摘要:
A tone arm assembly for record players has first and second electro-magnetic motors operable for swinging a tone arm in vertical and horizontal directions, respectively, in respect to a record disc on a turntable, and a control circuit for controlling the first and second motors in such a manner that the tone arm is moved from a raised inoperative position to a lowered playing position, or from the lowered playing position to the raised inoperative position in response to control signals.
摘要:
A phonograph record turntable assembly comprises a rotatable turntable having a rubber or other elastically flexible sheet overlying a substantial portion of its upper surface and secured thereto at least along an edge or edges of the sheet for defining at least one sealed interior space which contains a fluid material, preferably in the form of a viscous liquid, so as to provide a cushioned, vibration-damping record supporting surface which conforms to the shape of a warped or otherwise distorted phonograph record placed thereon. In order to avoid the accumulation of the liquid at any one portion of the interior space when the turntable is not horizontally disposed, such interior space may be divided into a plurality of liquid-containing compartments which are isolated from each other, as by partitions therebetween, and/or each interior space or compartment may further contain absorbent material which takes up the viscous liquid. The vibration-damping properties of the turntable assembly may be enhanced by providing solid particles which float in the viscous liquid.
摘要:
It is an object of the present invention to test a device under test including an optical interface. Provided is a device interface apparatus on which is loaded a device under test including an optical interface. The device interface apparatus comprises a device loading section on which the device under test is loaded; an optical connector that is to be connected to the optical interface of the device under test; and an optical connector moving section that moves the optical connector toward the optical interface of the device under test loaded on the device loading section, to optically connect the optical connector and the optical interface.
摘要:
A surface measurement module for 3-D image acquisition of a subject-under-inspection. The module having: (a) a casing to house a pattern shifting device having a fixed-pattern optic through which light from a light source is passed, an output of the pattern shifting device being directed at a polarizing beam splitter and the polarized output of the splitter directed through a lens assembly comprising at least one lens element; (b) a reflector to direct the polarized output exiting the lens assembly, to illuminate a surface of the subject-under-inspection; (c) a scattered light illumination off the surface is directed back through the lens assembly for capture by an image sensor; and (d) the casing also housing the polarizing beam splitter, the lens assembly, and the image sensor. The output of the fixed-pattern optic comprises a multi-frequency pattern. The pattern shifting device may be a linear or rotating type.
摘要:
The switching regulator according to the present invention comprises an oscillation circuit for generating a clock signal having a predetermined oscillation frequency; and a switching signal generation circuit for generating a switching signal for driving a switching element connected to an output circuit; wherein the switching signal generation circuit varies the ON time of the switching signal so that the frequency of the switching signal approaches the frequency of the clock signal; and varies the timing at which the switching signal is ON so that an output voltage outputted from the output circuit approaches a predetermined reference voltage.
摘要:
A video signal judgment circuit for judging the condition of a video signal compounded of a picture signal and a synchronization signal is provided. The video signal judgment circuit is adapted to first filter the video signal by a low-pass filter (LPF) having an adjustable cutoff frequency and then separate the synchronization signal from the filtered signal to provide a pulsed synchronization detection signal. Upon comparison of a detection signal formed on the basis of the synchronization detection signal with an adjustable judgment reference value, the video signal judgment circuit outputs a video signal judgment signal indicative of the condition of the video signal as to whether or not the video signal is nullified or deteriorated.
摘要:
A magnetic core for a signal line filter adapted to be assembled in a terminal connector for a signal line cable for connecting electronic devices to form a signal line filter, wherein the magnetic core is provided with pin insertion holes each having a tapered portion in the direction of thickness of the magnetic core, or tapered portions at both sides in the direction of thickness of the magnetic core.
摘要:
An apparatus for coupling a tractor, a dump trailer and a dump truck wherein the dump trailer is adapted to be selectively towed by the tractor or by the dump truck. A draw bar having a trunnion and a hole at the leading end portion is pivotally mounted on the dump trailer. The trunnion is adapted to be engaged with a gripper mounted on an arm member of the tractor so as to enable the dump trailer to be towed by the tractor. The hole of the draw bar is adapted to be engageable with a coupler pivotally mounted on a rear axle of the dump truck thereby allowing the dump trailer to be drawn by the dump truck.
摘要:
A safety device for hydraulically driven vehicles including a hydraulic motor for driving the vehicles, a variable displacement pump for supplying fluid to said motor, a servo control mechanism for controlling displacement of said variable displacement pump, an additional pump for supplying fluid to said servo-control mechanism, and a servo valve provided between said additional pump and said servo control mechanism for selectively communicating said servo control mechanism with said additional pump.Movement of the vehicle is prevented when an engine for driving the pumps is running while a shift control lever is either at forward movement position or backward movement position.
摘要:
Provided is a switching power source device in which fluctuation of the switching frequency can be suppressed without impairing the advantages of a non-linear control system. A switching power source device is provided with: switching control units of non-linear control type that generate an output voltage (out) from an input voltage (IN) by performing ON/OFF control of switching elements in accordance with the results of comparing a feedback voltage (FB) and reference voltage (REF); and an ON time setting unit that monitors switching voltage (SW) appearing at one end of the switch terminals, and sets the ON time (Ton) of the switching element in the switching control units based on the duty of the switching voltage (SW).