Audio/Video Systems PRELIM EXAM – Reviewer December 2012 For ECT04A1 ( prepared by Sir Felixberto M. Gonzaga Jr.) * It blanks out retrace for each H line by making video signal go to the black blanking level at 15‚750 Hz. * horizontal blanking pulses * It includes the camera signal with the picture information‚ sync pulses and blanking pulses. * composite video signal * It times the scanning for each H line at 15‚750 Hz. * horizontal
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RF Based Wireless Electronic Stethoscope Mubashir_ul_Hasan‚ Zaryab Qazi‚ Sander Ali Student‚ (IICT) University Of Sindh Jamshoro‚ Sindh‚ Pakistan Engr_mubashir41@yahoo.com Student‚ (IICT) University Of Sindh Jamshoro‚ Sindh‚ Pakistan Zaryabqazi@yahoo.com Lecturer‚ (IICT) University Of Sindh Jamshoro‚ Sindh‚ Pakistan Sandar.ali@usindh.edu.pk Abstract Direct way to diagnose the diseases is the use of stethoscope. In this paper the working and making of low cost Wireless electronic stethoscope
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for IR transmitter and receiver‚ amplifier circuit‚ trigger circuit ‚ driver circuit and buzzer. The anode of the transmitter and receiver are connected to the 5 V power supply and cathodes are connected to the ground. When the bias voltage applied to the security alarm circuit‚ the transmitter emits the Infra-red ray. Then this connected to amplifier to amplify the low sound coming from transmitter. [pic] The amplifier tansmits the signal to the switching
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Aero2 Signals & Systems (Part 2) Notes on BJT and transistor circuits Bipolar Junction Transistors • Physical Structure & Symbols • NPN n-type Emitter region p-type Base region n-type Collector region C Collector (C) B E (b) Emitter (E) Emitter-base junction (EBJ) Base (B) (a) Collector-base junction (CBJ) • PNP - similar‚ but: • N- and P-type regions interchanged • Arrow on symbol reversed • Operating Modes Operating mode Cut-off Active Saturation Reverse-active EBJ Reverse
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BROADBAND AMPLIFIER DESIGN FOR OPERATION IN Ku BAND LINGAPRASANTH.M. (E/02/163) RAVITHARAN R. (E/02/229) RAMESH SELVARAJ (E/02/245) 2006/ 2007 ACKNOWLEDGEMENT We wish to acknowledge our project supervisor Dr.A.U.A.W.Gunawardena who gave enormous help to success this project. At the mean time we would like to thank Dr.Chandima Ekanayake – Coordinator‚ Final year undergraduate project. CONTENTS CHAPTER 01 Introduction 01 CHAPTER 02 Literature Review 02 CHAPTER
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Operational Amplifier Chapter No. 3 Differential Amplifiers Operational Amplifiers: The operational amplifier is a direct-coupled high gain amplifier usable from 0 to over 1MH Z to which feedback is added to control its overall response characteristic i.e. gain and bandwidth. The op-amp exhibits the gain down to zero frequency. Such direct coupled (dc) amplifiers do not use blocking (coupling and by pass) capacitors since these would reduce the amplification to zero at zero frequency. Large
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ECE 4781 HW#02 INTRODUCTION TO OPERATIONAL AMPLIFIERS Abhishek Akkeneni 902667190 INTRODUCTION – WHAT ARE OPERATIONAL AMPLIFIERS? An operational amplifier ("op-amp") is a DC-coupled high-gain electronic voltage amplifier with a differential input and‚ usually‚ a single-ended output. An op-amp produces an output voltage that is typically hundreds of thousands of times larger than the voltage difference between its input terminals.[1] Op-amps are among the most widely used electronic
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Operational Amplifiers Utilizing the circuit designs perfected for recently introduced Quad Operational Amplifiers‚ these dual operational amplifiers feature 1) low power drain‚ 2) a common mode input voltage range extending to ground/VEE‚ 3) single supply or split supply operation and 4) pinouts compatible with the popular MC1558 dual operational amplifier. The LM158 series is equivalent to one–half of an LM124. These amplifiers have several distinct advantages over standard operational amplifier types
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LNA Design Iulian Rosu‚ YO3DAC / VA3IUL http://www.qsl.net/va3iul/ An LNA combines a low noise figure‚ reasonable gain‚ and stability without oscillation over entire useful frequency range. The Low Noise Amplifier (LNA) always operates in Class A‚ typically at 15-20% of its maximum useful current. Class A is characterized by a bias point more or less at the center of maximum current and voltage capability of the device used‚ and by RF current and voltages that are sufficiently small relative
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PTU/BOS/EC/101/08-05-2004/BATCH 2004 Punjab Technical University‚ Jalandhar B.Tech. Electronics & Communication Engg. Study scheme 3rd Semester Course code AM-201 EE-201 EC-201 EC-203 Course Title Applied MathematicsIII Network Analysis & Synthesis Electronics Devices & Circuits Electronic Measurement & Instrumentation L 4 3 3 3 T 1 2 1 1 P 0 0 0 0 Int. 40 40 40 40 Ext. 60 60 60 60 TOTAL 100 100 100 100 Object Oriented CS –252 Programming using C++ Lab.-I (Electronic EC-205 Devices & Networks)
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