Tracking(locked) ABSTRACT We were assigned to build a phase locked loop frequency synthesiser. The purpose is to help students to gain experience in hardware construction‚ coordinated teamwork and project management. The design uses 74HC4046‚ a PLL integrated circuit (IC) made from CMOS technology A PLL is a closed loop frequency system that locks the phase of an output signal to an input reference signal. The term “lock” refers to a constant or zero phase difference between two signals. The signal from
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around you just like the Moon orbits Earth. * As you turn‚ you’ll see the ball go through phases just like the Moon. Understanding Questions Directions: Answer the following questions in complete sentences. One to two sentences will not suffice. 1. Write down what your observations as you look at the ball at different positions in its orbit around your head. The ball goes thru the same phases that the moon would go through. The way I started would be the same as the full moon (the ball
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racing ahead. The process of NPD is crucial within an organization. Products go through the stages of their lifecycle and will eventually have to be replaced There are seven phases of new product development. The approach of the three companies to NPD will be analyzed in relation to the NPD phases as discussed briefly below: Phase 1: Idea generation New product ideas have to come from somewhere. But where do organizations get their ideas for NPD? Some sources include: • Within the company i.e. employees
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Every property is subject to potential environmental risks‚ the phase one environmental site assessment (ESA) can help determine whether a property may have been contaminated by current or previous activities. The purpose of the environmental assessment is to determine if there is a contamination on the property which may affect the environment or the people who are using the property. It is commonly required when there’s a transaction in the ownership of the property‚ when applying for a building
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1 A Voltage-Controlled Oscillator (VCO) is a circuit that provides a varying output signal (typically of square-wave or triangular-wave form) whose frequency can be adjusted over a range controlled by a dc voltage. An example of a VCO is the 566 IC unit‚ which contains circuitry to generate both squarewave and triangular-wave signals whose frequency is set by an external resistor and capacitor and then varied by an applied dc voltage. Figure (1) shows that the 566 contains current sources to charge
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Phase Change Lab Ha Min Noh Ms. D Chemistry February 6‚ 2016 Question How does time relate to the change in temperature of H2O as it changes phases from ice to water to gas? Hypothesis If the time which H2O stays on the hot plate increases‚ then the temperature of H2O will increase and the phases from ice to water to gas will change because the heat is a source of energy to change the physical states. Background Ice is a solid form of H2O and water is a liquid form of H2O. The gas form of H2O
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3 Phases of Carbon Cycle Phase 1: Carbon fixation The Calvin cycle incorporates each CO2 molecule by attaching it to a five-carbon sugar named ribulose biophosphate (abbreviated RuBP). The enzyme that catalyzes this step is RuBP carboxylase‚ or rubisco. The product of the reaction is a six carbon intermediate so unstable that it immediately splits in half to form two molecules of 3-phoshpyglycerate (for each CO2) Phase 2: Reduction Each molecule of 3-phsophoglycerate receives an additional
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Evaluation of using two-phase frictional pressure drop correlations for normal gravity to microgravity and reduced gravity Xiande Fang ⇑‚ Honggang Zhang‚ Yu Xu‚ Xianghui Su Institute of Air Conditioning and Refrigeration‚ Nanjing University of Aeronautics and Astronautics‚ 29 Yudao St.‚ Nanjing 210016‚ China Received 8 May 2011; received in revised form 15 August 2011; accepted 5 September 2011 Available online 19 October 2011 Abstract The calculation of two-phase frictional pressure drop (TPFPD)
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Phase Change Lab Report by Dylan Norford Abstract: The purpose of this experiment is to study the energy changes associated with the phase changes of water. In this experiment we know the water is gaining energy so we know the heat is going to be positive and we can use the equation MCΔT to find the energy change. The specific heat will be 1 and we just have to measure the water to find the mass and take the temperature before and after we start to find the energy change. Background: The science
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environments with a significant exploratory element (e.g.‚ research and development)‚ these stages may be supplemented with decision points (go/no go decisions) at which the project ’s continuation is debated and decided. Most projects have four or five phases‚ but some have nine or more. Even within a single application area there can be significant variations—one organization’s software development life cycle may have a single
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