circuits. Whenever there is loud sound produced near the electret condenser mic‚ pin 2 of 555 gets triggered and it switches on the LED. The LED remains on for a definite time determined by Resistor and Capacitor. We can adjust the sensitivity of the circuit using a variable resistor in place of fixed resistor R5. The various components used in making clap switch are listed below: - 1. 470R‚ 330R‚ 1K‚ 4.7K & 47K 2. 100nF x (2) & 100mF/10mF 3. BC547 x (2) 4. Electric Condenser Mic 5. 555 Timer
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previously removed. 6. Finally calculate the current flowing through RL by using the equation‚ I = Vth / (Rth + RL) or I = Voc / (Ri + RL) Example 1 Convert the circuit shown in Figure (a)‚ to a single voltage source in series with a single resistor. Solution Obviously‚ we have to find the equivalent circuit. For this purpose‚ we have to calculate
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ELECTRONIC ELECTROSCOPE Abstract— An electroscope is the instrument used to detect charged bodies. Here‚ an electronic version of the scope that is more sensitive as compared to its conventional counterpart and which helps indicate the polarity of charge has been described. This circuit consumes very low quiescent power and reliably indicates
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OHM’S LAW INTRODUCTION Ohm’s law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points‚ and inversely proportional to the resistance between them provided the temperature remains constant. The mathematical equation that describes this relationship is: where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and
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Unit 5 The objective of this lesson is to: Give definition in astable‚ monostable‚counters To be able to familiarize the functions and use of a monostable Circuit To be able to know how to create and manipulate the parts or the materials that are going to be use during and after this activity. The Astable Multivibrator Regenerative switching circuits such as Astable Multivibrators are the most commonly used type of relaxation oscillator because not only are they simple‚ reliable and ease of
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devoted to the science and technology of all types of electronic components. The journal publishes experimental and theoretical papers on such topics as electron tubes‚ transistors‚ integrated circuits‚ semiconductor materials‚ thick-film materials‚ resistors‚ capacitors‚ solid-state memories‚ and thin-film materials processes. SCHEMATIC SYMBOL AND FUNCTION. Name | Electrical Symbol | Alternate Symbol | Function Description | ground | | | A connection to earth. Used for zero potential reference
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How To Make An IR Mini Emitter Tools Parts Stanley knife‚ or very sharp blade Screw cover Small drill bit Infra red LED (Maplin code CH10) Hot glue gun Screened cable Soldering iron and solder 3.5mm mono jack plug (Maplin code HF81) Step 1 Start by using a very sharp knife to remove the small plastic hinge joining the two sections of the screw cover together. Step 2 Using a small‚ sharp drill bit (I used 3mm as this matched the diameter of the cable I was using)‚ make a hole in
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5. Operational Amplifiers Introduction In many electronic circuits‚ the signals (voltage differences) that are generated and manipulated are very small. Therefore‚ amplification is often essential. When playing a CD for instance‚ the signals generated in the CD player are quite small and will not adequately drive a speaker system. The signals from the CD player are therefore passed into the stereo amplifier (which often comes as a tuner/amplifier combination in modern home stereo systems)
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Patents Publication number US5883445 A Publication type Grant Application number US 08/731‚878 Publication date Mar 16‚ 1999 Filing date Oct 22‚ 1996 Priority date Oct 22‚ 1996 Fee status Lapsed Also published as CA2213176A1 Inventors Frank T. Holman Original Assignee Holman; Frank T. Export Citation BiBTeX‚ EndNote‚ RefMan Patent Citations (15)‚ Referenced by (3)‚ Classifications (13)‚ Legal Events (3) External Links: USPTO‚ USPTO Assignment‚ Espacenet Power sharing device US 5883445 A Abstract
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Introduction Background Theory The usual equation for measuring electric current flowing through a series is I = V/R. The current flowing in a series is affected by the voltage and the resistor that is also creating the series. Electric current is a flow of electric charge through a conductive medium. These charge is in a form of moving electrons in a wire. The SI unit for electric current is ampere (A) and can be measured by using a device called ammeter. Change in temperature can change
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