INTRODUCTION: This is a standard circuit which can be used to adjust the brightness of mains lights and the speed of AC motors. It uses a triac‚ diac and has a radio-frequency interference (RFI) noise suppression circuit built into it as well. The circuit controls the average power to a load through the triac by phase control. The AC supply is applied to the load for only a controlled fraction of each cycle. The triac is held in an OFF condition for a portion of its cycle then is triggered ON at
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components and less power. The 555 has three operating modes: * Monostable mode: in this mode‚ the 555 functions as a "one-shot". Applications include timers‚ missing pulse detection‚ bouncefree switches‚ touch switches‚ frequency divider‚ capacitance measurement‚ pulse-width modulation (PWM) etc * Astable - free running mode: the 555 can operate as an oscillator. Uses include LED and lamp flashers‚ pulse generation‚ logic clocks‚ tone generation‚ security alarms‚ pulse position modulation
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630 IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS‚ VOL. 20‚ NO. 4‚ APRIL 2012 Variation Trained Drowsy Cache (VTD-Cache): A History Trained Variation Aware Drowsy Cache for Fine Grain Voltage Scaling Avesta Sasan‚ Member‚ IEEE‚ Kiarash Amiri‚ Student Member‚ IEEE‚ Houman Homayoun‚ Member‚ IEEE‚ Ahmed M. Eltawil‚ Member‚ IEEE‚ and Fadi J. Kurdahi‚ Fellow‚ IEEE Abstract—In this paper we present the “Variation Trained Drowsy Cache” (VTD-Cache) architecture. VTD-Cache allows
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5680 IEEE TRANSACTIONS ON POWER ELECTRONICS‚ VOL. 29‚ NO. 11‚ NOVEMBER 2014 A Novel Soft-Switching Boost Converter With Magnetically Coupled Resonant Snubber Tianwen Zhan‚ Yingchao Zhang‚ Jintong Nie‚ Yongchang Zhang‚ Member‚ IEEE‚ and Zhengming Zhao‚ Senior Member‚ IEEE Abstract—A novel soft-switching boost converter with a magnetically coupled resonant snubber is presented in this paper. The passive snubber circuit‚ which is composed of two diodes‚ two capacitors‚ and one coupled inductor
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Technical Data Sheet Selection Guide Pressure Fundamentals and Transmitter Selection Reference-25 Reference-25 Pressure Fundamentals and Transmitter Selection Gage Absolute Gage Compound Barometric Range Pressure Total Vacuum (Zero or Absolute) FIGURE 1. Definition of Pressures. INTRODUCTION Selection Guide This document defines pressure and fundamentals of pressure measurement‚ as they relate to industry‚ and factors that should be considered in selecting
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yayavaram@yahoo.com EMBEDDED SYSTEMS UNITS IV & V Interfacing methods The interfacing of an I/O device to an embedded system is always an important task. Generally interfacing means ‚ both the physical connections of the hardware devices and the software routines that effect the data transfer .Due to incompatibility in speeds of the microcontroller and I/O devices ‚there is always a problem in data transfer between two devices .This leads to a concept
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Institute Of Engineering Studies (IES‚Bangalore) Formulae Sheet in ECE/TCE Department Communication Systems Amplitude Modulation : DSB-SC : u (t) = m(t) cos 2π t Power P = Conventioanal AM : u (t) = [1 + m(t)] Cos 2π t . as long as |m(t)| ≤ 1 demodulation is simple . Practically m(t) = a m (t) . () () Modulation index a = ( ) ‚ m (t) = | ( )| Power = + SSB-AM : → Square law Detector SNR = () Square law modulator ↓ = 2a / a → amplitude Sensitivity Envelope Detector R C (i/p) < < 1 / ≥ Frequency
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AP Physics Summer Assignment with Dr. Crymes Welcome to AP Physics B! It is a college level physics course that is fun‚ interesting‚ and challenging on a level you’ve not yet experienced. This assignment will review all of the prerequisite knowledge expected of you. There are 7 parts to this assignment. By taking the time to review and understand all parts of this assignment‚ you will help yourself acclimate to the rigor and pacing of AP Physics. The summer assignment will be “due” the
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Multiband Bandpass Filter using Multimode Resonator Bachelor of Engineering (Electrical and Electronic Engineering) Project Supervisor: Sie King Ting Student: Mohammad Faizan Suleman (4215400) DECLARATION I hereby declare that this report entitled “Multiband Bandpass Filter using Multimode Resonator” is the outcome of my own project work apart from quotations and citations which have been properly acknowledged. I also state that earlier it has not been or concurrently submitted for
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Chhattisgarh Swami Vivekanand Technical University‚ Bhilai SCHEME OF TEACHING AND EXAMINATION BE (ELECTRICAL ENGINEERING) III Semester Sl.No. Board of Studies Subject Subject Code Periods per week L T P Scheme of Exam Theory/Practical ESE CT TA Total Credit L+(T+P) /2 Marks Appl. Mathematics 324351(14) Mathematics III 3 1 80 20 20 120 4 2 Electrical Engg. 324352(24) Electrical Machines -I 4 1 80 20 20 120
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