Calculate icap the rms current though the filter capacitor as a ratio of the average load current iload. A circuit with a vcvs chapter 2 simple dc circuits in your pspice supplement. Independent source elements using sources and stimuli 54 starhspice manual, release 1998. The other two terminals should be connected to the terminals providing the controlling value. How to use current contro current source on pspice studen l. As a result, any changes to the if, vcc or rl will lead to a change in ctr, tr and capacitance cint. The easiest way to make a new pspice model library is to download it from the. Consider the currentcontrolled current source in the above image, with the. Then we show how to use a current controlled current source.
This tutorial introduces the dependent source elements in pspice. He studied electronics and physics and enjoys everything that has moving electrons and fun. Fsrc currentcontrolled current source model online. One can design a schematic diagram and develop a pcb of severa. In the theory of electrical networks, a dependent source is a voltage source or a current source. Cadence does not warrant that use of such information will not infringe. Two terminals placed inside a circle in the part should be wired as the source in pspice.
When anybody wants to convert a hspice capacitance model to pspice capacitance model. To obtain current and voltage in a dc circuit, the analysis is performed with. Pspice designer, pspice designer plus, modelling application, pspice part search symbol viewer, pspice report, associate pspice model, new delay functions for behavioural simulation models, new models, support for negative values in hysteresis voltage and threshold voltage. Subcircuits coding a subcircuit invoking a subcircuit scope of names and nodes. A quick guide for pspice university of mississippi. Circuit elements and models university of california, berkeley. Current flow is from the positive node, through the source, to the negative node. Pspice stands for personal computer simulation program with integrated circuit emphasis. Unless you plan to use a library in eagle that already has spice compatible.
This source produces a current at the output terminals that is a linear function of the current at the input terminals, dependant on the gain of the source. Dennis fitzpatrick, in analog design and simulation using orcad capture and pspice second edition, 2018. An3005 modeling phototransistor optocouplers using pspice. Source controlled multiple controlling sources current source. Using pspice to find the thevenin equivalent circuit. Pspice provides an f element which is in itself a current controlled current source. The current controlled current source actually implements two individual devices, as can be seen from the netlist template. So, i guess i have to attach a resistor someplace in that path.
Pspice tutorial create a new project and select analog or mixed ad. Orcad pspice ad how to use this online manual how to print this online manual welcome to orcad overview commands analog devices digital devices customizing device equations. 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. Ece 240 electrical engineering fundamentals pspice tutorial 3 using pspice for circuits with dependent sources the problems in this tutorial and the corresponding homework continue to deal with the dc analysis of circuits, or dc bias analysis in pspice. Analog design and simulation using orcad capture and pspice, second edition provides stepbystep instructions on how to use the cadenceorcad family of electronic design automation software for analog design and simulation.
V1 1 0 dc5v v1 1 0 5v i1 1 0 dc5ma i1 1 0 5ma the first two examples specify a dc voltage source of 5 v connected between node 1 and ground. Mike is the founder and editor of, an electronics engineering communitynews and project sharing platform. E voltage controlled voltage source f current controlled current source g voltage controlled current source h current controlled voltage source variable phase vsin source the phase isnt displayed on the schematic for the vsin source, but it can be added. Series and parallel circuits superposition theorem spice topology electronics. Pspice voltage and current sources watch more videos at videotutorialsindex. However, it then looks like pspice treats the path through the cccs as a shortcircuit. Double click on the voltage source symbol and notice that in this vpulse source, the initial voltage level v1 is 0v. Pspice ad reference guide montana state university. Use pspice and ac analysis for a single point 60 hz to obtain the. Examples of simulating digital circuits using pspice lets design a simple digital circuit i. Analog design and simulation using orcad capture and pspice. Pspice ad reference guide includes pspice ad, pspice ad basics, and pspice product version 10.
Pspice schematic probes are placed in the circuit to measure the voltage across the resistor and the current through the inductor. Gsrc voltagecontrolled current source model online. Download pspice for free and get all the cadence pspice models. So far we have covered circuits with resistors and independent sources. Conference paper pdf available february 2014 with 171 reads. Pspice is a circuit analysis program, developed by microsim corporation, based on the well known spice program simulation program for integrated circuit evaluation developed at the university of californiaberkeley. Since we want to plot the voltage and current versus time, the transient analysis is used.
Glaplace p n laplace vp,n sc this implements a voltage controlled current source with a transfer function of is vs s c. In this tutorial this law is applied and verified using pspice as you will see shortly. The current source b1 depends on i1 which is the current in the source branch v1r1. Finally i am able to model it using laplace equation. The program ltspice allows to use a switch controlled by current of independent source. Linear current controlled current sources general form. In the component selection window press f2 button in the main screen to get there this switch is located in the root directory. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. In this note, the optocoupler will be modeled by a current controlled current source.
Pspice orcad tutorial modeling npn transistor with. I can model a capacitance which has the dependency on the voltage across it. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Plot the current and voltage associated with one of the diodes, for example, d1, and obtain the average and the rms values of the current as a ratio of the average load current. Contributors of ltwiki will replace this text with their entries. Use pspice and ac analysis for a single point 60 hz to obtain the node voltages v1 and v2, and current in r3. Pspice provides an f element which is in itself a currentcontrolled current source. Pspice utilizes the implied 1 and 2 ends for it s handling of current directions and voltage polarities, for example, it represents current as entering a device from its 1 end and leaving its 2 end, and it represents a positive voltage at its 1 end with respect to its 2 end. Introduction to photovoltaic systems and pspice request pdf. In order for pspice to simulate your circuit, it must have a zero node for a ground. Explore 8 apps like pspice, all suggested and ranked by the alternativeto.
Learn about the new spice simulation in autodesk eagle 8. In this pspice tutorial video, we show how to use dc bias points to simulate the 2n3904 bipolar junction transistor with pspice orcad. Pspice simulates the circuit, and calculates its electrical characteristics. The currentcontrolled current source actually implements two individual devices, as can be seen from the netlist template. Notes for orcad pspice university of california, san diego. Browse cadence pspice model library cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Figure 1 above shows an example of a circuit with a. The shortcut to select pspice model application, independent sources is shiftr. To the right are some graphs from the ps2501 data sheet for reference. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. The pspice user community is your destination to find pspice resources, ask and answer questions, and interact with your industry peers and pspice experts.
How to download and install l pspice student version 9. An3005 modeling phototransistor optocouplers using pspice simulation. The direction of positive controlling current flow is from the positive node, through the source to the negative node of the 0v voltage source. Accurate modelling of practical devices requires using several idealized elements in.
G voltage controlled current source h current controlled voltage source each dependent source above has four terminals. Determine the node voltages for the circuit containing a voltagecontrolled voltage source as shown. This switch symbol uses the pspice model of a voltagecontrolled switch designated by vswitch which has a very low resistance. Dependent sources voltage controlled voltage source. Voltage controlled current source current controlled voltage source after placing the part, the gain needs to be set. How to use current contro current source on pspice studen l pspice student version 9. Circuit elements and models university of california.
How to use current contro current source on pspice studen. In the component selection window press f2 button in the main screen to get there this switch is located in the root directory place this component in the circuit, click on then by. Pspice models can be created and edited in the pspice model editor, which can be started in standalone mode from the start menu, pspice simulation accessories model editor, or by highlighting a pspice part in the schematic in capture, rmb edit pspice model. It is a tool to design and develop analog circuits and to simulate the behavior of a circuit.
Pspice schematic with current controlled voltage source. If we need a graphical output, pspice can transfer its data to the probe program for graphing purposes. I can access the voltage across this charge source. Jan 24, 2014 overview of entering circuits with controlled sources in orcad. Using pspice for circuits with dependent sources csun. Instruction set for simulating power electronics using. The equivalent circuit starts with the photogenerated current, which could be. Pdf designing simple voltagecurrent processors in orcad. Using pspice for circuits with dependent sources nanopdf.
Refer to the end of lecture 5 notes for a circuit diagram. Consider the voltagecontrolled current source in the above image, with the. In this note, the optocoupler will be modeled by a currentcontrolled current source. In pspice, this can be done using the etable component in the. The pspice version available at the university of mississippi can be used on a personal computer for sophisticated analysis of electric circuits of. To get it to measure the controlling current, i have to connect the two measuring terminals with a resistor in between them. The first is a 0v voltage source, which acts as an ammeter, to measure the current input and then the actual current controlled current source that references it. The four dependent sources we now encounter are simple multiples of the controlling voltage or current. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. Sometimes one would like to figure out voltage, current, or power for a given circuit.
Im trying to simulate a voltage dependent current source in ltspice and i need to have a limited output current. Linear currentcontrolled current sources general form. Hello, im trying to create a current dependent current source and im really stuck. Pspice tutorial 3 using pspice for circuits with dependent sources the problems in this tutorial and the corresponding homework continue to deal with the dc analysis of circuits, or dc bias analysis in pspice. Sep 05, 2007 this tutorial is maintained by william e. Does any one have an idea on how i would go about designing the current controlled source in pspice. Gain of the voltage controlled current sources is 1. I want to model a capacitor using the equation q cv. An optocoupler model typically, an optocoupler is an opticallycoupled isolator that uses a gaas led as a light source and a bipolar npn phototransistor as a receiver. Ltspice current dependent current source all about circuits. Overview of entering circuits with controlled sources in orcad. A brief tutorial on using pspice this is a brief summary of the spice simulation program with integratedcircuit emphasis, or its personal computer version pspice, electric circuit. And pspice is a product of the orcad corporation and the student version we are using is. F current dependent current source ltwikiwiki for ltspice.
B2 model the input bias current at each input terminal of the op amp. We now extend our circuit parts list by adding the most basic dependent sources. Parameters definable at component level the following componentlevel parameters are definable for this model type and are listed on the parameters tab of the sim model dialog. Close the library selection window and we will begin the construction of the following circuit. Please see our privacy policy to learn more about how we use cookies and how. Google search suggested either i iv1 or i ir1, but neither of those gave the. Pspice gives a quick way of calculating these values. This tutorial introduces the dependent source elements in. Download pspice schematics files for ee201 examples. It rises to v2 of 1v with a delay time td of 0s, a rise time tr of nearly 1fs, and a fall time tf and a pulse width pw, both nearly zero. The cccs element will have a source port and a sense port. The voltage is directly proportional to the current in a circuit provided that the resistance and the temperature remains constant. Voltage controlled dependent voltage source voltage controlled dependent current source current controlled dependent current source current controlled dependent voltage source using pspice to find the thevenin equivalent circuit 3rd tutorial.
The symbolic name of this switch is csw, and its file name is csw. Transforming the voltage source to the current source and writing the nodevoltage equation results in. Using pspice for circuits with dependent sources the problems in this tutorial and the corresponding homework continue to deal with the dc analysis of circuits, or dc bias analysis in pspice. All independent voltage and current sources that have ac values are. An outline of pspice pspice simulates the behavior of electronic circuits on a digital computer and tries to emulate both the signal generators and measurement equipment such as multimeters, oscilloscopes, curve tracers, and frequency spectrum analyzers. 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. Instruction set for simulating power electronics using pspicetm. Also pspice is a simulation program that models the behavior of a circuit.
Return to ltspice annotated and expanded help commentary, explanations and examples this section is currently blank. Vnam is the name of a voltage source through which the controlling current flows. Some versions of pspice allow you to ask for a current through a resistor without using a voltage source ex. A voltage controlled current source can then be used to. Chapter 5 using sources and stimuli class home pages. The method in which pspice calculates these is using node analysis.
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