The labview programming environment simplifies hardware integration for engineering applications so that you have a consistent way to acquire data from ni and thirdparty hardware. Students will learn about the equations that govern capacitor charging and discharging, the rc circuit time constant, and be introduced to using rc circuits as low. Autosuggest helps you quickly narrow down your search results by suggesting possible matches as you type. Continuous transfer function model of 1st order rc circuit vi. Getting started with open broadcaster software obs. This blog post will show you how to use your openscope mz to read the output of a first order rc circuit. While the circuit above is that of an rc low pass filter circuit, it can also be thought of as a frequency dependant variable potential divider circuit similar to the one we looked at in the resistors tutorial. Conclusion the idea of basic electrical engineering lab experiments simulation using labview software is being successfully put into operation at rggi, meerut, india in the department. Measuring the time constant of an rc circuit using a digital.
Rc transient circuit on ni elvis ii protoboard close ni elvis ii spfs and instrument launcher and start labview. The below image shows a circuit designed in multisim. The circuit components, however, cannot influence the circuits steadystate performance as indicated by the fact that the dc gain always equals 1. Rc filter characteristics figure 1 below shows an rc filter connected to a sinusoidal voltage source. Perform analysis by using labview for the realworld circuits that you.
All circuit designing simulation software s are a schematics that capture and simulation program that enables you to test the output of various circuits by assembling the components and drawing schematics. Rc lowpass filter circuitlab online circuit simulator. Online schematic capture lets hobbyists easily share and discuss their designs, while online circuit simulation allows for quick design iteration and accelerated learning about electronics. Like capacitors themselves, rc circuits have many applications in realworld circuitry. Students will make calculations for a given rc circuit and then build, modify, and measure that circuit with the ni elvis iii. You can also browse material by application area, course, and product. Can labview simulate the electrical circuits like pspice. Doubleclick on one of the user interface widgets on the front panel view to open the block diagram view.
Oct 02, 2019 the main objective of this study is to experimentally measure the frequency response of a simple rc circuit using labview and observe how changing r and c will affect the result. The software integrator was tested with a raw signal input and one employing simple hardware filtering using an rc circuit. A bode plot defines the frequency characteristics of a given circuit. On your data sheet, give the truth table for the circuit. For the past five years, national instruments labview virtual instrument software has been used as a principal tool in laboratory exercises for electronic device modeling, device testing, circuit design, circuit simulation, and circuit testing 1. The circuit components, however, cannot influence the circuit s steadystate performance as indicated by the fact that the dc gain always equals 1. Multisim provides intuitive circuit design and spice simulation to help students explore circuit theory and investigate behavior. On your data sheet, draw a circuit that would produce the output shown in table 1 from the inputs shown. Simulation of rlc series and parallel resonance in basic. Thus, you are measuring the voltage of the resistor in an rc circuit. These tools allow students, hobbyists, and professional engineers to design and analyze analog and digital systems before ever building a prototype.
Graphical circuit stimulation software, such as labview, is popular among engineers working in the industry and researchers in universities and research labs because it reduces the testing and manufacturing costs. Temperature measurement circuits for embedded applications. This lab will involve the study of rc circuits at a basic level. Lti viewer and mux block pdf modeling and impulse in simulink detailed instructions on three methods for modeling an impulse in simulink. You can also check a circuit for errors before simulating it. Measure rc circuit with an openscope mz and labview hackster.
Carry out dc analysis, ac analysis, transient analysis, fourier analysis, noise analysis, etc. The platform includes multisim, ni elvis ii, ni mydaq, labview, and labview signalexpress. Gain and phase measurements of rc, rl, and rlc networks 1 objectives in this lab exercise you will analyze and measure the phase and amplitude relationships of input voltages and responses in circuits comprised of resistors, capacitors, and inductors. An introduction to labview exercise for an electronics class. It features a 3d prototyping environment that can help students move from a software environment to a lab environment. Use labview to explore characteristics of ac circuits studied in previous electronics courses. Similarly, if we introduce an inductor in a simple resistive circuit, the output current will be leading the output voltage by 90 degrees.
Graphical circuit stimulation software, such as labview national instruments, inc. Equations that explain charging and discharging of capacitor are analysed. The output from the vi will consist of two plots displayed on one xy graph. Feb 12, 2015 to study half and full adder circuit using labview duration. Circuits by ulaby and maharbiz university of michigan. Also, ensure that your ni elvis ii device is connected to your computer and detected before launching multisim if you want to compare simulated data to real data in the same sitting. This leading and lagging of current and voltage in case of rc and rl circuits will be explained in this tutorial. Measure rc circuit with an openscope mz and labview. Connect the rc circuit inputs to function generator fgen and ground pin sockets. Testing an rc circuit with the function generator and oscilloscope complete the following steps to build and test the rc circuit.
This week, youll be introduced to some basic structures of labview by first simulating a function generator, then simulating some digital logic circuits. Frequently asked questions on working with minicircuits software api in labview. Figure 1 below shows an rc filter connected to a sinusoidal voltage source. Pdf simulation of rlc series and parallel resonance in. Students will also gain experience with two instruments. Dec 07, 2010 hi, can anyone help me to design a vi that can be used to show how the voltage rises across a capacitor in a simple rc circuit when excited by a step function. The trick is to insert a small resistor of known value into our circuit, then. Labview is systems engineering software for applications that require test, measurement, and control with rapid access to hardware and data insights. The hardware is designed to be as inexpensive as possible, transparent, and easily assembled. Measure rc circuit with an openscope mz and labview this exercise will show you how to use your openscope mz to read the output of a first order rc circuit. The impulse response of a system is the circuits output when the input is a unit impulse or. Minicircuits is a global leader in the design and manufacturing of rf, if, and microwave components from dc to 86ghz. Tinati is a free circuit simulation software that can be used to design and simulate circuits. But well use a standard trick to make indirect current measurements.
Measuring the dynamic behavior of a first order system rc circuit using national instruments daq card and labview. Students will learn about the equations that govern capacitor charging and discharging, the rc circuit time constant, and be introduced to using rc circuits as lowpass and highpass filters. In fact, the mydaq cannot directly measure current. Magnitude response is plotted as circuit gain in decibels as a function of log frequency.
Teach analog circuits with ni multisim and ni elvis. Hi, can anyone help me to design a vi that can be used to show how the voltage rises across a capacitor in a simple rc circuit when excited by a step function. Pdf labview modeling and simulation, of the lowpass and high. Click here for benchtop systems including switches, programmable attenuators, power sensors and signal generators click here for rackmounted systems including switch matrices, mesh networks and multichannel attenuators general documentation. This project implements rlc series circuit and determines its resonance condition using labview software. Pdf an introduction to labview exercise for an electronics. Rc circuit finding the time constant with a labview program. Using the supplied gui software or most common lab test software you can easily set complex, timed switching sequences using multiple switches with only a single power supply and usb control line, or ethernet. Development of a multichannel integration routine in labview. Its graphical representation, similar to a process flow diagram, was. Using national instruments labview software in an introductory.
The system is based on the labview software and can act as a security guard of the home. Rc circuits 3 figure 5 also records the voltage over the resistor. The student will use the dc current from the mydaq with an rc circuit on a breadboard and the elvismx software to discover the time constant of the circuit. Oct 26, 2007 hi all, i am trying to simulate an rc circuit and display both vr and vc on the same chart. Practical circuits and interface techniques will be provided for embedded applications with thermocouples, resistive temperature detectors rtds, thermistors and silicon integrated circuit temperature sensors. Phase response is plotted as the phase difference between input and output signals on a linear scale as a function of log. Using labview to measure current up to now, youve used labview to measure voltage, but not current. Measure rc circuit with an openscope mz and labview digilent. An opamp with a capacitor in the feedback loop will also be.
Rc filter with series capacitor and output resistor r. In this experiment we will record the output voltage of the rc circuit for a step in input voltage. In this lab, students will learn about resistorcapacitor rc circuits. Oct 10, 2015 rc circuit finding the time constant with a labview program. One plot will be the input wave vin eut v displayed fro. F capacitor on a breadboard, connect the solid orange osc1 wire. National instruments labview is a graphical programming language that has its roots in automation control and data acquisition.
No, there is no r and c element in the mathematics palette. Included is labview and multisim software, ni mydaq hardware, learning resources, digital. By plotting the networks output voltage against different values of input frequency, the frequency response curve or bode plot. Studying ac circuits with labview objectives write labview programs to generate ac waveforms of userspecified shape, amplitude, and frequency. This program uses labview apis to turn the power supply on for. These are circuits in which a resistor is placed in series with a capacitor and used to control the rate at which the capacitor charges or discharges. Nov 22, 2017 measure rc circuit with an openscope mz and labview this exercise will show you how to use your openscope mz to read the output of a first order rc circuit. As a group, try to figure out how the program works, keeping in mind that all blocks execute simultaneously unless placed within a program flow control block such as a forloop or film strip, both of. Whereas, labview is a virtual workbench for graphical programming by capturing and interfacing of virtual circuits created on any. Be careful when measuring the voltage of the different elements in your. Note that this example does not include a measurement of the source ve s. Skip ahead to step 3 if you want to build the circuit first. Figures 17 and show the18 d iagram and the actual rc circuit that emulate the three tanks level system.
Write labview programs to display and measure ac waveforms produced by external sources. National instruments ni mydaq was designed to give students the ability to work on engineering course work and experiment with projects handson anywhere, anytime. If you want to simulate specific, simple circuits like the ones you list, for which you can easily define the set of equations that determine their behaviour, you should be able to do it in labview, using the mathematics functions for example. Iv, vi, and vt curves can be measured and saved to simple ascii. Chapter 03 rc circuit time response lab exercise 03. This is in line with our expectations based on the software settings i set in. Rlc series circuits are used in tuning circuits such as oscillator circuits, filter circuits, radio and television tuning circuits. Software support app note an49001, a, software support available for minicircuits portable.
Thats because labview is a programming language, not a circuit simulator. The openscope mz is an extremely versatile device, and at its current price point of only 89 dollars you get a lot of bang for your b. National instruments labview virtual instrument software is a tool that can be. We can see from the results above, that as the frequency applied to the rc network increases from 100hz to 10khz, the voltage dropped across the capacitor and therefore the output voltage v out from the circuit decreases from 9. Basic application of labview a voltage divider circuit. Labview labview is systems engineering software for applications that require test, measurement, and control with rapid access to hardware and data insights. If you are looking for generalpurpose software that can capture and simulate electronic circuits, labview is not suitable. This lab covers the basic characteristics of rc circuits, including both dc and ac analysis, simulation, and experimentation. Carduino arduinopowered, labviewcontrolled vehicle. These are circuits in which a resistor is placed in series with a capacitor and used to control.
Use of these blocks in simulink, with examples using a firstorder rc circuit model. However, since we have swapped the resistor and the capacitor, the grounds are at the same point in the circuit. This pack is sure to help boost engineering education in both the lab and the classroom. Modeling and impulse pdf state space and transfer function blocks in simulink. Educational discounts on national instruments, academic ni. The software allows control over sourcing and measuring current and voltage, timedependent behavior of rc circuits, and a simple oscilloscope. Simulation of this parallel circuit in labview shown in figure 5 resonance curve and all result are shown in figure 6. You can even synchronize other software with the switching sequence. The circuits third edition textbook conveys a set of principles and problem solving techniques for a first course in electrical engineering circuit analysis, and also provides a valuable framework for subsequent studies. Update the r or c values double click on the component in build mode and then run the frequencydomain plotter in simulate mode to see the output graph. Pc running labview software set the function generator to the following initial settings. In that tutorial we used the following equation to calculate the output voltage for two single resistors connected in series.
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