摘要:
A heat-resistant aluminum alloy material with high strength and preparation method thereof are provided. The aluminum alloy material comprises (by weight %): Cu: 1.0˜10.0, Mn: 0.05˜1.5, Cd: 0.01˜0.5, Ti: 0.01˜0.5%, B: 0.01˜0.2 or C: 0.0001˜0.15, Zr: 0.01˜1.0, R: 0.001˜3 or (R1+R2): 0.001˜3, RE: 0.05˜5, and balance Al:, wherein, R, R1, and R2 include Be, Co, Cr, Li, Mo, Nb, Ni, W. The Al alloy has the advantages of narrow quasi-solid phases temperature range of alloys, low hot cracking liability during casting improved high temperature strength and high heat resistance.
摘要:
A method and apparatus for recovering timing information from a ternary signal includes transforming a ternary signal into a binary signal while retaining the necessary timing information. A two facet circuit initially receives a ternary signal, one that includes three levels of values. A first facet of this circuit transforms the ternary signal into two binary signals, each having one of the three levels represented by one value and both having the same level represented by the other value. The second facet of this circuit combines the two binary signals to produce a third binary signal that has one value representing one level and another value representing the two other levels.
摘要:
A dehydration device includes a solar energy collection device connected with a water source so as to transfer solar energy into thermo energy which heats water that is supplied from the water source. A water storage device includes at least one hot water tank which has a heater connected to the solar energy collection device. The water heated by the solar energy collection device is stored in the at least one hot water tank. A heat-exchange device has a pipe connected with the water storage device, and an air delivery unit which blows air toward the pipe to form hot air to dehydrate foods. A windmill generates electric power which is provided to the dehydration device. The dehydration device uses green energy to dehydrate foods to keep proper freshness and nutrition. The dehydration device is easily moved and friendly to the environment.
摘要:
The present invention concerns a method and architecture comprising a first circuit, a second circuit, and a logic circuit coupled to said first and second circuits. The first segment generally comprises a first repeater core configured to operate at one of a plurality of speeds and a first port. The second segment generally comprises a second repeater core configured to operate at one of a plurality of speeds and a second port. A logic circuit may be configured to couple each of the first and second ports to either the first or second repeater core.
摘要:
The present invention concerns a method and architecture comprising a first circuit, a second circuit, and a logic circuit coupled to said first and second circuits. The first segment generally comprises a first repeater core configured to operate at one of a plurality of speeds and a first port. The second segment generally comprises a second repeater core configured to operate at one of a plurality of speeds and a second port. A logic circuit may be configured to couple each of the first and second ports to either the first or second repeater core.
摘要:
A method and apparatus for improving the reliability of resynchronization in a serial frame based protocol communication system which can avoid resynchronization when line loss erroneously causes data to appear as a redundant unique code pattern. The synchronization is only initiated if two such unique code pattern bytes are received within a specified time separation.
摘要:
Apparatus is disclosed for introducing a precompensation delay in the path of a data signal to be written onto a magnetic medium, such as a floppy or hard disk. The apparatus includes a current controlled oscillator made up of delay elements having current control nodes, and means for controlling the current level being drawn from the current control nodes. The latter means includes three matched voltage controlled current sources having their outputs connected through a current splitter to the current control nodes, and bypass transistors for decoupling two of the voltage controlled current sources in response to a delay selection signal indicating whether the subject data pulse should be precompensated early, nominal or late. A current mirror arrangement with a current transfer ratio adjustable through the choice of two external resistors adjusts the current outputs of two of the voltage controlled current sources, so that the current level drawn from the current control nodes is different depending on which the voltage controlled current sources is (are) selected. The apparatus also includes a master voltage controlled oscillator, located on the same chip as the above-described apparatus, with characteristics and a control voltage matched to those of the above-described apparatus. If the frequency of the master oscillator is phase locked to a multiple of the bit cell frequency, then the choice of the two external resistors adjusts the precompensation delay period as a continuous percentage of the bit cell time.
摘要:
A heat-resistant aluminum alloy material with high strength and preparation method thereof are provided. The aluminum alloy material comprises (by weight %): Cu: 1.0˜10.0, Mn: 0.05˜1.5, Cd: 0.01˜0.5, Ti: 0.01˜0.5%, B: 0.01˜0.2 or C: 0.0001˜0.15, Zr: 0.01˜1.0, R: 0.001˜3 or (R1+R2): 0.001˜3, RE: 0.05˜5, and balance Al:, wherein, R, R1, and R2 include Be, Co, Cr, Li, Mo, Nb, Ni, W. The Al alloy has the advantages of narrow quasi-solid phases temperature range of alloys, low hot cracking liability during casting improved high temperature strength and high heat resistance.
摘要:
An intensive pallet and a unit direction plank for the same are provided, and the pallet comprises a plurality of first direction planks spaced from each other and a plurality of second direction planks spaced from each other. The second direction plank and the first direction plank stack and cross. Two frame holes are formed in each unit of first direction plank. One frame hole communicates with a next spaced frame hole of the unit first direction plank. A plurality of first ribs are formed at the top side of each frame hole. The frame holes may be inserted by the insertion levers of a forklift. The first ribs are provided to enhance the top sides of frame holes into which the levers are inserted.
摘要:
The invention provides a test scheme of analog-to-digital converters and method thereof. It comprises: a control circuit, a step-ramp signal generator, a multiplexer, an n+m-bit counter, and a test analyzing circuit, wherein m=1, 2, 3 . . . , based on desired accuracy of the test scheme. A clock pulse is coupled to the n+m-bit counter and a control circuit for regulating duty cycle, amplitude, and frequency. It is also coupled to a step-ramp signal generating circuit for being integrated as a test signal source. Therefore the step-ramp signal can synchronize with the n+m-bit counter, and the output codes are applied to compare with output codes of the n-bit ADCs for completely digitally analyzing ADC's parameters. The step-ramp signal is divided into several segments, each is integrated by the regulated clock signal with different duty cycles, which increases integrating time to compensate leakage currents of the capacitor and improve linearity of the step-ramp signal.