Abstract: The arrangement has a motor (16) which has an electronic commutator and during operation is supplied from alternating current (AC) mains (L, N) via a rectifier (52) connected thereto, and a direct current (DC) link (22, 58) connected to said rectifier (52) and having a DC voltage (UZK) of greater than 100 V. The motor has an arrangement (25, 27) fed from said alternating current mains (L, N) via a transformer (24) and for supplying electronic components (14, 20, 26) of the motor with a DC voltage, and a user interface (12) provided for transmission of data to or from the motor (16). Said user interface, with which a current supply (24b) electrically isolated from the motor (16) is associated, electrically isolated from the motor (16).

Abstract: The invention relates to a method for adjusting a real value (actual value) of a physical quantity to a preset value (target value) with the following steps:(a) the difference between the target value and the actual value (referred to below as the control deviation) and its sign (referred to below as the control sign) is determined repeatedly at interval; (b) the control deviation is converted into at least one electrical signal during or after each measurement, and the duration thereof (referred to below as the control deviation duration) is proportional to the absolute value of the control deviation at least in the range of the target value, and the value thereof is a function of the control sign; (c) the charge of an analog electrical memory arrangement is affected by this at least one electrical signal during the control deviation duration; (d) depending on the value of the charge of the memory arrangement, the physical quantity is directly or indirectly affected to keep it in the range of the target valu

Abstract: The present invention relates to an electric motor having a winding support (9) for the windings of the motor stator. The winding support is formed with a cylindrical coaxial space having a first end (16) which is at least partially closed and a second end (14) which is open. A plurality of regularly spaced bars (10) are formed on said winding support (9). Certain of the bars, preferably alternate ones of the bars, are formed with an elongated, outwardly extending projection, adapted for placement thereon of a generally oval winding of the motor stator. Preferably, the partially closed first end (16) has a central opening, into which a bearing (7) for the rotor shaft (4) or a stepped end of a split bell can be inserted.

Abstract: An arrangement with a electronically commutated motor (10) with a permanent-magnet rotor (14) is supplied with DC power from an AC supply (28, 30) via a rectifier (44) connected thereto and a DC link (46,52) connected to said rectifier (44). It has an arrangement (60, 64, 66, 68, 70) powered from the AC system for supplying power to the electronic control circuit (16, 18) of the motor (10), supplying a DC voltage at its output which is lower than that on the DC link (46, 52). To the latter is connected a series controller (76) for alternative power supply to the electronic control unit (16, 18) of the motor (10) which contains a control transistor (78) operating as a variable resistor which, at normal voltage, is blocked at said output (72, 46) and is activated when the voltage is excessively low, so that the electronic control unit (16, 18) can be powered from the DC link (46, 52).

Abstract: A rotating joint for pressure hoses has a plug-in part (1) with a hollow pin (4) that projects into and is sealed against a receiving part (2). The rotating joint also has a rolling bearing, in particular a ball bearing, that has an outer race joined to the receiving part (2) and a inner race joined to the plug-in part (1), as well as two coaxially-arranged elastically biased angular ball bearings (K1 and K2). The angular ball bearings are biased by a thrust collar (21) under pressure, which is slipped onto the hollow pin (4) coaxially to the receiving part (2).

Abstract: In the combination of a video signal coder and a video signal decoder, synchronization is achieved by the addition of absolute time reference signals at the coder. These time reference signals are independent of the time base of the coder and are inserted after the coder buffer. At the decoder, the time reference signals are stripped out and used to set the decoder time base.

Abstract: A memory device, e.g. a capacitor, is provided for a collectorless DC motor. This component is charged whenever a particular rotor position is reached. In so doing, a voltage value or quantity on this memory device is changed. This quantity is compared to another quantity, which is dependent on a desired parameter, e.g. ambient temperature or gas or dust concentration. A reference signal is produced when a particular reference criterion is satisfied. The difference between the beginning of this reference signal and a second predetermined rotor position, which follows the initial predetermined rotor position with respect to time, is measured, and on the basis of this measurement, the current flow of the collectorless DC motor is influenced or regulated. In particular, the current can be toggled on and off as the rotor passes certain predetermined positions.

Abstract: A broadcast receiver is disclosed which separates 16-bit binary program labels from a transmitted television signal and applies the television signal to a recorder. The viewer enters, via a keyboard, short program labels which up to three decimal digits in length. These entered short labels are then converted into 16-bit binary program codes by a mapping function processor. Each of the 16-bit codes differs in at least two binary positions from any other 16-bit codes. These codes are stored and compared with received codes and when they agree the video recorder is controlled so as to record the TV signal. Thus, the viewer does not have to enter long codes but can use short labels to identify the programs. The short labels can be obtained by the viewer from a printed TV listing.

Abstract: The present invention relates to image forming device such as copying machines and laser printers, which use an electrophotographic (xerognaphic) process. A simple control method without using any additional complex means can equalize a surface potentional of a light-sensitive drum to keep a light-quality of an image formed even for the first rotation of the light-sensitive drum. A charge-removal prohibiting means, a charge-potentional changing means and a developing bias-potentional changing means are controlled in accordance with an extent of a change of a surface potential of a light-sensitive body, which depends upon a light fatigue and an ambient temperature of the light-sensitive body and/or a pause after a preceding image process.

Abstract: The present invention relates to a system which permits securing an electronic label on a test tube with the aid of a detachable support. The support allows also an easy connection between the label and a device for reading/writing the label, allowing a registration of the entirety of useful information of, for example, a blood analysis and a transfer of content of the label to a computer-assisted data base for data-treatment and storage.

Abstract: The invention relates to a planar antenna 1 having surface resonators 5, which are connected via a supply network 6 to a supply point 7, the supply point 7 of the planar antenna 1 being connected via a coupling element 13 to an electronic circuit 12, particularly a converter, the coupling element 13 being a coaxial conductor in which the ratio, between the outer diameter of the inner conductor and the inner diameter of the outer conductor 17, changes between the supply point 7 of the supply network 6 and the terminal 11 of the electronic circuit 12.

Abstract: The invention relates to a roof tile/roof slate/wall plate 1 made of a plate of clay, ceramic, concrete, fiber cement or synthetic, serving as a carrier for a solar panel 6 with photovoltaic solar cells 7 to be attached to its upper side where said solar panel 6 is attached form-fittingly to the upper side of the roof tile/roof slate/wall plate with at least two sides opposite to one another at the inner edges of a recess of a roof tile/roof slate/wall plate indent, and where the extensions 5, due to their own flexibility, are engaged in a snap-in manner particularly form-fittingly in recesses 4 of the roof tile/roof slate/wall plate indentation 2.

Abstract: A method for preparing an electrophotographic printing-use developer by mixing components of toner material, fusing and kneading the toner material, and then crushing and classifying the toner material, includes the step of arranging carbon black which is one of the components of the toner material to contain water before the mixing step. This arrangement permits even dispersion of water in the mixture of the components, prevents the flowability of the mixture from being lowered, and achieves stable kneading. Therefore, improved dispersion of the components is achieved. Since water adsorption is stable, water-treated carbon showing reduced water segregation is obtained. Consequently, high quality less foggy images with high resolution are obtained.

Abstract: The invention relates to a sequin delivery system (1) for embroidery and/or sewing machines, in which a pusher (6) delivers sequins (3) from a sequin strip (2), which is at least partly guided laterally, in increments to a needle penetration point (24). A drive mechanism periodically moves the pusher (6) toward and away from the needle penetration point (24), and the pusher (6) has a slaving device, which on the motion of the pusher (6) in the direction of the needle penetration point (24) engages a hole (4) in a sequin (3). The pusher (6) is at least partially elastic, and in particular is a leaf spring, and presses the sequin strip (2) against a contact pressure plate (8).

Abstract: The invention pertains to a double press for forging round or edged bar-shaped workpieces using two presses set at 90.degree. to each other, each having a pair of forging tools (A1, A2, B1, B2) that hydraulically work pairs I and II of the forging tools being driven alternatingly and each of the pump assemblies (5,6) being connected on its delivery side to a piston-cylinder unit (1,3) of a forging tool (A1, A2) of the one pair I and on its suction side to a piston-cylinder unit (2,4) of a forging tool (B1, B2) of the other pair II, and with the main lines (21, 22, 23, 24) between the pump assemblies (5,6) and the piston-cylinder units (1, 2, 3, 4) being free of valves. The delivery direction of the pump assemblies (5,6) is reversible, so that the pumps' delivery and suction sides change with a reversal of the delivery direction.

Abstract: A color display device includes a display medium; a display-side substrate including electrodes for driving the display medium; a counter substrate opposed to the display-side substrate with the display medium therebetween and including electrodes or driving the display medium; a first absorptive color filter provided on the display-side substrate; a second reflective color filter provided on a face opposite to the display-side substrate of the first color filter for reflecting light having a complementary color of light transmitted through the first color filter; and reflecting means provided on a face opposite to the first color filter of the second color filter.

Abstract: An improved motor for driving a variable-speed fan used, for example, to prevent overheating of electronic equipment, features an electronic controller which sends current pulses through the stator winding(s) of the motor, and varies the slope of trailing edges of these pulses in accordance with at least one sensed operating parameter of the motor, such as temperature of the power semiconductors which control the motor current. The slopes are steepened at high motor speeds to reduce electrical losses, and flattened at low motor speeds to minimize noise. Another feature of the improved motor provides for fail-safe, high-speed operation of the fan when the sensed value of the operating parameter is implausible, for example when a lead from a temperature-dependent sensing resistor breaks. In a preferred embodiment, a bridge circuit is used, which includes a transistor in one diagonal of the bridge circuit.

Abstract: An improved educational calculator permits sequential display of equations as transformations are made to solve the equations.First simultaneous linear equations are entered, and each time an advance key is depressed, process equations, obtained by transforming the equations step by step to reach their answers, are successively displayed on a liquid-crystal display screen. Each time a return key is depressed, the process equations are successively displayed from the answers to the equations in a reverse manner. The problem-solving method is selected through the entry of a solution key among the addition and subtraction method, the substitution method and the equivalence method, which are learned in the junior high school. The sequential display mode of the process equations can be switched between the automatic sequential display and the display on the basis of each entry of the advance key and the return key.

Abstract: The present invention provides a liquid crystal display device including a pair of electrode substrates and a display medium sandwiched between the electrode substrates and including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall. In this liquid crystal display device, the polymeric wall is tightly attached to both the electrode substrates. Furthermore, the invention also provides a method for producing a liquid crystal display device including a pair of electrode substrates, at least one of which is transparent, and a display medium including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall and sandwiched between the electrode substrates.

Abstract: The present invention relates to an electronic label comprising typically a EEPROM-like memory device. Said label comprises electro-optical cells, allowing a power supply of the label when light hits said cells. Electro-optical components allow further to receive optical command signals and to transmit optical signals to the exterior, which light signals relate the content of said memory device.