摘要:
In the basic configuration of the microwave landing system, an azimuth station (2) and an elevation station (1) are interconnected by a data link for transferring data and sync signals, and each of the stations includes a monitoring facility (10, 15; 3, 8) for monitoring its signals in the near field. In the novel microwave landing system, the near-field monitoring facility of one of the stations is also used to monitor the signals from the other station in the far-field.
摘要:
A circuit arrangement for the controlled supply of loads, in particular portable devices, for example dry razors and electronic flash devices, or also fluorescent lamps or the like, on virtually any d.c. and a.c. systems of different frequencies and voltages, without switching over. For that purpose, the arrangement uses a blocking converter (5) which is controlled by means of two controllable semiconductor switches (T1, T2) in dependence on the current (I1) flowing through the primary winding (n1) of the converter (5) and in dependence on the input voltage (U1) of the supply, in such a way that the output power supplied follows a desired characteristic curve and in particular is constant. If the load to be supplied is an accumulator (2) with a motor (1) connected in parallel, the circuit arrangement can supply either the full motor power or, when the motor is switched off, a charging current for the accumulator (2). Additional control of the circuit arrangement is possible, in dependence on the load current, so that for example a motor can be adjusted in dependence on loading. When the arrangement supplies a fluorescent lamp, the light flux can be controlled.
摘要:
A brake surface is provided for slide coaster sleds in which the brake surface is configured to be an elongated surface of much greater length relative to the width. The braking surface is particularly useful for use on wet slide surfaces because the foremost sections of the brake surface remove the moisture at the brake-slide interface and dry the surface through frictional contact. Therefore, the following brake portions of about two-thirds of the length are available to bring about effective braking action. Preferably, the elongated brakes are formed in a U-shape in cross section with a central groove for containing moisture. Also, it is preferred to have two spaced apart brake surfaces positioned on opposite sides of the longitudinal center line of the sled.
摘要:
This invention relates to improvements in a slide support structure. The slide surface is comprised of a plurality of curved and straight segments, joined end to end to form the slide surface. The support includes a plurality of bearer support segments corresponding generally to the slide segments. The invention here relates to the spaced bearing connections between the two which allows for relative vertical and horizontal movements to align for and adjust for minor differences in the curvature of the related slide and support segments.
摘要:
Common solar radiation receivers are equipped with a chamber for transmission of an operating gas which is directed along to an absorber for solar radiation for thermal absorption. The absorber has a dome-shaped entry window made of quartz glass, wherein the inner side facing the absorber assumes a nominal interior temperature Ti of at least 950° C. during proper use, preferably at least 1000° C., whereas the outer side facing away from the absorber is exposed to the environment and subject to risk of devitrification. The invention relates to modifying the known solar radiation receiver so that a high absorber temperature can be set and thus a high efficiency of the solar thermal heating is enabled, without increasing the risk of devitrification in the region of the outer side of the entry window.
摘要:
Disclosed is a surge protection system for use with an ion source assembly. The system comprises a high voltage power source coupled in series with a thermionic diode and an ion source assembly. The high voltage power supply is enclosed in the pressure tank and drives the ion source assembly. The thermionic diode is comprised of an insulating tube disposed between the ion source assembly enclosure and the output of the high voltage power supply and makes use of existing ion source assembly components to limit damage to the power supply during arc failures of the ion source assembly.
摘要:
The focusing operation of a microscope, control rotary knobs which receive the motion of fingers or hand of an operator to change the focus position relative to a sample under observation. Two of the control rotary knobs are on a common shaft and coaxial with one another and rotationally fixed with respect to one another, and are connected to a position encoder. A toggle switch which is connected to the control circuit and can be actuated by touching or moving one or both rotary control knobs. Whereby the drive circuit is configured such that it generates, as a function of the rotation of the two rotary knobs and as a function of the actuation or position of the toggle switch, a rough or fine adjustment of the focus position relative to the sample under observation.
摘要:
A pivot bearing having a first bearing surface of hollow cylindrical design, at least in sections. Guided in the first bearing surface is a second bearing surface of hollow cylindrical design, at least in sections. Rolling bodies are arranged between the bearing surfaces. The pivot bearing also has a cage for guiding the rolling bodies, and a slide block to prevent the cage from slipping. A first grove is formed in the first bearing surface and a second grove is formed in the second bearing surface. The groves are inclined transversely with respect to the running direction of the rolling bodies. The opposite inclination of the groves has the result that, if the spacing between the bearing surfaces is neglected, the grooves intersect. The sliding block is guided between the grooves. The cage has a recess that holds the sliding block permitting cage control.
摘要:
A laser radiation-guiding device including: a laser including a control unit; ports for connection of one module each, it being possible that laser radiation may exit at the ports. The device further can include joining part sensors respectively assigned to a port and whose electrical condition depends on whether a predetermined joining part is spaced apart from the respective port by less than a maximum distance in a predetermined orientation relative to the respective port, and an evaluating unit connected to the joining part sensors via a signal link that detects the electrical conditions of the joining part sensors and, depending on the detected conditions, emits a control signal to the control unit of the laser or to a laser radiation-blocking unit, by which emission of eye-damaging laser radiation to the ports of the device can be prevented inhibited.
摘要:
An apparatus that forms a source bushing, while comprehending the possible formation of electrically conductive films thereon, is disclosed. Such an apparatus may advantageously be used to isolate an ion source from other components within the ion implanter, as these components may be at different electrical potentials. In one embodiment, the source bushing is constructed from a material having a lower electrical resistance than is currently used. By constructing the bushing in this manner, the effects of the applied lower resistance films is reduced, as the change in effective resistance is reduced. In other embodiments, the source bushing is purposely lined with an electrically semiconducting material, so that the effects of the later applied lining are minimized. In either case, the electrical potential between the two devices that are being isolated by the bushing is more evenly applied across the bushing.