Abstract: A VAR generator compensation system wherein the voltage of the capacitor or reactor bank is changed as a means of adjusting the phase angle is taught. Briefly stated a reactive bank such as a capacitor bank is connected to the secondary of an autotransformer such that the voltage of the reactive bank is controlled by the autotransformer. The line and load are connected to the primary of the autotransformer, such that changing the voltage of the autotransformer and hence the secondary voltage connected to the reactive bank, thus changes the VARS generated on the grid or system.

Abstract: An inductively coupled power distribution system for moving vehicles, in which resonating primary circuits to distribute power for resonating secondary circuits to collect and use in an optimized manner. In order to have all circuits resonating at substantially the same frequency, devices which detect and adjust resonating components are used, such as a frequency drift compensator in which the present frequency is compared to a reference voltage and causes a driver to be ON or OFF accordingly. Switches are driven CLOSED or OPEN respectively and when CLOSED, supplementary capacitors are included with a main capacitor in a primary resonant circuit. Dithering or pulsed control provides a continuous control of resonance, as the system takes some milliseconds to respond.

Abstract: The present invention relates to a stack device comprising a stack of gate turnoff thyristors GTO, of freewheel diodes DRL, and of diodes D, for a semiconductor circuit, said stack device including power supply electrical connection terminals +HT and -HT, and an output terminal PM, together with electrical connection terminals Cs and Cc between said diodes Ds and Dc and a protection circuit P, wherein the geometrical organization of the wiring of said electrical connection terminals +HT, PM, and -HT is predetermined so as to enable the disposition of said thyristors GTO and of said freewheel diodes in said stack to be modified in order to obtain different electrical functions for the semiconductor circuit.

Abstract: A high-density control circuit for an auxiliary resonant commutation pole (ARCP) circuit is internal to the ARCP package and includes a state machine sequencer for providing control and timing signals to achieve high-efficiency, zero-voltage, and fault-tolerant switching converter operation. The phase leg controller receives as inputs a phase enable signal and a pulse width modulation (PWM) signal from a system controller and gate drive feedback signals from main and auxiliary gate drivers. There are four paths the state machine sequencer can take when making a transition from one dc rail to the other, depending on whether the main diode or main switch is conducting and the magnitude and polarity of the inverter pole output current.

Abstract: An image processing apparatus includes a reading unit, a determining unit, a converting unit, a recording unit, and a control unit. The reading unit moves sensors corresponding to a predetermined number of pixels aligned along a sub-scanning direction in a main scanning direction to read an image having a predetermined width of an original. The determining unit determines an area designated by a marker in the original in accordance with pixel data of a pixel read by the reading unit and pixel data of pixels surrounding the pixel. The converting unit converts the pixel data of the pixel read by the reading unit in accordance with a determination result from the determining unit. The recording unit drives recording elements corresponding to the predetermined number of pixels aligned along the sub-scanning direction in accordance with pixel data from the converting unit and moving the recording elements in the main scanning direction to record the image having the predetermined width on a sheet.

Abstract: This invention may be used as a system in which a scanner for reading an original document and a recording apparatus are combined, and aims to provide an image information processing apparatus which facilitates the transportation of the system, and an image information processing system. A printer and a scanner can be mounted to each other by accurate positioning when positioning projections provided in the printer are engaged with positioning holes corresponding to the projections on the scanner side, and this mounting is fixed by the engagement of a hook on the scanner side with a recess on the printer side. In this mounted state, a transport passage, including a paper ejection port, for an original document or printing paper is formed, and motive power and electric power are supplied from the printer side to the scanner side via gears. In this state, an image on the original document is read, or an image is recorded on the printing paper.

Abstract: A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches.

Abstract: A voltage source type power converting apparatus having voltage source type power converter units and phase-shifting transformers. The transformers have either a common multiple-phase primary winding or a group of parallel connected multiple-phase primary windings, either of which being connected in parallel or series to a multiple-phase AC system. The transformer further include a group of multiple-phase secondary windings with phase differences with respect to each other and which are connected to voltage source type power converter units. The voltage source type power converter units are operated with the phase differences. Accordingly, the construction of the multiplexing phase-shifting transformer is simple, and fundamental electric variables can be controlled by a simple phase controlling operation. In addition, a higher harmonic defect of the AC system can be reduced, and the DC voltage can be easily raised.

Abstract: An integrated circuit and method are provided for generating current for low power applications. The integrated circuit preferably includes a current generating circuit responsive to a supply voltage for generating a first reference current and a temperature compensating voltage controlling circuit for generating a temperature compensated voltage control signal during temperature variations. A bias controlling circuit is preferably connected to the current generating circuit and the temperature compensating voltage control circuit for biasingly controlling the temperature compensating voltage control circuit. A current output controlling circuit is connected to the current generating circuit and the temperature compensating voltage controlling circuit for controlling a second temperature compensated reference current responsive to the temperature compensated voltage control signal so as to generate a high output source current even during low temperature conditions.

Abstract: A controller for an electrographic printer or copier for editing encoded image data by bundling the image data into work packets which are then processed independently of one another. A plurality of raster modules handle individual work packets independently of one another. The raster modules access a resources memory which contains information on fonts and images, for example. A central resources memory unit administers the process.

Abstract: The image forming apparatus includes a reading device or reading a document image and generating image signals, a memory for storing image signals generated by the reading device and an image forming device for forming an image on an image carrier according to the image signals stored in the memory. The image forming apparatus has a control unit for controlling the apparatus to include the state wherein the reading operation and the image forming operation are executed simultaneously in a series of operations ranging from the reading operation by the reading device of the image forming apparatus to the image forming operation by the image forming device and further, has a breaking key for breaking one of the reading operation and the image forming operation while both of these operations are being executed simultaneously.

Abstract: An apparatus for switch control of the slave SPS (switching power supply) in a SPS system is provided, with minimized number of the isolation devices, to trigger OFF state of slave SPS DC output signal free from residual voltage. In addition, the inventive apparatus for controlling the slave SPS switching is implemented on the secondary side of the slave SPS only, which eliminates the difficulty and unsatisfactory adjustments associated with the PCB layout process when implementing the invention.

Abstract: A method and apparatus for printing an image onto a photosensitive media. The apparatus includes an optical system having a light source for producing an exposure light; an imaging active matrix liquid crystal display through which the exposure light passes; a lens for focusing the exposure light passing through the active matrix liquid crystal display onto a photosensitive media; and a correction active matrix LCD is position between the imaging active matrix LCD and the light source for correcting non-uniformity in the optical exposure system.

Abstract: A power delivery system includes a circuit board, a power consuming module and a dc--dc converter. The printed circuit board has on it a first signal connector, a pair of first contacts to which a first voltage is supplied, spaced from said connector, and fasteners spaced from said pair of first contacts. The power consuming module has a second signal connector, mating with the first signal connector, and has respective upper and lower power pads for receiving low voltage power. The dc--dc converter converts the first voltage to a lower voltage. The dc--dc converter has a pair of second contacts contacting said pair of first contacts, surfaces mating with said fasteners and holding the converter on the printed circuit board such that said second contacts are in firm contact with said first contacts, and a laterally extending connector having upper and lower contacts supplying the lower voltage and engaging the upper and lower power pads of the power consuming module.

Abstract: A low voltage regulator integrated circuit for high speed/high frequency circuits incorporates a field effect transistor switch with a heterojunction bipolar transistor in order to reduce voltage requirements of the circuit and allow lower power voltages to be regulated. A first field effect transistor connects an unregulated power input terminal to a regulated power output terminal with a bias circuit including the heterojunction bipolar transistor provided to maintain conductance of the field effect transistor in regulating a voltage on the output terminal. A second field effect transistor can be included in the circuit to provide a power down or power saving mode of operation. An input voltage range of the voltage regulator is reduced from 3-3.5 V to 2-2.3 V using the integrated field effect transistor/heterojunction bipolar transistor device structure.

Abstract: Device including an input rectifying circuit 2 for effecting a full wave rectification on an AC input, and an output converter which includes a transforming device 11 having a primary winding 11a and a secondary winding 11b, the primary winding being connected through an inductor 16 with paired outputs of the input rectifying circuit, the secondary winding being connected through an output rectifying circuit with a load. Switching element 18 is controlled by a control circuit 20 to operate between ON and OFF states, and capacitor 19 is connected with the input rectifying circuit and the transforming device so as to be charged during the OFF state period of the switching element 18 through a charging circuit including the inductor 16, and to discharge during the ON state period through the primary winding 11a of the transforming device 11. The control circuit 20 controls the switching element to operate in an ON-OFF manner with a frequency faster than the frequency of the AC input.

Abstract: A matrix converter utilizes a bidirectional lateral insulated gate bipolar transistor (IGBT) including two gate electrodes. The IGBT can conduct in two directions. The matrix converter preferably is a three phase matrix converter including nine bidirectional IGBT switches. The IGBT switches are controlled by a control circuit which includes eighteen control lines, two for each IGBT. Additionally, the bidirectional IGBT can be used in a precharge circuit of a power inverter or in a dynamic brake associated with a motor controller.

Abstract: An integrated circuit package comprising an integrated circuit device and a voltage converter circuit both embedded within the package. The voltage converter circuit is configured to convert a standard supply voltage to an operating voltage as required by the integrated circuit device. Also, discrete embedded capacitors may be included to capacitively couple power and ground connections of the integrated circuit device and thus reduce voltage variations during operation of the integrated circuit device. The integrated circuit may package include one or more layers. One or more discrete components or integrated circuits are mounted to one or more layers within the package. Internal conductors on one or more of the layers are configured to connect the components forming the voltage converter circuit. Internal conductors also form connections to the integrated circuit device. The integrated circuit device and voltage converter circuit may be coated with an encapsulant for added protection.

Abstract: A digital copying machine including a scanner section for reading an image of a document and a printer section for printing on a sheet copy data obtained by the scanner section. The copying machine is connected via a communication line with a plurality of external terminals, for example, a personal computer or a facsimile apparatus. The digital copying machine is adapted to receive external data transferred from any one of the external terminals during the printing operation in copy mode for recording the image of the document, and to utilize a suspended period of the printer section for effecting the printout of the external data thus received.

Abstract: An image data output device for restricting the storage of inputted image data in a memory and successively outputting the inputted image data, when the residual capacity of the memory has reduced to a predetermined value while the image data are being stored in the memory. After the input of the image data has been completed, the image data stored in the memory are read out and outputted.