摘要:
A semiconductor memory for writing or reading data words in response to prescribed bank address data and bit address data, each word having a prescribed amount of bits, is described. The memory includes a memory array for storing the data words. The memory array includes at least two memory banks adjacent to one another, each bank having a bit area corresponding to the prescribed amount of bits, buffer memory for temporarily storing the data word for writing into the memory array or the data word read from the memory array, a first source for applying the bank address data to the memory array to access the memory banks, a second source for applying the bit address data to the memory banks to access prescribed bit locations of the memory banks, and logic circuitry responsive to the bit address data for cyclically shifting the data word stored in the buffer memory by an amount corresponding to the value of the received bit address data.
摘要:
A rotary anode type X-ray apparatus includes an arithmetic unit for calculating the optimum number of revolutions of the anode, on the basis of the previously measured and stored temperature-characteristic data of the X-ray tube, at least one of the tube voltages applied to the X-ray tube, the X-ray radiation time, and the tube current. According to frequency of revolution data derived from the arithmetic unit, the motor controller drives the motor to rotate the rotary anode at an appropriate number of revolutions. This number is determined by the X-ray tube drive conditions, including the tube current.
摘要:
A parallel multiplicator including adder circuits based on Booth's algorithm is disclosed. All of the adders of a plurality of rows are constructed based on the carry save system. When the negative partial-product signal is input, the "2's complement" generating signals CB0 to CB3 for the LSB of the negative partial-product signal are input to the bit adder in the lowest order row which corresponds to the LSB of the negative partial-product signal.
摘要:
A product obtained by subjecting an isolated soybean protein and corn starch used as the raw materials to pressing and heating treatments in a twin-screw extruder exhibits its fibrous properties when it is immersed in warm water to dissolve out a part of the corn starch and a little amount of the soybean protein. This product is relatively tough. The corn starch is dissolved out in only a small amount upon the immersion in warm water and, therefore, the yield is high.
摘要:
A control system for a cycloconverter of the circulating current type produces an ac current of a variable frequency. The cycloconverter is configured to connect a power factor compensating capacitor at its receiving-end, thus to control a lagging reactive power due to a circulating current flowing in the cycloconverter so as to cancel a leading reactive power due to the power factor compensating capacitor. Such a control is carried out under the condition of an operation below the rated load. In contrast, under the condition of an operation above the rated load, a control is effected so that the circulating current flowing in the cycloconverter is substantially kept constant.
摘要:
A power converter apparatus has at least two converters CONV1 and CONV2. The DC side of each of the converters CONV1 and CONV2 is connected to a filtering capacitor Cd which serves as a DC power source for a load device LOAD. The AC side of the converter CONV1 is connected to the secondary winding of a first transformer TR1. The AC side of the converter CONV2 is connected to the secondary winding of a second transformer TR2. The primary winding of transformer TR1 is connected in series to the primary winding of transformer TR2. The series circuit of the primary windings of transformers TR1 and TR2 is coupled to an AC power supply SUP via a single AC reactor Ls. A control method of the invention is adapted to the power converter apparatus in which plural PWM converters are used. The phase of a modulating wave (carrier) of one PWM converter differs by a predetermined degree from that of another PWM converter.
摘要:
An automatic running work vehicle adapted to repeatedly work on the ground while automatically changing its running direction and provided with means for controlling the vehicle body so that the vehicle body will be automatically positioned, upon a change of direction after finishing one course, for the next course with its orientation and position in match with the boundary of the course.
摘要:
An automatic running work vehicle in which both front wheels and rear wheels can be steered and which is provided with a follower sensor for detecting the boundary between an unworked area and a worked area and an orientation sensor for detecting the running direction so as to run automatically along the boundary. Based on the result of detection of the boundary by the follower sensor and on the result of detection of the orientation of the vehicle body by the orientation sensor, the front and rear wheels are steered automatically to correct the running direction automatically.
摘要:
An AC current detection circuit is intended to detect whether an AC induction current for the rotor of the rotating anode X-ray tube flows or not. A current transformer is employed in the rotor supply circuit to generate a lower voltage at its output circuit by utilizing its magnetic-electric conversion effect. A transistor will switch on-off by receiving the generated voltage and produce a series of output pulse signals. A retriggerable monostable multivibrator will detect a missing pulse from the output pulse signals, which indicates a failure of the rotor supply operation.
摘要:
A wire-twisting machine for twisting individual wire-like structures into a cable, having a plurality of bobbins around which are wound the wire-like substance to be twisted, the bobbins being mounted on individual cradles which are supported at either end by disks secured to a common spindle, comprising: a drive mechanism having prime movers which are external to the bobbin-cradle assembly for controlling the speed of feeding the wire-like structure from its respective bobbin, thus resulting in constant wire-like structure tension, and another drive mechanism for controlling cradle rotation for fixing or adjusting the amount of twisting-back in said cable.