sources of error in rc circuit lab

after doing some work with RC circuits, ive got results for the voltages, but on the third circuit, i used 2 resistors in parallel and instead of the voltage being lower than the theoretical like the others, it was higher can anyone help as to how and where i obtained this result (sources of error) many thanks in advance As shown in the figure below, the input voltage from the square-wave generator is monitored by channel one (CH 1) and the voltage across the capacitor is monitored by channel two (CH 2). 2. Construct the circuit shown in Figure 1 and measure I 1, I 2, I 3 and Vo. can store charge. Use PSpice to determine I 1, I 2, I 3, and Vo in Figure 1 at f = 1kHz and f = 10kHz. Notice that there are three sources of voltage in this picture. Those are the signal generator, the capacitor and the When you do source transformation, remember that the two circuits are equivalent only at the terminals of interest. following circuit. 3. 2.3 RC Circuit in the Frequency Domain In section 2.1 an RC circuit with only a discharging capacitor was examined. Typical circuit capacitors range from picofarads (1 pF = 10-12 F) to millifarads (1 mF = 10-3 F). In this limit my equation becomes: m m m 1 V V -V C =C I once again measure V and Vm using the oscilloscope. trendline equation, that is find the time constant RC and record these values in the appropriate Data Table. Setting Up the RC Circuit The RLC circuit board that you will be using consists of three resistors and two capacitors among other elements. 8. From this lab we know how to build a half wave rectifier circuit. The purpose was to study resonance in a series resistor-inductor-capacitor (RLC) circuit by examining the current through the circuit as a function of the frequency of the applied voltage. Notice that there are three sources of voltage in this picture. EE 233 Lab 1: RC Circuits Laboratory Manual Page 2 of 11 3 Prelab Exercises 3.1 The RC Response to a DC Input 3.1.1 Charging RC Circuit The differential equation for out( ) is the most fundamental equation describing the RC circuit, and it can be solved if the input signal in( … At time t=τ=RC (one time constant), the voltage across the capacitor has grown to a value: V t RC Vo e Vo e) 0.63Vo 1 ( = ) = (1− −1) = (1− = In this post we will take a comprehensive look at all of the factors that can lead to errors in a DC voltage measurement with a DMM and how to eliminate them so you can achieve the highest accuracy possible in your measurement. Calculate I 1, I 2, I 3 and Vo for the circuit shown in Figure 1 for f = 1kHz and f = 10kHz. The charging and discharging of a capacitor is the actual movement of electrons into and out of the capacitor. Consider the circuit shown in Figure 1. RC Circuits . Measurement of the Time Constant in an RC Circuit. In this lab we will use microfarad capacitors (1 μF = 10-6 F). 27-9 RC Circuits In preceding sections we dealt only with circuits in which the currents did not vary with time.Here we begin a discussion of time-varying currents. A detailed time-table will be provided at your first laboratory meeting. rc circuits course: phy156 section: 12919 student name: gamoi paisley lab partner: sarahi marquez, emmanuela tanis date: 10/24/2017 objective: to examine the II. I am currently enrolled in College Physics II and we just finished a lab on "The RLC Circuit". Ideal and actual low pass filter response. I have done an experimeny to investigate how the voltage across a capacitor, Vc varies as it charges and to find the capacitive time constant in a DC RC circuits and Study resonance in an AC inductor-capacitor circuit (AC LRC circuit). stored energy to keep the circuit constant until it runs out of energy. First-Order Circuits: The Source-Free RC Circuits V 0 • Since the capacitor is initially charged, we can assume that at time t=0, the initial voltage is: • Then the energy stored: * Note: B = H is an approximation. In figure 1 we've sketched a series RC circuit. Due to the presence of a resistor in the ideal form of the circuit, an RC circuit will consume energy, akin to an RL circuit or RLC circuit . Circuits with Resistance and Capacitance. Repeat the experiment using the unknown capacitor. An RC circuit is composed of a resistor and a capacitor, while an RL circuit is composed of a resistor and an inductor. why did the charging and discharging rates differ with charging being so much faster? Those are the signal generator, the capacitor and the Now the same circuit with alternating current (AC) will be examined. IV.3 Data DC voltage source to measure R internal for scope. Notes: As in all the ALM labs we use the following terminology when referring to the connections to the M1000 connector and configuring the hardware. The RC circuit (Resistor Capacitor Circuit) will consist of a Capacitor and a Resistor connected either in series or parallel to a voltage or current source. YOU MUST COMPLETE ALL SIX LABORATORY UNITS IN ORDER TO PASS THIS COURSE. Verify your transformed circuit with other circuit analysis techniques derived from Kirchhoff’s voltage and current laws, such as source transformation and voltage and current divider techniques. The objective of this Lab activity is to study the transient response of a series RC circuit and understand the time constant concept using pulse waveforms. (a) (b) Figure 2 (a) RC circuit (b) Circuit diagram for t > 0 Figure 8 shows a schematic for the circuit. While writing up your lab report, you will often have to mention various sources of errors that you encountered while doing your physics experiment that could’ve affected your final results. With the assumption that the measurement device for determining In practice, ... RL circuits with DC sources lab units of two weeks duration: waves, electrostatics, capacitors and dc circuits, magnetostatics, Faraday‟s law, and ac circuits. Capacitors and RC Circuits Name: Lab Partner: Section: 6.1 Purpose The purpose of this experiment is to investigate the physics of capacitors in circuits. EE101: RC and RL Circuits (with DC sources) M. B. Patil mbpatil@ee.iitb.ac.in ... an inductor behaves like a short circuit in DC conditions as one would expect from a highly conducting coil. Next we’ll continue studying DC circuits. Procedure: Figure 1: Series - Parallel RLC Circuit 1. In order to satisfy this limit we must have : ω >> 1/RC = 2800 rad/sec. An RC circuit is a circuit containing resistance and capacitance. I therefore choose f= 100Khz. The curve of the exponential rise in voltage with time during the charging process is illustrated in Figure 2. RC Circuit An RC circuit is a circuit with a resistor and a capacitor in series connected to a voltage source such as a battery. In this lab experiment we will measure the time constant τ of an RC circuit via three different methods. See Fig. the resistance R of the circuit connecting the plates and by the capacitance C of the capacitor (a measure of its ability to hold charge). In the ORCAD, use VPULSE as the Vs and set V1=5V, V2=-5V, TD=0, … Charging a Capacitor The capacitor of capacitance C in Fig.27-15 is initially uncharged.To charge it,we close switch S on point a.This completes an RC series circuit consisting of the In this lab we will use microfarad capacitors (1 µF = 10-6 F). The value of the input and output voltages can be found from the circuit with the concept of complex impedance (Z). As with circuits made up only of resistors, electrical current can flow in Now the same circuit with alternating current (AC) will be examined. A circuit with only one type of passive element that stores energy is called a first order circuit– or more specifically, in our case, an RC or RL circuit. Indeed, As presented in Capacitance, the capacitor is an electrical component that stores electric charge, storing energy in an electric field.. Max Power November 4, 2016 at 1:04 pm. The capacitor (initially uncharged) is connected to a voltage source of constant emf E. At t = 0, the switch S is closed. RC Circuits Consider the circuit shown in Figure 2. If you forget this, you can misinterpret the actual output value. For building we must choose a diode that can safely withstand the current the circuit will have to provide, and also the reverse bias voltage that will be applied to it. An RC circuit is defined as an electrical circuit composed of the passive circuit components of a resistor (R) and capacitor (C), driven by a voltage source or current source. the source. CIRCUITS LABORATORY EXPERIMENT 1 DC Circuits – Measurement and Analysis 1.1 Introduction In today's high technology world, the electrical engineer is faced with the design and analysis of an increasingly wide variety of circuits and systems. 6 below. I haven’t done any chemistry in awhile as most of my work has been in testing electrical circuits, but boy if you could have seen some of my early lab reports tou might find them a tad humorous. Attendance at all laboratory sessions is required. PRE-LAB Do the ORCAD simulations of both RC and RL circuits, calculate time constants and plot the resulting waveforms across C (in the case of RC) and the waveform of the current in the case of RL. Figure 1 - Diagram of an RC Circuit When the switch is in position 1, the voltage source supplies a current to the resistor and the capacitor. You will measure the voltage across the capacitor as it charges and discharges. However, underlying all of these systems at a fundamental level is the operation of DC circuits. In the last unit you saw that in a series circuit with a battery, 1. the current is the same through all elements, 2. changing one part of a series circuit changes the current in all parts of the circuit, 3. the voltage divides between the elements of the series and You will need this sheet to record your data. In theory you can, therefore, … Diodes are rated for maximum average forward current, + - V C + - USB Voltmeter Please print the worksheet for this lab. The quantity τ=RC is called the time constant. ME Lab Report 0 50.3 0 1 Ideal Response EC R Circuit E 0 E E 1 Actual Response b b io o i E E o i Figure 1. An oscilloscope is an invaluable tool for testing electronic circuits by measuring voltages over time, and Figure 5 shows the schematic for monitoring an RC circuit with an oscilloscope. I measure C1 with the capacitance meter in the lab. Figure 8 shows a schematic for the circuit. These types of circuits are also called as RC filters or RC networks since they are most commonly used in filtering applications. Figure 2: An RC circuit with power supply showing a charged capacitor. EENG223: CIRCUIT THEORY I • A source-free RC circuit occurs when its dc source is suddenly disconnected. RC Circuits Shivam Agarwal Lab Partner: Anton Draayer TA: Kunpeng Mu June 14, 2016 Introduction: This experiment had three investigations and the main goals of the experiment were to study currents and voltages in a simple RC circuit. • The energy already stored in the capacitor is released to the resistors. 2.3 RC Circuit in the Frequency Domain In section 2.1 an RC circuit with only a discharging capacitor was examined. You must COMPLETE all SIX laboratory units in order to PASS this COURSE also called as RC or... Can misinterpret the actual movement of electrons into and out of the time τ... Circuit with alternating current ( AC ) will be examined μF = 10-6 F ) signal generator, the and... Electric charge, storing energy in an electric field and AC circuits three resistors and two capacitors other... And discharging of a resistor and a capacitor is the operation of DC circuits networks since they are commonly. Data DC voltage source to measure R internal for scope types of circuits are also called as RC or... Rectifier circuit capacitance, the capacitor is released to the resistors: an RC via... Average forward current, can store charge circuits are also called as filters! Current ( AC ) will be examined is the operation of DC circuits,,... The lab of DC circuits two capacitors among other elements first laboratory meeting 2.3 RC via! Two weeks duration: waves, electrostatics, capacitors and DC circuits this. Value of the time constant τ of an RC circuit the Frequency Domain in section 2.1 RC. The actual movement of electrons into and out of energy be found from the circuit shown in Figure we! During the charging and discharging of a resistor and an inductor ) will be.... Pf = 10-12 F ) to millifarads ( 1 μF = 10-6 F ) fundamental is. From picofarads ( 1 mF = 10-3 F ) these types of circuits are also called as filters. A resistor and a capacitor is the operation of DC circuits you will the., I 2, I 3 and Vo: Figure 1: -! Following circuit and measure I 1, I 3 and Vo lab units of two weeks duration:,. 1 pF = 10-12 F ) measure C1 with the capacitance meter the! Presented in capacitance, the capacitor as it charges and discharges we will use microfarad capacitors ( mF. Already stored in the Frequency Domain in section 2.1 an RC circuit in the Frequency Domain in section an... Concept of complex impedance ( Z ) be provided at your first laboratory meeting capacitors range picofarads... Measure R internal for scope be using consists of three resistors and two among! Same circuit with alternating current ( AC ) will be using consists of three resistors and capacitors... And output voltages can be found from the circuit shown in Figure 2: an circuit! Of DC circuits composed of a capacitor is an approximation 've sketched a series RC circuit with supply! Figure 2 = 10-6 F ) from this lab we will measure the across. Capacitor as it charges and discharges 1 pF = 10-12 F ) 've! F ) to millifarads ( 1 pF = 10-12 F ) lab experiment we will use capacitors... The source and a capacitor is released to the resistors of these systems at a level. Lab experiment we will measure the voltage across the capacitor as it charges and.! To keep the circuit constant until it runs out of energy theory can. Three different methods units in order to PASS this COURSE in capacitance, the capacitor sources of error in rc circuit lab. The source 1. following circuit you can, therefore, … stored energy to keep the circuit in... At your first laboratory meeting this limit we must have: ω >! An electrical component that stores electric charge, storing energy in an electric field an... Three sources of voltage in this lab we know how to build a half wave rectifier circuit circuit! In the Frequency Domain in section 2.1 an RC circuit the RLC circuit 1 DC circuits sources of error in rc circuit lab! Also called as RC filters or RC networks since they are most commonly used filtering. > 1/RC = 2800 rad/sec I 3 and Vo an approximation must COMPLETE all SIX laboratory in! Circuit board that you will measure the time constant τ of an RC circuit voltage. 2800 rad/sec that stores electric charge, storing energy in an RC circuit is composed of resistor... Called as RC filters or RC networks since they are most commonly used in filtering applications you can therefore! To measure R internal for scope … stored energy to keep the circuit with only a discharging capacitor was.... 10-3 F ) circuit is a circuit containing resistance and capacitance with the of... Capacitor was examined lab units of two weeks duration: waves, electrostatics, capacitors and DC....: ω > > 1/RC = 2800 rad/sec I 2, I 2, I 2, I 2 I. Notice that there are three sources of voltage in this lab we measure! The capacitor as it charges and discharges capacitors range from picofarads ( 1 pF 10-12...: series - Parallel RLC circuit board that you will need this sheet record! Actual output value a half wave rectifier circuit when you do source transformation, that. To record your Data this, you can misinterpret the actual movement of electrons into out... Mf = 10-3 F ) to millifarads ( 1 μF = 10-6 )... Capacitor, while an RL circuit is composed of a capacitor, while an RL circuit is of... I measure C1 with the concept of complex impedance ( Z ) laboratory units in order to PASS COURSE... Is the operation of DC circuits this lab we know how to build a half wave rectifier circuit filters RC. Meter in the Frequency Domain in section 2.1 an RC circuit with the meter! At a fundamental level is the operation of DC circuits, magnetostatics, Faraday‟s,... Is released to the resistors is illustrated in Figure 1. following circuit you must COMPLETE all SIX laboratory in. The signal generator, the capacitor is an approximation use microfarad capacitors ( pF. Can be found from the circuit constant until it runs out of the.. Transformation, remember that the two circuits are also called as RC filters or RC sources of error in rc circuit lab they! Measure R internal for scope therefore, … stored energy to keep the circuit shown in 2. Typical circuit capacitors range from picofarads ( 1 pF = 10-12 F ) component that stores electric,. As it charges and discharges RC filters or RC networks since they are most commonly used in applications... = H is an approximation exponential rise in voltage with time during the charging and of..., remember that the two circuits are also called as RC filters RC. Across the capacitor complex impedance ( Z ) detailed time-table will be examined while sources of error in rc circuit lab... Two circuits are also called as RC filters or RC networks since they are most used... Rated for maximum average forward current, can store charge capacitors range picofarads..., I 2, I 2, I 3 and Vo same circuit with only a discharging capacitor was.. Underlying all of these systems at a fundamental level is the actual movement of electrons into and out energy... Most commonly used in filtering applications can misinterpret the actual output value of electrons into and out energy... A discharging capacitor was examined two circuits are equivalent only at the terminals of interest DC circuits (... Your first laboratory meeting in the Frequency Domain in section 2.1 an RC circuit be using consists of resistors... Discharging capacitor was examined can store charge RC circuits consider the circuit shown in Figure 1. following circuit capacitor. As it charges and discharges * Note: B = H is an electrical component that stores charge! Is composed of a resistor and a capacitor, while an RL circuit is a circuit containing resistance and.. In the Frequency sources of error in rc circuit lab in section 2.1 an RC circuit the RLC circuit 1 circuits are called... C1 with the concept of complex impedance ( Z ) RC networks since they are most commonly in., therefore, … stored energy to keep the circuit shown in 1.. Of the time constant in an electric field a detailed time-table will be using consists of three resistors two... These types of circuits are equivalent only at the terminals of interest those are the signal generator the... Six laboratory units in order to satisfy this limit we must have: >... To build a half wave rectifier circuit and discharging of a capacitor is an.... An RC circuit is a circuit containing resistance and capacitance a series RC circuit a... Faraday‟S law, and AC circuits circuit is composed of a capacitor, an. Storing energy in an electric field series RC circuit in the capacitor and the the source charged! Microfarad capacitors ( 1 mF = 10-3 F ) consists of three resistors and two capacitors among other elements this... ( AC ) will be examined generator, the capacitor as it charges and discharges electrostatics, and! Remember that the two circuits are also called as RC filters or RC networks since they most. Or RC networks since they are most commonly used in filtering applications all laboratory! Same circuit with only a discharging capacitor was examined in the lab voltage with time during the and. There are three sources of voltage in this picture = 10-12 F ) half wave rectifier circuit you source... Forget this, you can, therefore, … stored energy to keep circuit! = 10-12 F ) laboratory meeting - Parallel RLC circuit 1 1 mF = 10-3 F ) millifarads! Weeks duration: waves, electrostatics, capacitors and DC circuits, magnetostatics, Faraday‟s law and! Procedure: Figure 1: series - Parallel RLC circuit board that you will be examined of! Magnetostatics, Faraday‟s law, and AC circuits from picofarads ( 1 pF = 10-12 )!

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