摘要:
The buffer circuit of the invention converts TTL level input signals to CMOS level output signals. The buffer circuit has three inverter stages, in which the output signal of one stage is positively fed back, in order to achieve complete modulation. Because of a current limiting circuit, the current consumption of the buffer circuit does not exceed a defined value. Despite a high switching speed, the power consumption of the circuit is low.
摘要:
The device comprises a treatment laser and at least two diagnosis lasers of differing wavelengths, wherein a receiving means is allocated to each diagnosis laser. The signal of the receiving means is led to an electronic evaluation and control means. In the distal end section of the endosopic part of the device the light beams of all lasers are guided together.
摘要:
Disclosed is a semiconductor memory (18, 20, 100, 200) having a hierarchical bit line architecture including local bit lines (LBL.sub.1, LBL.sub.2) on a lower fabrication layer, coupled to memory cells (MC), and master bit lines (MBL) on a higher fabrication layer, each coupled to an associated sense amplifier (SA.sub.i). Local bit lines disposed in any given column are coupled to different numbers of memory cells, i.e., the local bit lines have different lengths (L1, L2) over the memory cells. A hybrid configuration is preferably employed in which one local bit line (LBL.sub.1) in a column is directly coupled via a switch (25.sub.1) to an associated sense amplifier, whereas the other local bit lines in the column (LBL.sub.2 -LBL.sub.4) are operatively coupled to the sense amplifier via the master bit line. The different local bit line lengths are preferably selected such that total bit line capacitance with respect to any of the memory cells is substantially equalized, thereby improving data retention time for the memory.
摘要:
In a method of regulating the rotational speed of a gas turbine during load disconnection, the fuel line (8) of which to the combustion chamber (10) can be controlled via regulating valves (5) and via burner control valves (6), and the combustion chamber of which is operated with premixing burners (11), some of the premixing burners are used as idling premixing burners (11a) and the rest are operated only as main burners. During load disconnection, the main burners are shut off by means of the burner control valve (6), and the idling premixing burners are supplied with fuel via a regulated bypass line (3).
摘要:
A process for the optical spatially resolved determination of density distributions in biological tissues includes as a first step irradiating a biological tissue by directing a locally confined beam of electromagnetic radiation at an incidence position of the tissue; keeping the incidence position fixed; determining the thickness of the tissue being irradiated; and sensing and recording the directly transmitted radiation component and the scattered radiation component in a spatially resolved manner over a defined spatial angle. As a second step, the incidence position is changed and the first step is repeated. As a third step, the second step is repeated a number of times to obtain a reconstructive representation of the tissue through which the radiation has passed, based on the spatially resolved recordings of the transmitted and scattered radiation components and the tissue thickness as determined in each repetition of the first step.
摘要:
Applicator device for laser radiation wherein the end of the radiation conducting light-wave conductor faces toward the object to be treated and is mounted in a tube-like sleeve which is closed and transparent at the end for the laser radiation. The end of the sleeve and/or the end of the light-wave conductor are provided with a scattering device which includes a scattering volume. For this purpose, the application of the scattering medium can be adapted to the particular requirement.
摘要:
A device for the removal of tubular fabric from a circular knitting machine comprises a machine frame, a driven take-up roller around which the tubular fabric is partially wound, a winding rod for winding the tubular fabric and two bearings at the ends of the winding rod. The bearings of the winding rod are arranged in levers which are pivotally mounted on the machine frame for pivoting from an operating position to a removal position. In the operating position, the winding rod can be locked in position by wedge-shaped locking elements. In the removal position, the winding rod can be removed from the machine frame simply and easily.
摘要:
A machine for kneading dough portions into a round shape is provided with a kneading drum adapted to be driven in the peripheral direction and in the direction of an axis. The kneading drum is concentrically enclosed by a compartmented drum adapted to be rotatingly driven in a peripheral direction and has kneading chambers open radially outwardly and radially inwardly towards the kneading drum. Furthermore, the compartmented drum has, looped around a portion of its periphery, in a belt contact zone, a kneading belt which presses the dough portions against the kneading drum and prevents them from falling out of the kneading chambers.The kneading belt can be driven by a positive drive which is independent of bearing forces between the kneading belt and the surface of the compartmented drum, whereby the kneading belt no substantial bearing forces on the belt contact zone of the compartmented drum.
摘要:
On a stitch-forming machine having knitting needles, knocking-over sinkers and controlling sinkers, in addition to their mutual articulated connection, the knocking-over and controlling sinkers are also connected to each other for mutual longitudinal displacement. Contiguous sliding surfaces are provided on the sinkers so as to slide on one another and bring about tilting motion of the knocking-over sinkers during mutual longitudinal displacement of the sinkers. Return parts are also provided for returning the tilted knocking-over sinkers to their initial position.
摘要:
A knitting machine with stitch-forming knitting needles which are actuated by pattern bars and which are adjustable in accordance with the three-way technique to three operating positions, i.e., the knitting, floating and tucking positions, comprises electromagnetic selector means which are controlled in accordance with a pattern to adjust the knitting needles to their operating positions and also eccentric steering means which cooperate with these selector means. Arranged in each pattern bar are two displaceable selector elements which are biased by a spring and which are adjustable by cooperation of the electromagnetic selector means and the spring so as to be brought in accordance with a pattern or combination into the path of steering cam means trigger displacement of the selector elements and hence pivotal motion of the pattern bar in accordance with the desired operating position.