Et 242 circuit analysis ii series resonance boylestad14 figure 20. Also in series resonance circuits the qfactor gives the voltage magnification of the circuit, whereas in a parallel circuit it gives the current magnification. Current in the resistor is equal to the total circuit current. Q factor and bandwidth of a resonant circuit chapter 6 resonance pdf version. Unlike the series resonance circuit, the resistor in a parallel resonance circuit has a damping effect on the circuits bandwidth. I have just put together this resource for my class. Resonance in series and parallel circuits guided by. This paper will try to give an alternative treatment of the subject parallel rlc circuits and resonance in parallel rlc circuits from the physics curricula for the xith grade from romanian highschools, with an emphasis on practical type circuits and their. Resonance in series and parallel circuits slideshare. Ppt parallel resonance powerpoint presentation free to. More formally, q is the ratio of power stored to power dissipated in the circuit reactance and resistance. Et 242 circuit analysis ii parallel resonance boylestad 2. Which of the following is true at resonance in lc circuits.
Discussion of series and parallel resonance phenomena in. However, this is not the case since, for the majority of parallel resonant circuits, the quality factor of the coil ql is sufficiently large to permit a number of. Ppt about the qfactor in series and parallel ac circuits slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The series and parallel resonance on lc circuit differs. Ppt resonators series resonance and parallel resonance. Et 242 circuit analysis ii parallel ac circuits analysis boylestad. Series and parallel resonance the resonant circuit is a combination of r, l, and c elements having a frequency response. Bandwidth for either series or parallel resonant circuits is the range of frequencies. Resonance frequency of combined seriesparallel circuit.
This formula is applicable to series resonant circuits, and also parallel resonant circuits if the resistance is in series with the inductor. What current will flow in a series circuit consisting of 20, 10 and 30 resistor. Frequency response, bode plots, and resonance linear circuits behave as if they. A higher value for this figure of merit corresponds to a more narrow bandwidth, which is desirable in many applications.
To study the frequency response of series and parallel qfactor resonant circuits are used. It shows both the standard circuit symbols, as well as pictures, complete with batteries, light bulbs, and wires. Series and parallel resonance 1 introduction objectives to introduce frequency response by studying the characteristics of two resonant circuits on either side of resonance overview in this experiment, the general topic of frequency response is introduced by studying the frequencyselectivity characteristics of two specific circuit structures. Reactive component of current are equal i c i l sin circuit. Rlc resonant circuits andrew mchutchon april 20, 20. Alter the amplitude and phase of each component depending on its frequency. Bandwidth for either series or parallel resonant circuits is. Seriesparallel circuits if we combined a series circuit with a parallel circuit we produce a seriesparallel circuit. Alternatively, for fixed values of l and c, series. In a series circuit, every device must function for the circuit to be complete. Resonance in series and parallel rlc circuit electrical. Series parallel circuits are typically used when different voltage and current values are required from the same voltage source. Series resonance powerpoint presentation for electrical engineering.
If you continue browsing the site, you agree to the use of cookies on this website. If so, share your ppt presentation slides online with. You must be able to calculate the resonant frequency for arbitrary rlc circuits. A sinusoidal voltage v rms value sends a current i through the circuit. Therefore, v r v supply and it is for this reason that series resonance circuits are known as voltage resonance circuits, as opposed to parallel resonance circuits which are current resonance. Chapter 4 resonance circuits ppt video online download. This is an original powerpoint animation that demonstrates the different between a series circuit and a parallel circuit. Chapter 6 frequency response, bode plots, and resonance. Then in a series resonance circuit as v l v c the resulting reactive voltages are zero and all the supply voltage is dropped across the resistor.
For equipment, each lab station should include a dual channel oscilloscope preferably digital, a function generator and a quality dmm. If each r, l and c is doubled from its original value, the new qfactor of the circuit is. The q, or quality, factor of a resonant circuit is a measure of the goodness or quality of a resonant circuit. A series rlc circuit has a resonant frequency of hz. Consider an inductor of l henry having some resistance of r ohms connected in. You are already familiar with the concept of resonance. Series and parallel internal resistance for an inductor. Series resonance in the rlc series circuit, when the circuit current is in phase with the applied voltage, the circuit is said to be in series resonance. Content series resonance parallel resonance important parameters resonance frequency, o halfpower frequencies, 1 and 2 bandwidth, quality.
A higher value for this figure of merit corresponds to a more. Resonance series and parallel topicwise gate questions. The analysis of parallel resonant circuits is significantly more complex than encountered for series circuits. Let us understand the parallel resonance with the help of a circuit diagram shown below.
First contribution i have uploaded please let me know if its of any use. Resonance occurs when the reactance of an inductor balances the reactance of a capacitor at some given frequency. A seriesparallel circuit, or combination circuit, combines both series and parallel connections. Abstract 1 the series and parallel resonances of an antennas input impedance are explained through the theory of characteristic modes cm. Parallel resonance and parallel rlc resonant circuit. The bandwidth for parallel circuits is the frequency range between frequencies where the power is twice the power at resonance. In this video, you will learn about the resonance in parallel rlc circuit. Some text may show x and r interchanged in the q formula for a. The q factor is defined in the same way as in series resonance. The animation shows what happens when a bulb is removed from e. Parallel resonance means when the circuit current is in phase with the applied voltage of an ac circuit containing an inductor and a capacitor connected together in parallel. Q factor and bandwidth of a resonant circuit resonance. In a parallel tank lc circuit, this means infinite impedance at resonance. As you can see, the resonant circuit appears to amplify the voltages.
Seriesparallel resonance circuit authorstream presentation. Analyze a circuit for parallel resonance analyze seriesparallel rlc circuits determine the bandwidth of resonant circuits. Resonance series and parallel topicwise gate questions on network theory from 2003 2003 1. The resonance condition arises in the series rlc circuit when the inductive reactance is equal to the capacitive reactance x l x c or x l x c 0. The series rlc resonance circuit introduction thus far we have studied a circuit involving a 1 series resistor r and capacitor c circuit as well as a 2 series resistor r and inductor l circuit. In both cases, it was simpler for the actual experiment to replace the battery and switch with a signal generator producing a square wave. Since the parallel resonant circuit can draw a very small current and power from the mains, therefore, it is also called as rejector circuit. Series and parallel circuits series circuits parallel circuits calculating equivalent resistances in series circuits calculating equivalent resistances in parallel circuits experiment time part 1 experiment time part 2 rules of thumb for series and parallel resistors series and parallel capacitors experiment time.
A series resonant circuit has the capability to draw heavy current and power from the. Impedance of series rlc circuits a series rlc circuit contains both inductance and capacitance. Ppt parallel resonance powerpoint presentation, free download. It should be mind that the qfactor of a parallel resonance circuit is the inverse of the expression for the qfactor of the series circuit.
Some of the material is available freely elsewhereit is not all my own work. Some parallel circuits can be used as notch filters to supress a certain frequencies. In simple reactive circuits with little or no resistance, the effects of radically altered impedance will manifest at the resonance frequency predicted by the equation given earlier. Parallel resonance is the point where x l x c at high. At resonance there will be a large circulating current between the inductor and the capacitor due to the energy of the oscillations, then. The current and the voltage in the circuit must be in phase at the resonance frequency. Current in the inductor is equal to the current in the capacitor. So, in this video, you will learn the following things for the parallel resonant circuits. Thevenins theorem, maximum power transfer theorem, and concludes with series and parallel resonance. The double lines between r1 and r2 is a symbol for parallel.
Resonators series resonance and parallel resonance is the property of its rightful owner. The parallel resonant circuit has the basic configuration in fig. Because the branch with the resistor and the inductor is parallel to the branch with the capacitor, we obtain the total admittance y as a sum of the particular admittances. Video lecture on parallel resonance in rlc circuit of chapter ac circuits analysis of subject basic electrical engineering for firstyear engineering students. In parallel circuits, each light bulb has its own circuit, so all but one light could be burned out, and the last one will still function. That means that the imaginary component of the complex admittance y must be zero. Group members hardik panchal 120119115 vivek panchal 120119122 parth panchal 120119120 3. A parallel circuit containing a resistance, r, an inductance, l and a capacitance, c will produce a parallel resonance also called anti resonance circuit when the resultant current through the parallel combination is in phase with the supply voltage. Ac circuits resonance series and parallel circuits.
Ac circuits resonance free download as powerpoint presentation. Seriesparallel circuits are typically used when different voltage and current values are required from the same voltage source. The basic format of the series resonant circuit is a series rlc combination in series with an applied voltage source. In such a resonant circuit where it is in series resonance, the current will be maximum and offering minimum impedance. Series rlc resonant circuits electronics tutorials. Conditions of parallel resonance inductor and capacitor are in parallel. Network theory series resonance resonance occurs in electric circuits due to the presence of energy storing elements like inductor and capacitor. Formula for bandwidth bandwidth for either series or parallel resonant circuits is the range of frequencies between the upper and lower cutoff frequencies. We are showing for the first time that the parallel resonance phenomenon corresponds to the interaction of at least two nearby cm, each having eigenvalues of opposite sign. To see the resonance e ect consider the ratio of the voltage across the reactive components to the input voltage.
Mechanical department elements of electrical engineering active learning assignment topic. Separate the input signal into components having various frequencies. If one bulb burns out in a series circuit, the entire circuit is broken. The series and parallel resonance on lc circuit differs in that. Series resonance ppt electrical impedance inductor scribd. Note that if the parallel circuits impedance is at its maximum at resonance then consequently, the circuits admittance must be at its minimum and one of the characteristics of a parallel resonance circuit is that admittance is very low limiting the circuits current. Series resonance at any desired frequency f 0 may be obtained by varying either l or c or both.
One of the most important secondorder circuits is the parallel rlc circuit of figure 1 a. Parallel resonance in rlc circuit ac circuits basic. Resonance in parallel rlc circuit explained youtube. A series rlc circuit has a resonance frequency of 1 khz and a quality factor q 100. Add the altered components to produce the output signal. Similar to the series circuits, when resonance occurs in a parallel rlc circuit the resonance condition equation 1 leads to other relationships or properties. A series parallel circuit, or combination circuit, combines both series and parallel connections.
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