Results 201 to 210 of about 209,980 (256)
Rail mode, access mode and station choice: the impact of travel time unreliability
, 2008 Brons, M.R.E., Rietveld, P.
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The Journal of the Acoustical Society of America, 2006
Rail breaks caused by rolling contact fatigue defects are of growing concern to the railway industry. Very often critical defects cannot be detected reliably by conventional inspection methods. Low-frequency surface waves with a high penetration depth have the potential to overcome such difficulties.
D. Hesse, P. Cawley
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Rail breaks caused by rolling contact fatigue defects are of growing concern to the railway industry. Very often critical defects cannot be detected reliably by conventional inspection methods. Low-frequency surface waves with a high penetration depth have the potential to overcome such difficulties.
D. Hesse, P. Cawley
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Energy Requirements of the Rail Mode
Journal of Engineering for Industry, 1978The results of computer simulations of railroad operations to determine the energy required to pull freight and passenger trains over mountainous and flat profiles is presented. The effect of variations in average speed, profile and types of freight cars, is also determined.
A. N. Addie, B. T. Concannon
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Mode repulsion of ultrasonic guided waves in rails
Ultrasonics, 2018Accurate computation of dispersion characteristics of guided waves in rails is important during the development of inspection and monitoring systems. Wavenumber versus frequency curves computed by the semi-analytical finite element method exhibit mode repulsion and mode crossing which can be difficult to distinguish.
Philip W, Loveday +2 more
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Current mode instrumentation amplifier with rail-to-rail input and output
Proceedings of the 20th annual conference on Integrated circuits and systems design, 2007A Current Mode Instrumentation Amplifier with rail-to-rail input and output is presented. It is based on constant gm input stages, and cascode output stages. Although this CMIA structure has a good Input Common Mode Voltage, it suffers from a poor output swing, due to the limitation imposed by the current mirrors.
Filipe Costa Beber Vieira +4 more
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Common-mode response shaping in rail-to-rail op-amp input stages
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003Low-voltage rail-to-rail (r-t-r) operational amplifiers (op-amps) suffer from large deviations in their small-signal and large signal behaviors, as a function of the input common-mode (CM) voltage. This paper introduces the concept of the CM response shaping as an effective technique for maintaining roughly constant op-amp behaviors over the full input
J.M. Carrillo +4 more
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Low Power Rail to Rail D Flip-Flop Using Current Mode Logic Structure
2020 4th International Conference on Electronics, Materials Engineering & Nano-Technology (IEMENTech), 2020A storage element can be constructed using Current Mode Logic (CML) circuit. Folded CML D flipflop with improved switching activity circuit suffers from static power dissipation due to always ON load PMOSFETs. To reduce this static power dissipation, a positive edge triggered Low Power Rail to Rail D Flip-Flop (LPRR_DFF) using Rail to Rail D latch ...
Srivatsa Mutukuri, Kirti. S. Pande
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A new fast rail-to-rail continuous-time common-mode feedback circuit
2017 MIXDES - 24th International Conference "Mixed Design of Integrated Circuits and Systems, 2017A novel and reliable rail-to-rail continuous-time Common-Mode Feedback Block (CMFB) circuit for low voltage, large output swing, and high-speed applications is presented in this paper. The main aims of the proposed idea are achieving high accuracy, high linearity and high-speed CMFB accompanied wideband dynamic range and large output swing as well ...
Sina Mahdavi +3 more
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A buffered, constant gain, opamp with rail-to-rail common-mode range
1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96, 2002A buffered, high frequency, high DC gain, rail-to-rail, constant transconductance (G/sub m/) operational amplifier was designed. The operational amplifier is a part of an analog/digital system which implements a Gabor convolution for real-time dynamic image processing.
L. Moldovan, H. Li
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1V rail-to-rail constant Gm amplifier with common-mode elimination technique
2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013In this paper we present a novel common-mode elimination technique for a 1V rail-to-rail CMOS amplifier. For 1V single supply voltage, the input signal compression technique ([1]) is used to avoid the dead zone of input stage. Before the conventional PMOS input amplifier, the original signal is processed by the common mode elimination block which is ...
null Boram Lee, Ted Higman
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