that have time to check filter theory as shown in the college communications textbook. The pre-engineers are going to build a Narrow Band Pass Filter to compare theory with designed circuit behavior. By doing this the students will be able to better understand the theory based calculations and build hard wired circuits. When designing a band-pass filter‚ the parameters of interest are the gain at the mid frequency and the quality factor which represents the quality of the band-pass filter. A band-pass
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INTRODUCTION For years‚ infrared LED has been merely a system for piping light around corners and into the inaccessible places to allow the hidden to be lighted. But now‚ infrared LED has evolved into a system of significantly greater importance and use. Throughout the world‚ it is now being used to transmit voice‚ television and data signals as light waves. Its advantages as compared with conventional coaxial cable or twisted wire pairs are manifold. As a result‚ millions of dollars are being spent
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4017B Decade counter (5-stage Johnson counter) Navigation The Beastie Zone contains detailed information about lots of useful integrated circuits‚ including test circuits with easy to follow prototype board layouts... | | | 1. Pin connections | More updated pages... | 2. What is a decade counter? | DDE2 : Logic Gates | 3. Basic operation | DDE3 : Astables | 4. RESET and ENABLE inputs | DDE4 : Monostables | 5. Sequencing | | 6. Inside the 4017 | Safety Lights
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state-of-the-art high power LEDs bear little resemblance to early LEDs (see‚ for example‚ Philips Lumileds) WORKING: How this project will work? Press the push switch to ’throw ’ the dice: this makes the circuit rapidly cycle through the dice numbers so that an
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to separate signals‚ passing those of interest‚ and also can reject noise and attenuating the unwanted frequencies. In this project‚ there are three type of passive filters that will be built on printed circuit board (PCB)‚ to investigate the different result when applied as real circuit with the software design simulate as in theory. There are low pass filter‚ high pass filter and band pass filter. The design would be in second order Butterworth low pass‚ high pass and band pass filter using
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think about the people that made this technology possible. Throughout history‚ there have been only a handful of persons that have truly altered the way in which a society operates and lives. Jack Kilby ’s invention of the monolithic integrated circuit‚ or better known as the microchip‚ gave birth to a new technological field of modern microelectronics. His ingenious work at Texas Instruments over forty-five years ago‚ was a breakthrough that has led to the "sophisticated high-speed computers and
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1Introduction 5 2 Circuit diagram 6 3 Circuit components 7 3.1 LDR 7 3.2 Resistors 8 3.2.1 Color code 8 3.3 IR LED 9 3.4 LED 11 3.5 OP-AMP 12 3.5.1 OP AMP LM 324 13 3.6 Transistor 15 3.6.1 Transistor 2N2222 15 3.7 SCR 16 3.7.1 SCR C106MG 18 C106MG 19 3.8V Battery 19 3.9 Photo diode 20 Principle of operation 21 3.9.1 IR Photo diode 21 3.10 Switches 22 3.11 Buzzer 23 3.11.1Mechanical buzzer 24 3.11.2 Electromechanical buzzer 24 3.11.3 Piezo buzzer 24 Uses 25 4 Working of circuit 26 5 Result 27 6 Applications
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the proper voltage. (a) Compare electric circuit and magnetic circuit by their similarities and dissimilarities. (b) Derive an expression for the energy stored in an inductor of self inductance ‘L’ henry carrying the current of ‘I’ amperes. OR (b) A mild steel ring of 30 cm mean circumference has a cross-sectional area of 6 cm2 and has a winding of 500 turns on it. The ring is cut through at a point so as to provide an air-gap of 1 mm in the magnetic circuit. It is found that a current of 4 A in the
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a basic patent for miniature electronic calculators has been issued to Texas Instruments Incorporated. The patent is for personal-sized‚ battery-operated calculators which have their main electronic circuitry in a single integrated semiconductor circuit array‚ such as the popular "one-chip" calculators. | | This represents another in a series of landmark developments at Texas Instruments directly relating to miniature calculators. In 1958‚ Texas Instruments
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Hazards of Electricity 1. Electric Shock 2. Fire / Short Circuit 3. Electric Burns Confidential Slide Electric Shock It is sudden & accidental stimulation of the body’s nervous system by electric current. It is the result of passage of electric current through the human body Confidential Slide • Most widely recognised danger of electricity. • When a person standing on the ground touches a live wire‚ or touches a live tool or machine with poor insulation or hits a live cable‚ then a person
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