Abstract: Fault-tolerant radial flux rotary electric machines are provided. One such machine comprises: a permanent magnet rotor having fourteen poles; and an alternate-wound stator having sixteen slots and four coil pairs, each coil pair forming part of one of four independent electrical phases.

Abstract: A translated media generating and editing system generates playback of audio data in alignment with translated text that has been automatically translated from either a prior translation or a transcription of the audio data.

Abstract: A translated media generating and editing system generates playback of audio data in alignment with translated text that has been automatically translated from either a prior translation or a transcription of the audio data.

Abstract: An electrical machine has a stator with windings, first and second rotors, and an electrical output regulator. The first rotor carries alternating polarity first field magnets, such that, on drive mechanism rotation, the windings interact with the magnetic flux produced by the first magnets to create an EMF. The second rotor carries alternating polarity second field magnets, and has first and second rotational positions to reduce and increase, respectively, the magnetic flux energy. The electrical output regulator regulates a current from the windings to produce a torque on the rotors, as the drive mechanism increases from zero rotational speed, the torque rises above a threshold level that moves the second rotor from the first to the second rotational position, and, as the drive mechanism further increases the rotational speed, the torque peaks and then drops below the threshold level to move the second rotor back to the first rotational position.

Abstract: A switched reluctance generator and devices and methods for its control are concerned with generators and controls which can operate in an aerospace environment. The generator may have: a rotor having rotor poles; a stator having stator poles; and a controller. Either the rotor or stator poles each have windings to which current can be supplied to energise the poles and from which current can be drawn to a load; and the controller is arranged to: periodically excite each of the windings in turn to a pre-determined level of current; measure the current generated in each winding; cease the excitation when the current generated in each winding exceeds the excitation current; and direct the generated current in each winding to the load. The generator may thereby avoid the need to determine the position of the rotor poles relative to the stator poles to provide the commutation of the generator.

Abstract: A solid state power control apparatus includes: (a) at least one IGBT and at least one FET, for supplying current to a load, and (b) a current controller for shutting off the IGBT and FET. The current controller is arranged to start shut off of the IGBT before it starts shut off of the FET. Further, the current controller is arranged to reduce current flow prior to start of the turn off of the IGBT and FET.

Abstract: A method comprising identifying a user account associated with a user, the user account referencing at least one third party user account associated with the user, receiving, by an apparatus from a separate apparatus, circumstantial information that is indicative of a user context of the user, determining the user context based on the circumstantial information, determining that the user context is classified by at least one user context classification that is associated with the third party user account, sending information indicative of the third party user account and the user context to a third party server, the third party server being associated with the third party user account, receiving a third party proposition from the third party server, and sending, to a user apparatus, the third party proposition in response to the receipt of the third party proposition is disclosed.

Abstract: Devices, systems, and methods are described for allowing a user to transfer information at desired levels by providing the user with real-time feedback regarding the level of information that has been transferred. The devices, systems, and methods establish a communication link with a target device, cause information to be transferred to the target device via the communication link, and cause an indication of a level of the information transferred to be provided to a user during transfer of the information such that the user is provided with a real time indication of the level of information that has been transferred prior to transfer of a maximum level of information that is transferable.

Abstract: Devices, systems, and methods are described for allowing a user to transfer information at desired levels by providing the user with real-time feedback regarding the level of information that has been transferred. The devices, systems, and methods establish a communication link with a target device, cause information to be transferred to the target device via the communication link, and cause an indication of a level of the information transferred to be provided to a user during transfer of the information such that the user is provided with a real time indication of the level of information that has been transferred prior to transfer of a maximum level of information that is transferrable.

Abstract: A compensation circuit is provided for use in a drive arrangement for an isolation transformer in series with a capacitor. The compensation circuit applies a compensation voltage to the capacitor such that the voltage across the capacitor remains substantially invariant.

Abstract: A switching circuit controls at least one semiconductor switch TR1 using drive signals generated from logic circuitry 4 that generates complementary drive signals on an upper and lower drive path. Validation circuitry is provided between the logic circuitry and the semiconductor switch that inhibits any uncontrolled switching of the semiconductor switch TR1 due to noise, such as lightning strike, appearing at the load.

Abstract: Solid state switching devices, such as power IGBT's, are used to switch a load from one AC generator to another. The switching is controlled to occur only when the phase and voltage of the two generator outputs are within acceptable limited, thus minimizing voltage and current transients.

Abstract: A switching circuit controls at least one semiconductor switch TR1 using drive signals generated from logic circuitry 4 that generates complementary drive signals on an upper and lower drive path. Validation circuitry is provided between the logic circuitry and the semiconductor switch that inhibits any uncontrolled switching of the semiconductor switch TR1 due to noise, such as lightning strike, appearing at the load.

Abstract: A contactor includes a switching circuit for switching a load between one or more electrical supplies, a current detector for detecting the current flowing through the load, a trip circuit for tripping the current after an interval of time which depends upon how much the current flowing through the load exceeds a predetermined amount, and a pre-trip circuit for providing an indication during said time interval that the current exceeds said predetermined amount for providing ‘pre-trip’ or ‘near-trip’ information.

Abstract: Solid state switching devices, such as power IGBT's, are used to switch a load from one AC generator to another. The switching is controlled to occur only when the phase and voltage of the two generator outputs are within acceptable limited, thus minimising voltage and current transients.

Abstract: A contactor comprises a switching circuit for switching a load between one or more electrical supplies, a current detector for detecting the current flowing through the load, a trip circuit for tripping the current after an interval of time which depends upon how much the current flowing through the load exceeds a predetermined amount, and a pre-trip circuit for providing an indication during said time interval that the current exceeds said predetermined amount for providing ‘pre-trip’ or ‘near-trip’ information.

Abstract: A power switching circuit includes first and second semiconductor switches providing parallel paths connecting a load across a power supply. A circuit maintains the second switch in an off state except when the current in the first switch exceeds a predetermined value.

Abstract: A stepper motor control circuit includes a waveform generator circuit which produces two identical substantially stepless symmetrical waveforms (preferably a triangular configuration) at a frequency which can be varied on demand. Each waveform is used as a current demand signal for a pulse width modulator with a push-pull output stage controlling current in the motor windings. The pulse width modulator runs at a fixed frequency an order of magnitude higher than the maximum required stepping frequency. A current sensing resistor provides a feed-back signal which is fed back to input of the modulator to balance the demand signal.