Hello, i was wondering how to change the values of a dependent source in pspice 9. If the probe program is executed, an output can be obtained as shown in the figure. Dependent sources type of source acronym symbol in text part name in pspice symbol in. Multisim component reference guide national instruments. Example use of the voltage dependent voltage source. E voltage dependent voltage source ltwikiwiki for ltspice. For an example of using a pspicecompatible lookup tablebased voltagecontrolled voltage source in a. Sure enough, there are three basic dependent sources. Hsrc currentcontrolled voltage source model online.
Pspice dependent sources electronic circuits electrical. Pspice quick guide and tutorial university of mississippi. In order for pspice to simulate your circuit, it must have a zero node for a. When using dependent sources you must not only take care to get the. Dependent sources dependent source abbreviation pspice name library voltage controlled voltage source vcvs e analog current controlled current source cccs f analog voltage controlled current source vccs g analog. The image below shows an example waveform produced by an fm voltage source connected to a 1ohm load with the parameters set to their default values. Source controlled multiple controlling sources voltage source. Circuit elements and models university of california, berkeley. If you are learning more about independent and dependent voltage.
This can be modelled using a voltagecontrolled current source with voltage controlled by tablebased voltagecontrolled current source. Aug 30, 2009 sure enough, there are three basic dependent sources. An alternative way is to use a schematic entry program such as orcad capture. Draw an electronic circuit on the computer using capture. Cadence pspice technology offers more than 33,000 models covering various types of. Ltspice tips current dependent current source motley. In the first example here, the convention makes the dependent sources current flow opposite the direction its arrow is pointing. The first letter of the part name for the voltage controlled dependent voltage source is e. Download pspice for free and get all the cadence pspice models. Determine the node voltages and the controlled current of the dependent source.
The expressions given for vand imay be any function of voltages and currents through voltage sources in the system. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. How to implement dependent sources in orcad pspice duration. The b source is a type of nonlinear controlled source that was added to open the door to pretty much any function you might want, covering pretty much all possible cases. Historically this was a separate application but it is now integrated with pspice. Download a free trial to find out which altium software best suits your needs. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. In this example the dependent voltage source is called esource and the positive terminal of the source is net 3. Join date jun 2002 location greece posts 396 helped 33 33 points 4,958 level 16. The software and documentation are furnished under a license agreement and may be used or copied only in accordance with the terms of the license agreement. I am trying to make a circuit that uses a voltage controlled voltage sourcei believe, but the image that pspice wants me to use is not what i have written down on the drawn one. The convention here is that positive current flows in to the positive terminal.
Open the symbol and put a gain value in for value 1 2. Some examples of the voltage controlled dependent voltage source pspice entries follow. The most appropriate and simplest iv converter is the resistor with a suitable value. So if there was 1 mv between net 7 and net 9 then the voltage on net 3 would be 100 mv higher than net 5. This is the letter that must appear in column 1 of the. This can be modelled using a voltage controlled current source with voltage controlled by tablebased voltage controlled current source. For detailed information, see voltage and current controlled elements in the hspice simulation and analysis user guide. Figure 1 above shows an example of a circuit with a. Independent sources must be turned on because the dependent source relies on the excitation due to an independent source. All schematics you draw on pspice will need the following.
I am trying to make a circuit that uses a voltage controlled voltage source i believe, but the image that pspice wants me to use is not what i have written down on the drawn one. The positive side of the controlling source is net 7 and the negative terminal of the reference voltage is net 9. Dependent sources type of source acronym symbol in text part name in pspice symbol in pspice voltage controlled voltage source vcvs e current controlled current source cccs f voltage controlled current source vccs g current controlled voltage source ccvs h where a is a cofficient and i and v are the current and voltage at some other point in. This source is known as a currentdependent voltage source or a v of i source.
Explain some issues that arise when connecting these parts in the schematics layout tool in pspice. The corresponding ltspice iv schematic is shown in figure 11. Pspice schematic probes are placed in the circuit to measure the voltage across the resistor and the current through the inductor. Behavioral voltage source see voltage and current controlled elements in the hspice simulation and analysis user guide. The voltage produced by the dependent source is twice the voltage across resistor r1 as measure from the left side of the resistor to the right side of the resistor. How to simulate a circuit with dependent sources youtube. Independent and dependent voltage source problems in. It isnt difficult to make an incorrect assumption based on this. If you are depending on current, its the current flowing through the input terminals. Open the symbol and type vvnode into value, it will output the voltage at node. If you doubleclick the e1 dependent voltage source in pspice, you may. Is there a converter in pspice for current to voltage. And pspice is a product of the orcad corporation and the student version we are using is. Independent and dependent voltage and current sources.
In pspice, this can be done using the etable component in the 2015 oxford university press reprinting or distribution, electronically or otherwise, without the express written consent of oxford university press is prohibited. Note that making connections to the sensing pair of terminals has no effect on the rest of the circuit. To obtain current and voltage in a dc circuit, the analysis is performed with. The thevenin approach reduces a complex circuit to one with a single voltage source and a single resistor. Likewise, you can make it current dependent by entering vipart. Creating dependent sources in pspice all about circuits. There are three types of voltage dependent currentsource circuit elements. For an example of using a pspice compatible expressionbased voltage controlled voltage source in a simulation, refer to the example project evalue. Vsffm frequency modulated sinusoidal voltage source model. Ltspice dependent voltage sources circuit electrical. To set the squarewave source, rightclick the body of the voltage source, leave both textboxes blank and choose the advanced button.
Orcad pspice the handling procedure of circuit designing. A current source dependent on the current of a voltage source. This video shows how to implement dependent sources in pspice software. Then the output is dependent on this based on the transfer parameter of the specific dependent source. Consider the frequency modulated sinusoidal voltage source in the above image, with the following characteristics. Ltspice tutorial ep7 dependent voltage and current sources. Describe how to set the part properties to set the coefficient a for the dependent source. A fully functional version can be purchased from cadence design systems, inc. To make it a 1hz squarewave, the period t 1frequency 1 second. Pspice simulates the circuit, and calculates its electrical characteristics. Multisim component reference guide january 2007 374485a01 componentref.
Voltage and current controlled elements hspice supports the following voltage and current controlled elements. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. If you double click the e1 dependent voltage source in pspice, you may find the gain. For example r9 5 2 15k means that resistor r9 lies between node 5 and node 2, and has a value of 15000 ohms. Using pspice for circuits with dependent sources csun. Pspice model library includes parameterized models such as bjts, jfets, mosfets, igbts, scrs, discretes, operational amplifiers, optocouplers, regulators, and pwm controllers from various ic vendors. If we need a graphical output, pspice can transfer its data to the probe program for graphing purposes.
An improved model of medium voltage 1200 v silicon carbide sic mosfet based on pspice is proposed in this paper, which is suitable for wide temperature range applications especially at low. For instance, suppose we wanted to make the voltage source above model. A voltage source is designed to hold the voltage secure, no rely what the burden is, as long because of the fact the burden does no longer draw extra modern than the ability furnish can generate. Analyse its behaviour with probe, which can produce a range of plots. The values you type in for v1 and v2 will depend on the amplitude specified on the. Using pspice to find the thevenin equivalent circuit. Pspice voltagedependent, voltage source eeweb community. The orcad capture program was originally called schematic in the microsim. For an example of using a pspicecompatible expressionbased voltagecontrolled voltage source in a simulation, refer to the example project evalue. For an example of using a pspice compatible lookup tablebased voltage controlled voltage source in a simulation, refer to the example project table. Dec 28, 2014 this video shows how to implement dependent sources in pspice software. The smallsignal ac behavior of the nonlinear source is a linear dependent source or sources with a proportionality constant equal to the derivative or derivatives of the source at the dc operating point.
When the output voltage v3 settles to about 10v at about 4ms, there is some oscillation in the supply current and the output current, due to the lc ringing. Modeling voltagecontrolled resistors and capacitors in pspice. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. So, the present can selection, on an identical time as the voltage is held consistent. For example, say i have a dependent current source that depends on the current flowing through some resistor and say that the current flowing through this dependent source is 2i. I am extremely new to circuits and circuit simulation software. Execute pspice using the circuit file created as the input. The road of life twists and turns and no two directions are ever the same. Vsffm frequency modulated sinusoidal voltage source. Adding a current dependent voltage source to ltspice.
The next couple of sections will instruct you on how to draw a full circuit. Pspice software for simulating voltage and currents of a text file netlist of a electronics components such as resistors, capacitors, inductors, transisters, diodes, voltage and current sources, etc. This means you can vary the value during the run and see how your circuit reacts for instance if it is going into a comparator circuit that you want to. In pspice you may use a voltage source with value of zero in series with any other element to act as an ammeter. Since we want to plot the voltage and current versus time, the transient analysis is used. Return to ltspice annotated and expanded help commentary, explanations and examples this section is currently blank. Most elementary math functions are allowed and you can use node voltages and terminal currents in.
Hello, i am extremely new to circuits and circuit simulation software. Dec 09, 2010 a dependent source is a 4terminal component. The gain can be either a positive or negative gain. Inserting dependent sources in pspice you can find these sources in analog or abm libraries. Frequency modulated sinusoidal voltage source model. Modeling voltagecontrolled resistors and capacitors.
Create a new new simulation profile from the pspice menu. This means you can vary the value during the run and see how your circuit reacts for instance if it is going into a comparator circuit that you want to test triggers and releases at the correct values. Contributors of ltwiki will replace this text with their entries. Put it in series with the resistor its effective input impedance is zero so it doesnt perturb the circuit. At this point, the current source macro shuts itself off as there is essentially zero voltage across it. Modelling of sic power mosfet in matlab, simulink, and ltspice.
An annoying problem in pspice is the inability to change some properties of the part. Note in the middle plot that the current through the source drops from 20ma to approximately 0a when this occurs, and in the bottom plot, the voltage across the current source macro, vin1,out1, limits at approximately 0v. Utilize the thevenin technique to analyze circuits with dependent sources. How do you use a linear current dependent voltage source. How to implement dependent sources in orcad pspice. Current dependent voltage source in ltspice youtube. Esrc voltagecontrolled voltage source model online. The four types of dependent sources are listed below in table 1 along with their abbreviation, pspice name and library. Objective of lecture introduce the parts in pspice for dependent voltage and current sources. Also pspice is a simulation program that models the behavior of a circuit. Here you have the examples of a ideal voltage source and ideal current source.