Abstract: In integrators which integrate the analog photocurrent of a photodiode (PD), the amplification-bandwidth product is relatively small on account of the parallel parasitic capacitance (Cp) of the photodiode (PD). However, in a design with a switched capacitor (C1), the bandwidth and at the same time the DC amplification must be large, so as to assure the integrator function even at low frequencies. So as to fulfill both of these mutually contradictory requirements for large bandwidth and high DC amplification, a reference voltage (V1) is present at a voltage divider that includes a resistor (R2) and a circuit section (R1) connected in series thereto, as well as at the photodiode (PD). The connection point of the voltage divider is connected to the inverting input of the transconductance amplifier (V). In a preferred embodiment, the circuit section (R1) is realized as a switched capacitor (C1), and the resistance (R2) is realized as an MOS transistor (T1).

Abstract: The present invention relates to a cutting device for cutting straw and similar material into pieces, of the type which comprises a driven shaft (11) kept in a housing (21), where said shaft (11) is provided with longitudinally proceeding rows (1-6) of knife attachments for knives (15), which extends radially from the shaft and are provided with cutting edges. Said knives (15), under operation pass between a row of counter knives (19) directed towards said shaft and preferably provided with cutting edges in the same way, whereby the straw material to be cut is fed towards said counter arms (9). The number of rows (1, 2, 3, 4, 5, 6) with knife attachment (14) are at least six. The distances between three knife attachments in a longitudinally proceeding row, have a proportion of 4:4:5 of a repeating unit, where the arms (4,5) in a rotation round at least forms two screw lines.

Abstract: A circuit used for testing an integrated circuit including a chop circuit. A source of a test signal coupled to a first pair of pins of the integrated circuit. A test signal measuring device to measure the test signal coupled to a second pair of pins of the integrated circuit. A chop circuit controller produces a control signal and for feeding such control to the chop circuit and the test signal measuring device. In response to the control signal, the chop circuit couples the first pair of pins to the second pair of pins with a first polarity during a first period of time and couples the first pair of pins to the second pair of pins with an opposite polarity during a second period of time.

Abstract: An automatic portable ambulant miniaturized system for applying pneumatic pressure to a body limb including a portable ambulant hand-held fluid source unit, a conduit for delivering fluid generated by the unit, and a sleeve coupled to the conduit and adapted to envelop a body limb. The sleeve contains one or more individually inflatable cells, each cell being subdivided into two or more longitudinally extending confluent compartments along the axis of the body limb. The compartments are inflated and deflated essentially simultaneously by the portable fluid source unit.

Abstract: A nonwoven battery separator which comprises a nonwoven, the nonwoven formed from a plurality of fibers and at least one high solubility parameter polymer, which polymer forms an encapsulation sheath around the fibers. The encapsulation sheath optionally has pores of about one micron or less and the separator is characterized in that it has a surface pore size of at least five microns.

Abstract: An integrated circuit for decoding an analog audio signal includes a tuner that receives the analog audio signal and provides a sound intercarrier frequency signal. A digital demodulator receives and digitizes the sound intercarrier frequency signal to provide a digitized sound intercarrier frequency signal, and digitally demodulates the digitized sound intercarrier frequency signal to provide a digitized multichannel television sound (MTS) demodulated signal. A digital broadcast television system committee (BTSC) compatible decoder receives and decodes the digitized multichannel television sound (MTS) demodulated signal, and provides a summed (L+R) audio output signal and a difference (L−R) audio output signal.

Abstract: A finger ring comprising a generally circular band defining a finger receiving opening. The band has a radially outwardly open window. A jewelry piece is removably received in a displayed position within the window. A pair of levers is rotatably supported on the band on opposite sides of the window. The levers have inner and outer segments and are rotatably adjustable between open and closed positions. In the open position the inner segments protrude into the finger receiving opening and the outer segments are removed from the window to thereby accommodate insertion and removal of the jewelry piece into and from the displayed position. In the closed positions the inner segments are removed from the finger receiving opening and the outer segments extend into the window to mechanically engage and retain the jewelry piece in the displayed position.

Abstract: A method for annealing and galvanizing wires which comprises induction heating the wires in a first chamber at a first higher temperature to anneal the wires, cooling the wires to a second lower temperature in a second chamber and galvanizing the wires in a third chamber. The chambers are in serial communication and the heating, cooling and galvanizing steps are effected in an oxygen free atmosphere.

Abstract: A folding sawhorse of the type comprising two trestle like frames that are hingedly connected at their tops. The shelf is hingedly attached to a lower strut of one frame and slidably attached to the legs of the opposite frame. The slidable attachment is by means of pairs of pins that are secured to one end of the pivoting shelf and are also yoked to longitudinal ridges that are in the legs of the opposite frame. To open the sawhorse from its closed, storage position, the frames are spread apart slightly, thereby allowing gravity to pull the shelf downwardly and concurrently causing the frames to spread outwardly to their open, working position. The sawhorse will stay in this locked open position without any additional latching mechanisms until the close procedure is initiated.

Abstract: A feed-forward amplifier and a controller thereof. Two types of second pilot signals, sum frequency and difference frequency of a base pilot signal and a local oscillation signal, are generated by an injection-side mixer and injected into a distortion detection loop. Part of a signal appearing at an output terminal is branched, converted in frequency by a detection-side mixer using the local oscillation signal, filtered by a narrow-band filter, input to a synchronizing detector with the filtered output of the filter as error signals, and synchronizing detected with reference to the base pilot signal so as to generate control signals for a distortion rejection loop. The spectrums of the second pilot signals may be spread. A process to cancel the input signal component at the detection side may be performed. A simple circuit configuration enhances the distortion component rejection and suppression effect and shortens the time required until an optimum control state is established.

Abstract: The present invention relates to a load carrier for motor vehicles, which load carrier is designed to be attached to a tow bar device mounted at the rear of the vehicle and which is equipped with additional, electrical lights supplementing the original lights of the vehicle, said load carrier arranged to be at least partly moveable to an aside open position in order to allow opening of a rear door on the vehicle. The novel features are that the opening position may be assumed with the aid of an electric motor (10), that the engine current supply is obtained from one of the pins of the regular switch of the tow bar device of the vehicle, and that its transmission is reversible by means of an electric reversing device.

Abstract: A circuit for biasing an FET, comparing a gate bias voltage of the FET with a reference voltage at an operational amplifier and performing closed-loop control on the gate bias voltage of the FET with the output of the operational amplifier. The temperature characteristics of the mutual conductance of the FET is compensated by setting the temperature characteristics of one or both of two voltage dividing resistors. Variations in a drain bias current due to input signal level and temperature changes can be suppressed. The circuit at the gate and the circuit at the drain are separate, making possible class A, class AB, and class B operations. The voltage drop at the gate resistor can be ignored so that the gate resistor can be designed with priority given to stability of the RF characteristics.

Abstract: A surface mount ring assembly for loudspeakers which comprises a ‘hard’ ring in which the speaker is secured. This hard ring is, in turn, secured to a resilient or ‘soft’ ring which soft ring is secured in the wall opening. The soft ring has a durometer of between 30 to 90 and a dynamic loss modulus of 1010 Dynes/cm2 at 100 to 1000 Hz. This effectively isolates the loudspeaker from the resonant frequency of the structure in which the speaker is secured.

Abstract: The invention relates to a load-bearing vehicle structure of composite material, and a method for moulding such a load-bearing vehicle structure. The invention concerns the fields of fiber-reinforced thermoplastic composites, sandwich structures and compression moulding. The load-bearing vehicle structure (1) according to the invention comprises first (2) and second (3) surface materials with reinforcement fibers and one or several intermediate pieces of core material (4, 5, 6, 7) which are arranged in pattern adapted to a load-bearing material structure, and is characterized in that the surface materials and/or the core material comprise(s) thermoplastic material, and that the first surface material is attached by means of thermal bonds to first faces of the piece or pieces of core material and that the second surface material is attached by means of thermal bonds to second, opposing faces of the piece or pieces of core material.

Abstract: A current compensation circuit for an amplifier, for example an operational amplifier, having input and output stages coupled at a high-impedance node, compensates for any modulation of current occurring at the high-impedance node. Particularly, the compensation circuit of the present invention reduces the error current at the high-impedance node resulting from a mismatch in beta between PNP and NPN transistors in the output stage, and reduces any error current resulting from the Early voltage effects of transistors in the output stage. In this manner, the present invention serves to substantially isolate the amplifier input stage from the output load, and from any beta mismatch or Early voltage effects in the transistors of the output stage, resulting in greatly improved open-loop gain.

Abstract: The invention relates to an apparatus for continuously drying vegetables, particularly leaf vegetables, comprising a mechanical drying section and a thermodynamic drying section, said mechanical drying section comprising a preliminary dripping section and a water removal section, or de-watering section, and said thermodynamic drying section comprising a hot section and a cold section.

Abstract: A device for applying pressure to a body limb comprises a sleeve containing individually inflatable cells, each cell being subdivided into longitudinally extending confluent compartments that are inflated and deflated essentially simultaneously. A messaging sleeve, an inflation unit for intermittent inflation of selected cells of the sleeve, and a detecting unit for detecting a temporo-spatial regime of cell inflation are provided. Applications include immobilization of fractured bones, and messaging of limbs to promote blood flow.

Abstract: Process and apparatus for separating a coating from an elastomeric material with the use of an extruder.

Abstract: A laminated waterproof footwear assembly. Where the footwear components are stitched together a gel-like sealant is placed on at least one surface of the footwear components to be joined together. A needle carrying a thread passes through the footwear components carrying the gel with it. The gel dams the hole and forms a waterproof seal.