an internal resistance of 550-Ω is used in 0- to 500-mA ammeter. Find the value of the required shunt resistance. Ayrton Shunt Im Rm I - Im Rc Rb Ra I2 I3 I I1 Example 2.3: Compute the value of the shunt resistors for the circuit. Given that Rm = 1.2kΩ‚ Im =150 µA‚ I1=5mA‚ I2=50mA‚ I3=200mA. Check : Rsh = Ra + Rb + Rc always! + - Fig. 3: An Ammeter using Ayrton shunt. Ammeter Insertion Effects Example 2.4: A current meter having an internal resistance of 100Ω
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McClain Baxley A circuit is a closed loop that electrons can travel in. A source of electricity‚ such as a battery‚ provides electrical energy in the circuit. Unless the circuit is complete‚ that is‚ making a full circle back to the electrical source‚ no electrons will move. There are three essential parts to a true circuit. These include electrical devices. An electrical device is a device that resists the flow of energy. Another electrical device that a successful circuit must have is a source
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test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the tester. The tester consists of an indicator in series with a source of electrical power - normally a battery‚ terminating in two test leads. If a complete circuit is established between the test-leads‚ the indicator is activated (the indicator may be an electric light or a buzzer)
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A clamper is an electronic circuit that fixes either the positive or the negative peak excursions of a signal to a defined value by shifting its DC value. The clamper does not restrict the peak-to-peak excursion of the signal‚ it moves the whole signal up or down so as to place the peaks at the reference level. A diode clamp (a simple‚ common type) consists of a diode‚ which conducts electric current in only one direction and prevents the signal exceeding the reference value; and a capacitor which
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that any resistive circuit or network‚ no matter how complex‚ can be represented as a voltage source in series with a source resistance. It is used to simplify the load analysis of series-parallel circuits. 2. What is VTH ? How is it measured? Thevenin voltage. In a series-parallel circuit is the voltage present at the output terminals of the circuit when the load is removed. Even though it has a new name VTH is nothing more than the no-load output voltage VNL for the circuit. Vth can be found
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Description Function Generator 33220A Provides a voltage/current and allows adjustments to voltage‚ current‚ amplitude‚ resistance as well as other factors. Can emulate a current going through a circuit. Hand-Held Multi-Meter Measures the resistance/voltage/current of an element in a circuit. Can also measure the values of a diode/resistor by outputting a 1mA current through the wires. BNC to Alligator Multi-Meter Test Clips Bread Board Power Supply A constant power source
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Industrial Research (CSIR)‚ a premier technical body. y minor project in the 3rd year of my undergrad program on Infrared Remote Control Switch involving design/realization of the circuit for controlling electrical home appliances using IR sensors in an operating range of 10 meters gave me a hands-on experience in circuit design and analysis. My projects on Temperature Controlled clothing‚ Image / Signal processing and the final year project on Automatic Number Plate Recognition strengthened my knowledge
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the challenges immigrants have to face when they migrate to another country. Learning a new language it’s difficult and frustrating as well as communicating with one another and understanding what other people are trying to say. In the story The Circuit‚ by Francisco Jimenez we saw how the protagonist‚ Panchito struggles on his first day of school. He is not able to talk and interact with other students because he didn’t know how to speak their language. As an immigrant‚ when I just came to this
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To generate the control signals we have developed a DTMF Transmitter (Tx.)/ Receiver (Rx.) circuit. To generate DTMF signals we have used UM91214 DTMF generator which sends DTMF signals to the FM Tx. This FM Tx. in turn sends signals to FM Rx. Presently we have developed the system for a range of 1 km and tested up to 100 m‚ but it could easily be extended. At the receiving end we have standard FM Rx circuit which receives the DTMF and sends to DTMF decoder IC CM8870. The output of the CM8870 is in
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purpose we are studying the waveforms of a single active bridge converter and trying to understand how the soft switching takes place. The basic advantage of the design is that no external circuit is required to facilitate the ZVS switching‚ the leakage reactance of the transformer that produces hindrances in other circuits is used for
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