1,083 research outputs found

    12 V Automotive systems

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    Standard level N-channel MOSFET in an LFPAK56 (Power SO8) package using TrenchMOS technology. This product has been designed and qualified to AEC Q101 standard for use in high performance automotive applications. 2. Features and benefit

    Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit VDS drain-source voltage Tj = 25 °C

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    1. General description P-channel enhancement mode Field-Effect Transistor (FET) in a leadless ultra small DFN1010D-3 (SOT1215) Surface-Mounted Device (SMD) plastic package using Trench MOSFET technology. 2. Features and benefits • Trench MOSFET technology • Leadless ultra small and ultra thin SMD plastic package: 1.1 × 1.0 × 0.37 mm • Exposed drain pad for excellent thermal conduction • ElectroStatic Discharge (ESD) protection 1 kV HBM • Drain-source on-state resistance RDSon = 100 m

    Symplectic Integration of Hamiltonian Systems using Polynomial Maps

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    In order to perform numerical studies of long-term stability in nonlinear Hamiltonian systems, one needs a numerical integration algorithm which is symplectic. Further, this algorithm should be fast and accurate. In this paper, we propose such a symplectic integration algorithm using polynomial map refactorization of the symplectic map representing the Hamiltonian system. This method should be particularly useful in long-term stability studies of particle storage rings in accelerators.Comment: 10 pages, 1 figur

    Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit

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    Intermediate level gate drive N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using advanced TrenchMOS technology. This product has been designed and qualified to the appropriate AEC Q101 standard for use in high performance automotive applications. 1.2 Features and benefits � AEC Q101 compliant � Suitable for standard and logic level gate drive sources � Suitable for thermally demanding environments due to 175 °C rating 1.3 Applications � 12 V Automotive systems � Electric and electro-hydraulic power steering � Motors, lamps and solenoid control � Start-Stop micro-hybrid applications � Transmission control � Ultra high performance power switching 1.4 Quick reference dat

    Teaching Geophysics with a Vertical-Component Seismometer

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    Earthquakes are some of the more dramatic expressions of the dynamics of our planet. The sudden release of stress built up slowly by tectonic or volcanic processes often has far-reaching consequences, and can be measured (in classrooms) around the world. This is one reason why designing and building seismometers has been a popular activity,1,2 and why different versions of “Seismometer in Schools” projects thrive in the United States, Australia, and Europe. We present a cheap, robust, and easy-to-build seismometer—called the TC1 —to measure seismic displacements in the vertical direction. Its components are easy to obtain and assemble, yet the resulting instrument is accurate enough to record earthquakes from around the globe. The parts list and building instructions of the TC1 seismometer are freely available online. Alternatively, a complete kit can be purchased for around US$300. Assembling the system naturally introduces students to a number of concepts in physics and engineering, while upon completion seismic recordings trigger discussions about the dynamics and internal structure of the Earth. The discussions are fostered by service learning and shared in the network of TC1s called the Z-NET

    Large emergency-response exercises: qualitative characteristics - a survey

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    Exercises, drills, or simulations are widely used, by governments, agencies and commercial organizations, to simulate serious incidents and train staff how to respond to them. International cooperation has led to increasingly large-scale exercises, often involving hundreds or even thousands of participants in many locations. The difference between ‘large’ and ‘small’ exercises is more than one of size: (a) Large exercises are more ‘experiential’ and more likely to undermine any model of reality that single organizations may create; (b) they create a ‘play space’ in which organizations and individuals act out their own needs and identifications, and a ritual with strong social implications; (c) group-analytic psychotherapy suggests that the emotions aroused in a large group may be stronger and more difficult to control. Feelings are an unacknowledged major factor in the success or failure of exercises; (d) successful large exercises help improve the nature of trust between individuals and the organizations they represent, changing it from a situational trust to a personal trust; (e) it is more difficult to learn from large exercises or to apply the lessons identified; (f) however, large exercises can help develop organizations and individuals. Exercises (and simulation in general) need to be approached from a broader multidisciplinary direction if their full potential is to be realized

    Learning to Serve

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    If you\u27re ready to initiate a service learning program with your students and want to know where to begin, you\u27ve come to the right place! This section will give you a step-by-step guide to starting a service learning program

    Think different: A comparison of the critical thinking abilities of education majors

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    In an increasingly complex society, the need for people to exercise critical thinking effectively is clearly evident. The institution of education recognizes that its responsibility to teach students to think critically is vital in order for them to negotiate decisions humanely and intelligently in an ever-changing world; Hundreds of reports from various committees and researchers along with such insidious incidents as the rise in murderous assaults on children inside school buildings, such as the massacre in Littleton, Colorado, attest to the fact that schools fail to teach students to evaluate social life critically. While educators advocate critical thinking, teacher education faculty must insure that prospective elementary teachers possess and exercise critical thinking abilities to pass on later to their students; This was an exploratory investigation. It sought to examine the critical thinking abilities of both elementary education and secondary education majors in a local university in a city in the Southwest. A review of the literature revealed little research that compared critical thinking abilities among prospective elementary education teachers and secondary education majors as well as among prospective teachers and typical college students having different academic backgrounds. This study identified the difference between the critical thinking skills of prospective elementary education teachers and prospective secondary education teachers (research hypothesis 2) and identified the difference in critical thinking appraisal scores between prospective elementary and secondary education teachers\u27 scores and the scores of typical college students as measured by the Watson-Glaser Critical Thinking Appraisal (research hypothesis 1). The following research hypotheses were investigated: (1) Prospective teachers have lower critical thinking appraisal scores than typical college students as measured by the Watson-Glaser Critical Thinking Appraisal. (2) Prospective elementary education teachers differ from prospective secondary education teachers with respect to critical thinking skills. Results of testing supported both hypotheses

    Symbol Parameter Conditions Min Typ Max Unit Static characteristics

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    1. General description Logic level N-channel MOSFET in a D2PAK-7 package using TrenchPLUS MOSFET technology. The device includes TrenchPLUS current sensing and integrated diodes for temperature sensing. This product has been designed and qualified to AEC Q101 standard for use in high performance automotive applications. 2. Features and benefits • AEC-Q101 Compliant • Enables temperature monitoring due to integrated temperature sensor • Enables current sense measurement due to integrated current senseFET • Suitable for thermally demanding environments due to 175 °C ratin
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