Abstract: A method and a wind power plant are provided for smoothing alternating electric current from a number of power generators. Generators are electrically connected to an electric network. Each power generator includes a transformer with pulse width modulation for converting direct current to pulse width modulated alternating current for feeding to the network. The time for feeding the pulses of the pulse width modulated alternating current is different for each generator in order to achieve a more even alternating current as a sum of respective outputs of alternating current from the generators.

Abstract: A high frequency starter-generator system uses an electric machine design that does not employ rotating rectifiers installed on the rotor. The output frequency of such a starter-generator is increased by about 200% as compared with a conventional starter-generator with the same number of poles operating in the same speed range. This design allows significant weight and volume reductions of the electric machine while its reliability is increased. The present invention may find application in any starter-generator application, including more electric architecture-type aircraft designs currently in development.

Abstract: A method an apparatus for providing speed control in a spindle system are provided. The apparatus includes an air turbine spindle that rotates at a speed, an electromagnetic device coupled to the spindle for creating a torque to maintain a desired speed of the spindle, and a tachometer for generating a measurement of the rotational speed of the spindle. The electromagnetic device applies a torque to the spindle in response to the measurement to change the speed of the spindle to the desired speed.

Abstract: Power generation apparatus includes a wing-shaped blade having opposite sides, opposite ends and leading and trailing edges extending between those ends. A lift differential producing device in the blade produces a lift differential at the opposite sides of the blade and that device is switched so that one blade side or the other produces the greater lift. A blade shaft extends along an axis in the blade that is in close parallel relation to the leading edge of the blade and that shaft is fixed to move with the blade. Supports support the blade shaft so that the blade can be positioned in a fluid stream with the leading edge facing upstream and swing about the axis between first and second extreme positions on opposite sides of a neutral position, the blade shaft oscillating with the blade. A coordinating device coordinates the switching of the lift differential producing device with the swinging of the blade so that the switching occurs at the extreme positions of the blade.

Abstract: Provided is a circuit board based connector with raised projection section, which is formed by applying substrate bonding and formation techniques to make a connector that features a raised projection section. The circuit substrate has an end that is provided with conductive terminals and an opposite end that is provided with flat cable connection terminals for connection with a flat cable. The circuit substrate has a first surface on which the projection section is formed. A shielding layer covers the projection section and a portion of the first surface. The circuit substrate has a second surface on which a second shielding layer is selectively formed. When the circuit substrate is inserted into an insertion space defined in a connection socket with the conductive terminals thereof, the shielding layer and the projection section of the circuit substrate are put into engagement with and thus retained by the insertion space of the connection socket to thereby fix within the connection socket.

Abstract: An implantable medical device connector assembly and method of manufacture include a molded, insulative shell having an inner surface forming a connector bore, a circuit member including a one or more traces extending through the shell; one or more conductive members positioned along the connector bore and electrically coupled to the traces; and sealing members positioned between the conductive members.

Abstract: An electrical connector is provided and includes a housing having a pair of side walls defining a plurality of terminal grooves therein and a bottom wall connecting with said side walls and defining a top face facing upward. A plurality of terminals are received in said terminal grooves, each comprising a retaining portion and a contacting portion extending from the retaining portion, said contacting portion having a connecting portion cantilevered above said top face. The bottom wall defines a plurality of through holes running therethrough along a vertical direction and facing to an end of the connecting portion which is far away from the retaining portion, and said top face of the bottom wall extends slantwise from the through hole to the side walls therefore places adjacent to the through hole are lower than those adjacent to the side walls in said vertical direction.

Abstract: A fuel cell (10) has a compressed air inlet fed by a compressor (20) and a fuel inlet, and it produces direct current electricity. A turbine (30) receives a flow of gas under pressure from the fuel cell and is mechanically coupled to the first compressor in order to drive it. A second compressor (46) of a circuit for use in flight to feed pressurized air to the aircraft cabin (40) is mechanically coupled to a shaft of the turbine. An electric machine (50) may be coupled to the same turbine shaft as drives the compressor (46), the electric machine being capable of operating as a generator or as an electric motor.

Abstract: A battery connecter includes a plurality of terminals. Each of the terminals includes a resisting portion, a supporting portion, and a contacting portion. The resisting portion includes a first portion and a second portion bent from the first portion. The supporting portion extends from the first portion and resists the second portion. The contacting portion is bent and extends from the supporting portion. The invention also discloses a portable electronic device using the battery connecter.

Abstract: A communication jack has a housing with a face having a plug receiving aperture. A plurality of conductive path pairs extends from corresponding plug interface contacts located at the plug receiving aperture to corresponding output terminals. A first circuit board is connected to the plug interface contacts and a second circuit board is connected to the plug interface contacts and the output terminals. The first circuit board has a first single stage of crosstalk compensation with opposite polarity of the crosstalk of a plug for a first combination of the conductive path pairs. The second circuit board includes a second single stage of opposite polarity crosstalk compensation for some of the conductive path pairs not compensated on the first circuit board. The stages cancel substantially all of the crosstalk caused by the plug, for the signal operating frequencies, for corresponding combinations of the conductive path pairs.

Abstract: A connector includes an insert including contacts having free parts to receive homologous flat contacts of a plug. The insert further includes a rotation axis about which the insert can be rotated and spring means urging the insert toward the position that it assumes when no plug is present. The insert can include, at the sides, long curved contacts and, in a central portion, shorter curved contacts, the points of contact of the contacts of the insert with the flat contacts of a plug being substantially aligned over all the contacts.

Abstract: A connector includes an insulating housing, a metal shell that covers the insulative housing, and a switch. The switch includes a fixed contact and a movable contact. The fixed contact is formed by partially bending a rear end of a top surface of a metal shell downward. The metal shell covers an insulating housing to be mated with a mating connector. The movable contact extends while having a fixed end held by the insulating housing, and bifurcates at an approximate midpoint of the movable contact. The movable contact has, at one free end, an attachment section that abuts a mating connector approaching in a mating direction and a contacting section, at an opposite free end, that contacts the fixed contact when the attachment section is pushed by the mating connector.

Abstract: A connector holder has a U-shaped frame and supports an internal connector-receiving part within the U-shaped frame. Guide pieces are provided that grip the ends of a connector and the cable to which the connector is attached. The connector-receiving part thereby floats inside of the U-shaped frame so as to be positioned accurately for mounting to an opposing connector.

Abstract: A separable electrical connection may be provided with a landside pad on one of two electrical components to be joined. The landside pad may be made up of two parts, including a flat portion and a raised edge formed on the flat portion. In some embodiments, the raised edge may have a closed geometric shape. Then, a socket contact engaging the junction between the flat portion and the raised edge is prevented from sliding off of the landside pad by the raised edge. In addition, dual areas of electrical connection can be established between both the flat portion and raised edge of the landside pad and the correspondingly shaped pair of portions on the socket. This increases the electrical efficiency of the connection and its security.

Abstract: A connector adapted for receiving a longitudinally inserted flexible printed circuit board therein includes an insulating housing having a base board, a plurality of electric terminals disposed in the insulating housing and a pressing cover vertically movably mounted onto the insulating housing. Two opposite ends of the base board protrude upward to form a pair of sidewalls. Each of the electric terminals has an elastic arm. The flexible printed circuit board is inserted between the base board and the elastic arms. A portion of a base portion of the pressing cover extends forward to form a pressing portion transversely spanned over the elastic arms of the electric terminals for pressing the elastic arms downward against the flexible printed circuit board when the pressing cover is pressed downward to be closed so as to make the flexible printed circuit board tightly clipped between the elastic arms and the base board.

Abstract: The purpose of the invention is to reduce the contribution of wind power installations to frequency errors on the grid, and preferably to contribute to the elimination of such errors. Thus, the method involves the use of PID control and/or control with hysteresis so as to regulate the active power injected into the grid, in view of the deviation between a measured grid frequency and the nominal grid frequency.

Abstract: There is provided an apparatus 2 for generating electrical charge from a motive power source 3. The apparatus 2 comprises an alternator 3a and a worm drive assembly 4 connectable to the motive power source 3. The worm drive assembly 4 comprises a drive shaft 14 a worm gear 20; and, a worm wheel 32 configured so as to mesh with the worm gear 20 and as is further arranged so as to be operatively associated with the alternator 3a. During use, rotation of the drive shaft 14 by the motive power source 3 effects generation of electrical charge by the alternator 3a.

Abstract: In some embodiments, a circuit board interconnect may include one or more of the following features: (a) a first circuit board having a plated through hole within a metal pad on the circuit board, the through hole providing a passage for solder to connect the first circuit board to a second circuit board, (b) a second circuit board having a metal pad able to couple to the first circuit board in an overlapping fashion when solder is passed through the plated through hole, and (c) a non-conductive solder repelling material on a surface of one circuit board.

Abstract: Compensation schemes for a modular jack are provided according to the present disclosure. The compensation schemes advantageously include a first coupling of compensating crosstalk between a first pair of conductors and a second pair of conductors and a second coupling of compensating crosstalk between only a first conductor of the first pair of conductors and only a first conductor of the second pair of conductors, wherein the first and second couplings of compensating crosstalk are of opposite polarities. In exemplary embodiments, the first coupling of compensating crosstalk may be provided by a circuit board, such as a flexible circuit board including a plurality of interconnection elements, e.g., capacitors, for providing the first coupling of compensating crosstalk. Alternatively, the first coupling of compensating crosstalk may be provided by a plurality of plug interface contacts associated with the first and second pairs of conductors.

Abstract: A lever fitting type connector includes a male connector, a lever which is rotatably attached to the male connector, and a female connector which has a fitting space into which the male connector is inserted. The lever has a fulcrum protrusion provided on one end portion of the lever. An inner wall forming the fitting space of the female connector has a guiding groove portion and a receiving groove portion for receiving the fulcrum protrusion. The guiding groove portion extends in a fitting direction of the male connector with respect to the female connector from an upper end portion of the inner wall toward the inside of the fitting space. The receiving groove portion which is communicated with the guiding groove portion and extends in a direction intersecting the fitting direction from one end of the guiding groove portion which is away from the upper portion of the inner wall.