitor  
A power capacitor (30, 40) composed of a plurality of parallel-connected strings (36) of capacitor elements (33,43), wherein each string comprises a plurality of series-connected capacitor...
5392184 Method and apparatus for relieving a capacitor of a controlled series compensator as a function of the load on its arrester  
A method and an apparatus for relieving a capacitor of a controlled series compensator as a function of the load on its arrester when high-current line faults occur. The current flowing through the...
5345161 Power supply system for an electromagnetic riveting apparatus  
The power supply, useful with an electromagnetic force apparatus such as a riveter or a bolt inserter, includes two capacitor banks which are charged through charging doubler modules. Each charging...
5325259 Overvoltage protection for series capacitor equipment  
An overvoltage protective device for a series capacitor (C) has a main spark gap and a first auxilary spark gap, arranged adjacent thereto, for ignition of the main spark gap. A second auxiliary...
5063340 Capacitive power supply having charge equalization circuit  
A capacitive power supply having a charge equalization circuit. The charge equalization circuit is comprised of a shunt circuit connected in a parallel connection with capacitive elements of the...
5016135 Power supply incorporating circuit breaker and fault detection circuit  
A power supply incorporating a fault detection circuit controlling a circuit breaker is described. The power supply is isolated from relatively large applied DC voltages. This isolation is provided...
4975796 Reverse discharge diode capacitor  
A device which enables a self-healing capacitor with more than one group of sections in series to undergo repetitive clearing without generating the resulting potential differences between the...
4956739 Device for locating internal faults in a high-voltage capacitor battery  
A device to locate internal faults in a high-voltage capacitor battery that has a plurality of symmetrically parallel and series-coupled capacitor banks arranged in parallel branches coupled by...
4926280 Capacitor protection circuit for protecting storage capacitors in an electronic power supply  
A capacitor protection circuit for protecting bulk storage capacitors in a storage capacitor circuit in an electronic power supply. The capacitor protection circuit is operatively coupled to the...
4922364 Series capacitor equipment  
Series capacitor equipment for distribution networks has a capacitor, voltage-dependent resistors as over-voltage protective means for the capacitor, a mechanical high-speed circuit-closer and a...
4860156 Overvoltage protective circuit  
A trigger circuit for a spark gap chain with at least two series-connected spark gaps, of which at least one is provided with at least one trigger electrode, includes a resistor chain which is...
4805063 Fault detector for detecting faults in a DC capacitor circuit  
A fault detector for detecting faults in a DC capacitor circuit connected to the DC buses of an inverter circuit using semiconductor device for converting direct current into alternating current to...
4750076 Geometric arrangement for filter capacitors  
A geometric arrangement for filter capacitors used in high frequency power supplies such that a multiplicity of paralleled capacitors not only share the current but also provide optimum filtering....
4703385 Protective circuit for series capacitor banks  
As overvoltage protection for a series capacitor (C1-C5) in a high-voltage network a voltage-dependent resistor (Z6), built up of metal oxide varistors, is arranged in parallel with the capacitor....
4669031 Light box for photographic use  
A photographic light box comprised of a housing having a side wall with a pair of opposed ends, one of the ends being larger than the other end and the side wall progressively increasing in cross...
4652963 Series capacitor equipment  
A series capacitor bank for connection into an electric power supply network is provided with overvoltage protective equipment having two branches connected in parallel with the capacitor bank. The...
4625254 Voltage trigger means for a series capacitor protector  
A linear resistor is serially connected to a voltage-dependent metal oxide varistor and the series-connected resistor elements are connected in parallel with the series capacitor of a high voltage...
4482930 Electrical protection equipment with digital integration apparatus for firing pulse initiation  
A non-linear resistor assembly protecting equipment such as series capacitors is itself protected by a bypass spark gap, the firing of which is produced by a digitized pulse train, each pulse of...
4432029 Protective means for series capacitors  
A protective means for a series capacitor in a high-voltage network comprises a voltage-dependent resistor (varistor) arranged in parallel with the series capacitor, a spark gap arranged in...
4405963 Capacitor apparatus with an individual discharge damping device for each capacitor unit  
An individual capacitor unit has an individual discharge damping circuit, which may be contained within the unit housing, that is connected between a capacitor stack connection and a terminal of...
4347539 Electrical equipment protective apparatus with energy balancing among parallel varistors  
Electrical equipment protection apparatus is provided comprising a plurality of varistor devices connected mutually in parallel, each of which exhibits a non-linear characteristic with an inherent...
4327390 Capacitive voltage transformers with electronic output  
A capacitive voltage transformer of the type having voltage divider capacitors and an electronic amplifier connected to one of the divider capacitors includes circuitry for isolating the voltage...
4295174 Multi-series group capacitor bank protection equipment  
A multi-series group capacitor bank has voltage limiters, of the metal oxide type, connected across each individual series group and set at a protection level higher than that of the bank bypass...
4259704 Protective circuit for zinc oxide varistors  
The invention provides an improved circuit for determining rates of rise of energy in metal oxide varistor devices. A high voltage transformer is employed to trigger a protective air gap for...
4187524 Series capacitor protection equpment with extended range dual sparkover feature  
Where multiple bypass circuits are provided across the protected equipment and have different sensitivity to overvoltages, the more sensitive trigger gap circuit branch is coupled to the high...
4164772 AC fault current limiting circuit  
Circuitry for limiting the instantaneous peak current, under fault conditions, of an AC power line, includes a high speed circuit breaker in series with a first capacitor in a main current-carrying...
4131826 Triggering circuit for triggered vacuum gaps  
An RLC triggering circuit employs an inductance coupled to the trigger electrode of a triggered vacuum gap device. A capacitance and a switch are coupled in series with the inductance. A diode in...
4121270 Series capacitor system with force firing of protective bypass device  
In a series capacitor transmission system the protective bypass device has a force firing arrangement responsive to an applied signal for causing the series capacitor bank to be bypassed rapidly,...
4090226 Relay protection for capacitor banks  
A capacitor bank is provided with a relay protection device having a number of measuring stations for sensing a number of different disturbances associated with the capacitor bank. Each respective...
4028592 Means for increasing the stability in high-voltage power supply networks  
Series capacitor blanks are inserted in high-voltage alternating current network systems in order to improve the stability of the system. Such capacitor banks are provided with a shunt-circuit for...
4012667 Protective device for series capacitor  
An overvoltage across each of N series capacitors is sensed by an individual overvoltage sensor through an associated current transformer and applied to a central control apparatus. Each capacitor...
4002947 Arcing stacked plate nonlinear resistor for voltage limiter applications such as series capacitor protection  
A stack of loosely touching resistive or conductive plates, such as a carbon pile, with a characteristic arc discharge voltage applied to limit voltage, enabling the lowering of protection levels...
3969655 Protective circuit arrangement for capacitor voltage transformers  
A protective circuit arrangement for a capacitor voltage transformer wherein a damping load is connected by switch means, following a voltage breakdown, to the secondary terminals of an...
3957329 Fault-current limiter for high power electrical transmission systems  
A fault-current limiter is formed as a self-contained unit which can be connected in an existing power transmission system. The fault-current limiter consists of a series-connected inductor and...
3944886 Protection apparatus for a capacitor connected in series with an electric power circuit  
A protecting apparatus for a series capacitor in an AC power circuit includes an enclosure filled with a low pressure insulating gas. A discharge gap device, a bypass switch for the series...
3919633 High voltage measuring device  
High voltage power lines are provided with a coupling capacitor for connecting carrier systems to the power line and for providing a voltage divider to indicate the line voltage. The coupling...
3889158 Series capacitor protection equipment with dual sparkover feature  
Multiple bypass circuit branches are provided across the equipment to be protected and have different sensitivity to overvoltages. Upon sparkover of the apparatus the most sensitive circuit branch...
3870926 Capacitor voltage transformer system  
A system for monitoring very high voltage e.g., 100 kv and above is provided in which a capacitor chain is connected across the voltage. An electromagnetic transformer feeding slow responding...
Matches 1 - 50 out of 105 1 2 3 >