An intuitive description of the natural response of a resistorinductorcapacitor rlc circuit. Jan 10, 2018 this physics video tutorial provides a basic introduction into series rlc circuits containing a resistor, an inductor, and a capacitor. In this exercise, the dc steady state response of simple rl and rc circuits is examined. Introduction free oscillations in lc and rlc circuits for purposes of clarity, these experiment instructions will use lowercase letters, qt and it to denote timevarying circuit quantities.
Circuits laboratory experiment 3 ac circuit analysis 3. Using 12 switches, different connections between a resistor, an inductor and a capacitor, can be made. To understand the idea of resonance, and to determine the behavior of current and voltage in a driven rlc circuit above, below and at the resonant frequency prelab reading. These include as buffers on large transmission lines to reduce energy surges, on a smaller scale. In both cases, it was simpler for the actual experiment to replace the battery and switch with a signal generator. The experiment will also demonstrate the oscillatory behavior of an lc circuit. Be able to determine the step responses of parallel and series rlc circuits 3. This paper presents the remote experiment serial and parallel rlc circuit. Phase and impedance in an rlc circuit 1 phase and impedance in an rlc circuit objective the purpose of this experiment is to introduce you to some of the phenomena and terminology of ac circuits involving resistance, inductance, and capacitance. 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.
This experiment shows you some of the properties of circuits which contain resistors, capacitors, and inductors. Rlc networks are ac circuits that have resistors, capacitors, and inductors placed in the circuit to pass, reject, or control current. This laboratory manual for ac electrical circuit analysis, by james m. First, the generation, transmission, distribution, and consumption of electric energy occur under essentially sinusoidal steadystate conditions.
This video is about studying resonance in rlc series and parallel circuits. 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. This video explains how to calculate the resonant frequency. Rc, rl and rlc circuits 3 0 2 4 6 8 10 0 2 4 6 8 10 12 14 18 20 t v v 0 12 v 0 t 12 figure 4. Ac circuits rlc circuit introduction an inductor l is an important component of circuits, on the same level as resistors r and capacitors c. Determine the response form of the circuit natural response parallel rlc circuits natural response series rlc circuits step response of parallel and series rlc circuits. Parallel rlc circuit and rlc parallel circuit analysis. Richard feynman 19181988 objectives to observe free and driven oscillations of an rlc circuit. The student will measure the circuit current, the voltages across the resistor and the. To observe free and driven oscillations of an rlc circuit. Oscillation and damping in the lrc circuit 7 where n is the number of cycles per decay time. V rc, rl and rlc circuits v university of michigan.
To see the phase relationships between driving voltage and driven current in such a circuit at, below, and above the resonance frequency. This complete solution is designed for use with pasco capstone software. Rlc natural response intuition article khan academy. Calculate i 1, i 2, i 3 and vo for the circuit shown in figure 1 for f 1khz and f 10khz. This is an rlc circuit, which is an oscillating circuit consisting of a resistor, capacitor, and inductor connected in series. To determine the quality factor q of an rlc circuit. Circuits laboratory experiment 5 circuits containing inductance 5. Pdf experiment 10 rlc series circuit sufyan sarwar.
Circuits laboratory experiment 3 ac circuit analysis. As a single, lumped element, inductors find many uses. This laboratory is about studying resonance in rlc series and parallel circuits. Rlc circuits it doesnt matter how beautiful your theory is, it doesnt matter how smart you are. The third experiment demonstrates positive or negative. Determine the period t of the oscillations of the lrc circuit. To experimentally determine the resonance frequency in a series rlc circuit and compare this to the expected resonance value. We present an experiment for the student laboratory to measure this product. At resonance, that difference will be zero, and only r will limit the current flow in the circuit. If the experiment had been repeated with frequencies 10 times higher than. To study resonance in an rlc circuit by examining the current through the circuit as a function of the frequency of the applied voltage. The analysis of a series rlc circuit is the same as that for the dual series r l and r c circuits we looked at previously, except this time we need to take into account the magnitudes of both x l and x c to find the overall circuit reactance.
Since the current through each element is known, the voltage can be found in a straightforward manner. Instead of analysing each passive element separately, we can combine all three together into a series rlc circuit. Before examining the driven rlc circuit, lets first consider the simple cases where only one circuit element a resistor, an inductor or a capacitor is connected to a sinusoidal voltage source. Ece 2120 electrical engineering laboratory ii clemson university. An inductor l is an important component of circuits, on the same level as resistors r and capacitors. Discharge of a capacitor procedure assemble the circuit shown in figure 5. This experiment will be used to examine the sinusoidal frequency response of the. 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. Nonlinear damping of the lc circuit using antiparallel diodes. Series rlc circuits, resonant frequency, inductive reactance. The complete solution for examining the response of a series lrc circuit with various driving frequencies. In a series rlc circuit, the capacitor voltage and the inductor voltage are always 180 out of phase with each other. The student will measure the circuit current, the voltages.
To explore the time dependent behavior of rlc circuits, both driven with an ac function generator and undriven 2. This experiment will be used to examine the sinusoidal frequency response of the series and parallel to see at what frequency the current through an rlc series becomes or the voltage across a parallel rlc circuit reaches maximum value. The capacitor c1 and the lcr circuit form a differentiat. Before starting the first experiment, lets learn about some of the basic electronic components. A parallel rlc circuit driven by a constant voltage source is trivial to analyze. A series rlc circuit driven by a constant current source is trivial to analyze. While this is somewhat illuminating, it should be reminded that. In both cases, it was simpler for the actual experiment to replace the battery and switch with a signal generator producing a square wave. The current flowing through the resistor, i r, the current flowing through the inductor, i l and the current through the capacitor, i c. Dec 12, 2016 choosing a backup generator plus 3 legal house connection options transfer switch and more duration. Experiment 10 rlc series circuit resonance in an rlc series circuit objective. 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. In the above parallel rlc circuit, we can see that the supply voltage, v s is common to all three components whilst the supply current i s consists of three parts. Simplest way to solve for v is to use voltage divider equation in complex notation.
Electricity is a flow of subatomic very, very, very, small particles, called electrons. He only got a deflection of the galvanometer when the switch is opened or closed. The voltage through an rlc series circuit will be measured as a function of frequency for a fixed applied voltage. The voltage through an rlc series circuit will be measured as a function of frequency for a fixed applied. The graph to the right shows normalized values of current through a series rlc circuit at frequencies ranging from 0. The period is twice the time interval between successive zeroes.
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. Series rlc circuits consist of a resistance, a capacitance and an inductance connected in series across an alternating supply. Discharge of a capacitor procedure y assemble the circuit shown in figure 5 function generator. The experiment will demonstrate the transient behaviors of rc and rl circuits. While this is somewhat illuminating, it should be reminded that in general is only approximately equal to.
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