Frequency-to-Voltage Converters Features: VOLTAGE-TO-FREQUENCY • Choice of Linearity: - TC9401: 0.01% - TC9400: 0.05% - TC9402: 0.25% • DC to 100 kHz (F/V) or 1 Hz to 100 kHz (V/F) • Low Power Dissipation: 27 mW (Typ.) • Single/Dual Supply Operation: - +8V to +15V or ±4V to ±7.5V • Gain Temperature Stability: ±25 ppm/°C (Typ.) • Programmable Scale Factor General Description: The TC9400/9401/9402 are low-cost Voltage-to-Frequency (V/F) converters‚ utilizing low-power CMOS technology. The converters accept
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MW • 77 M Rotor Diameter • 50-100 M Tower Doubly-Fed Generator • 98% Availability • Speed 10-20 RPM Main Shaft & Bearing • Variable Pitch Gearbox Epoxy-Glass Composite Blades Transformer & Electrical Power Electronic Converter 2/ July‚ 2008 Vestas V100-2.75 Land Based Technology • • 80-100m tapered cylindrical steel towers • 3 stage gearbox • Distributed component drivetrain • Clipper 2.5-93 1.5 -3.0 MW upwind configuration Full span
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Generating multi signals with the option of changing frequency 8 Project idea We will use the FPGA to implement the digital representation of the different signals‚ then we will turn them to the wanted analog signals using a digital to . . analog converter Note: all codes are VHDL code which is a .suitable interface to deal with the FPGA 9 ? Why using FPGA The fact that FPGA can be easilyreprogrammed make it possible to get any desired waveform like exponential ‚ cardiac and sinc wave form ‚ we can
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Project paln Soft starter and soft stopping for speed control for induction motors Introduction The project is entirely on the design and development of a soft starter converter that will satisfy and implement the soft starting and soft stopping for speed control of an induction motor. Soft starters also called solid state starter are used for gentle starting and stopping of induction motors. Pumps‚ centrifuges‚ compressors‚ escalators‚ belt conveyors‚ mills‚ fans‚ stone crusher and saws are typical
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software and to exercise new functionality. For help installing PageMaker 7.0‚ review the How_to_Install.wri (Windows) and How_to_Install.txt (Macintosh) documents available on the PageMaker 7.0 application CD-ROM. For information on filters‚ converters‚ and cross-platform issues‚ refer to the related ReadMe files on your PageMaker 7.0 application CD-ROM and in the PageMaker 7.0 folder on your hard drive after installation. The following documents are installed with PageMaker 7.0 in a folder
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battery‚ converter/inverter‚ motor‚ battery. INTRODUCTION The review is finished through searching various scholarly articles‚ books‚ dissertations‚ conference proceedings which are relevant to electric vehicle technology. From Automotive Power Generation and Control‚ the history and developments of electric vehicle technology has been reviewed. ELECTRIC AND ELECTRIC HYBRID VEHICLE TECHNOLOGY: A SURVEY interpreted the basic structure of electric vehicles‚ which consists of battery‚ converter‚ motor
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requires high starting torque. The induction motor used in this experiment is a there-phase squirrel-cage induction motor. 2.2 Power converter Since it is necessary to adjust the voltage magnitude according to maintain a constant air-gap flux‚ when the motor supply frequency is varies‚ a power-converter is used in the experiment A power converter is power-electronics based device which can supple power with varied frequency. It first converts the normally available fixed frequency ac supply
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installing algorithm in the microcontroller of the DC motor driver and it can be reprogrammed according to the requirement. The speed control makes the solar tracking system to track the Sun more accurately and the torque control saves energy. converter is used to step down the voltage in order to reduce the turning speed of solar panel [4]. Fig.1. Block diagram of motor driver I. INTRODUCTION Solar tracking system is used to track the position of sun in order to get the maximum energy
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1.0 What Causes the Tides Tides are periodic rises and falls of large bodies of water. Tides are caused by the gravitational interaction between the earth and the moon. Tides are the cyclic rising and falling of earth’s ocean surface caused by the tidal forces of the moon and the sun acting on the earth . Tides cause changes in the depth of the sea and produce oscillating currents known as tidal streams‚ making prediction of tides important for coastal navigation. The strip of seashore
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ENERGY BALANCE Desulphurizer Here Sulphur in Naphtha is made to react with Hydrogen in presence of catalysts to give Hydrogen Sulphide. This reaction takes place at a temperature of 623 K H2 + S Hydrogen and Naphtha are assumed to be stored at 303 K Specific Heat capacity of naphtha is assumed to be 3.5235 kcal/kmol Specific Heat capacity of Hydrogen =(6.62+0.00081T) kcal/kmol K ∆H = ∑ ni ∫ C pi dT = 6.015915 x10 6 kcal hr i Hence heat required to raise their temperature from 303 K to
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