Series lcr circuit has applications in radio and communication engineering. In fact, t 0 ic t reaches its maximum before by one quarter of a cycle vc t. This is an rlc circuit, which is an oscillating circuit consisting of a resistor, capacitor, and inductor connected in series. Ac circuits rlc circuit introduction an inductor l is an important component of circuits, on the same level as resistors r and capacitors c. Natural response of parallel rlc circuits the problem given initial energy stored in the inductor andor capacitor, find vt for t. V rc, rl and rlc circuits v university of michigan. Ningrum mechatronicseepisits impedance of series rlc circuits a series rlc circuit contains both inductance and capacitance since x l and x c have opposite effects on the circuit phase angle, the total reactance x totis less than either individual reactance c l tot x x x impedance of series rlc circuits when x. Construct the circuit shown in figure 1 and measure i 1, i 2, i 3 and vo.
Mar 09, 2015 using ni multisim to design and simulate rlc series resonance dr. Dec 20, 2015 its about rlc circuit used in our daily life slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In a series rlc circuit containing a resistor, an inductor and a capacitor the source voltage v s is the phasor sum made up of three components, v r, v l and v c with the current common to all three. Notice that at, the voltage across the capacitor is zero while the current in the circuit is at a maximum.
Record the experimental inductor voltage in table 1. Thus, we say that the current leads the voltage by. Using ni multisim to design and simulate rlc series resonance. Notice that the current has the same amplitude and phase at all points in the series rlc circuit.
The v o voltage on the resistor is proportional to the series rlc circuit. This paper presents the remote experiment serial and parallel rlc circuit. The frequency for which the rms voltage attains a maximum. The circuit can be thought of as being in two parts. Similarly, v crms is the rms voltage across the capacitor.
Pdf this paper presents the remote experiment serial and parallel rlc circuit. In the execution of the experiment, highest benefit is gained if someone can distinguish. The circuit has two initial conditions that must be satisfied, so the solution for vt must have two constants. To measure the resonance frequency and the quality factor of a driven rlc circuit by creating a resonance frequency response curve. To observe the net effect of the reactance within the series rlc circuit. Procedure y assemble the circuit shown in figure 5. To determine the impedance of a series rlc circuit used in ac application. The parallel rlc circuit is the exact opposite to the series circuit we looked at in the previous tutorial although some of the previous concepts and equations still apply. Series rlc circuits consist of a resistance, a capacitance and an inductance connected in series across an alternating supply. Pdf experiment 10 rlc series circuit sufyan sarwar. To see the phase relationships between driving voltage and driven current in such a circuit at, below, and above the resonance frequency. The rlc series circuit is defined as when a pure resistance of r ohms, a pure inductance of l henry and a pure capacitance of c farads are connected together in series combination with each other.
The name of the circuit is derived from the letters that are used to denote the constituent components of this circuit, where. To show the three equivalent response of a series rlc circuit ii. The figure shows the current and emf of a series rlc circuit. Ithe figure shows the current and emf of a series rlc circuit. The transient behavior of rc circuits is also tested. Discharge of a capacitor procedure y assemble the circuit shown in figure 5 function generator. Rlc series circuit when a pure resistance of r ohms, a pure inductance of l henry and a pure capacitance of c farads are connected together in series combination with each other then rlc series circuit is formed. Rlc series circuit if the angular frequency of an ac signal applied from the function generator is. Parallel rlc circuit and rlc parallel circuit analysis.
Amfm radio with analog tuners use a rlc circuit to tune a radio frequency. Circuits laboratory experiment 3 ac circuit analysis. Oscillation and damping in the lrc circuit introduction in this laboratory you will construct an lrc series circuit and apply a constant voltage over it. The name of the circuit is derived from the letters that are used to denote the constituent components of this circuit, where the sequence of the components may vary from rlc. Rlc circuit no generator like the lc circuit some energy must initially be placed in this circuit since there is no battery to drive the circuit.
Theory overview the dc steady state response of rl and rc circuits are essential opposite of each other. Dec 03, 2017 to tune the rlc network for resonance and determine resonant frequency, bandwidth and q factor. Circuits laboratory experiment 3 ac circuit analysis 3. The experiment will also demonstrate the oscillatory behavior of an lc circuit. Capacitors a capacitor is a passive electronic component that stores energy in the form of an electrostatic field. Pdf lab 8 rlc resonance margaret wettergreen academia.
Rlc series circuit introduction the objective of this experiment is to study the behavior of an rlc series circuit subject to an ac input voltage. Chapter 21 19 power in ac circuits ipower formula irewrite using icos. To tune the rlc network for resonance and determine resonant frequency, bandwidth and q factor. In both cases, it was simpler for the actual experiment to replace the battery and switch with a signal generator producing a square wave.
Calculate i 1, i 2, i 3 and vo for the circuit shown in figure 1 for f 1khz and f 10khz. In rl series circuit, only l is the component that depends on frequency. In this experiment, the general topic of frequency response is introduced by studying the frequencyselectivity characteristics of two specific circuit structures. In this experiment only the overdamped and underdamped responses are. Use pspice to determine i 1, i 2, i 3, and vo in figure 1 at f 1khz and f 10khz.
The first is referred to as the seriesresonant circuit and the second as the parallelresonant circuit. Rc, rl and rlc circuits 2 procedure to learn how to operate the oscilloscope and function generator, set the function generator for square wave output and connect the generator to the vertical input of the oscilloscope. Richard feynman 19181988 objectives to observe free and driven oscillations of an rlc circuit. 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. Again we will do this by placing a charge on the capacitor since there is a resistor in the circuit now there will be losses as the energy passes through the resistor.
However, the analysis of a parallel rlc circuits can be a little more mathematically difficult than for series rlc circuits so in this. As all the three elements are connected in series so, the current flowing through each element of the circuit will be the same as the total current i flowing in the circuit. In this circuit, the resistance includes every known resistance r in the circuit, which can come from the internal resistance of the generator, the resistance of the inductor, and any real resistors connected. Note, currents are measured indirectly by measuring the voltage across an. They can be used to select a certain narrow range of frequencies from the total spectrum of ambient radiowaves.
Rlc series and parallel connection lab experiment in hindi. There is an angle difference between voltage and current by 90 degree. For the simple parallel rlc circuit shown in gure 5 this is just equal to the rms supply voltage but for the series rlc circuit it is given by a potential divider rule. The first is referred to as the series resonant circuit and the second as the parallelresonant circuit. Adjust the oscilloscope to obtain each of the patterns shown in figure 3. In this lab we will only discuss series rlc circuits. Repeat the experiment using for the series resonant circuitry in figure 3, and use l 33mh and c 0. Using 12 switches, different connections between a resistor, an inductor and a capacitor, can be made. One of them is the program series rlc circuit whose. Also, compute and record the percent deviation between experimental and theory in table 1. The student will measure the circuit current, the voltages. On the other hand, the instantaneous voltage across each of the.
There is no difference between voltage and current on r. An rlc circuit is an electrical circuit consisting of a resistor r, an inductor l, and a capacitor c, connected in series or in parallel. The properties of the resonant circuit can be examined using this arrangement because the impedance of a resonant circuit is frequency dependent. Rlc circuits it doesnt matter how beautiful your theory is, it doesnt matter how smart you are. Consider a resistor with resistance r in series of a capacitor with capacitance c, together connected to a. Electronics handbookcircuitsrlc series analysis wikibooks.
The voltage through an rlc series circuit will be measured as a function of frequency for a fixed applied voltage. To increase the rate at which power is delivered to the resistive load, which option should be taken. You will view the voltage drop over the various elements of the circuit with the oscilloscope. To find the dielectric constant of glass sheet by using rlcseries circuit. Be able to determine the step responses of parallel and series rlc circuits 3. The circuit should reach steady state very quickly, in much less than one second. As all the three elements are connected in series so, the current flowing in each element of the circuit will be same as the total current i flowing. Be able to determine the responses both natural and transient of second order circuits with op amps. The voltage v r measured across the resistor of the rlc series circuit are predicted to look like this. Frequency response of rlc resonance circuit, from eq. Ac circuits laboratory report experiment 4 series rlc circuit.
An illustrative example is given with spice simulation. Experiments for first year electrical engg lab 201516 dept of electrical engineering, shri ramdeobaba college of engineering and management, nagpur 4400 india page 6 experiment no aim. A series rlc circuit can be modeled as a second order differential equation. To experimentally determine the resonance frequency in a series rlc circuit and compare this to the expected resonance value. For the circuit shown in figure 1, if the capacitor is initially uncharged, and if v in undergoes a step change from 0 to v, the capacitor voltage for t 0 will be given by. Doing physics with matlab resonance circuits series rlc circuits matlab download directory matlab scripts crlcs1. Experiments for first year electrical engg lab 201516. Oscillation and damping in the lrc circuit 1 experiment 2. The inductor is based on the principle of inductance that moving charges create a magnetic eld the reverse is also true a moving magnetic eld creates an electric eld. Its about rlc circuit used in our daily life slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. For the circuit shown in figure 1, if the capacitor is initially uncharged, and if v in undergoes a step change from 0 to v, the capacitor voltage for t 0 will be given by input cause lts output effect time seconds. Using ni multisim to design and simulate rlc series resonance dr.
An inductor l is an important component of circuits, on the same level as resistors r and capacitors. Again all the initial variables and values are remain the same. Using ni multisim to design and simulate rlc series. Pdf this article explains the analysis of series rlc circuit driven by a step voltage input. The student will measure the circuit current, the voltages across the resistor and the. Once the capacitor is discharged, the inductor resists any change in the. Repeat the experiment by placing a glass sheet between the plates of. First, the generation, transmission, distribution, and consumption of electric energy occur under essentially sinusoidal steadystate conditions. Experiment 10 rlc series circuit resonance in an rlc series circuit objective. Try changing the amplitude and repetition frequency of the generator and observe. If you continue browsing the site, you agree to the use of cookies on this website.
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