To design and test simple circuits, just take a breadboard and start placing the components of interest on it with the ability to quickly replace one or another element. Breadboards make it easy to check a circuit for errors before soldering the finished product. But if you have a more complex circuit, or if you need to do some fairly complex signal flow simulations of your design before you start building the final device, you'll need circuit simulation software, or simply a simulator.
The main requirements that most people (especially those new to electronics) have for simulators electronic circuits, are ease of use and as low a price as possible, ideally for free. Functionality is also very important.
Although it's easy to get trial version something like OrCAD PSpice, this software doesn't have all the features available unless you want to shell out the cash to purchase them. Luckily, there is a completely free, fully featured electronic circuit simulation software called Qucs (Quite Universal Circuit Simulator), released under the GPL license. Qucs offers a worthy alternative to other paid circuit simulators. Qucs runs its own software separately from SPICE because SPICE is not licensed for reuse.
Qucs has most of the components you'll need for professional-level modeling, and the software also has a huge number of various models transistors. The program itself can be found at http://qucs.sourceforge.net/. For more detailed information the Qucs Wikipedia page (https://en.wikipedia.org/wiki/Quite_Universal_Circuit_Simulator) lists all available features and also has a FAQ page.
According to the developers, Qucs is not yet completely finished, and, most likely, functions will be added from time to time, so there may not be a final version, however, today Qucs is already a very functional tool for modeling electronic circuits. The Qucs graphical user interface is well developed and allows you to customize circuits and present simulation results in various types diagrams. The screenshots below confirm this.
Proteus Professional is a circuit modeling system based on models of electronic components adopted in PSpice. A distinctive feature of the Proteus Professional package is the ability to simulate the operation of programmable devices: microcontrollers, microprocessors, DSPs, etc. Additionally, the Proteus Professional package includes a PCB design system. Proteus Professional can simulate the operation of the following microcontrollers: 8051, ARM7, AVR, Motorola, PIC, Basic Stamp.
Electronic Lab v2.2 (Three Phase Chains) Program for calculating three-phase electrical circuits
Electronic Lab (Three phase chains) - A program for calculating three-phase electrical circuits using the symbolic method, it is intuitive clear interface. Calculates a three-phase electrical circuit, both with normal and emergency operating modes: when connecting the load with a star - short circuit phases (short circuit), line wire break; when connecting the load with a triangle, there is a break in the load phase, a break in the line wire. Electronic Lab (Three phase chains) -
CadSoft Eagle 5.6.0
Cadsoft EAGLE is an excellent comprehensive tool for the full development cycle printed circuit board, starting with the creation of a circuit diagram and ending with the creation of a printed circuit board and its routing. The Pro version of the program allows you to develop printed circuit boards up to 1600x1600 mm in size (16 layers) with a resolution of up to 1/10000 mm. To do this, the program implements three modules: Schematic Module, Layout Editor, Autorouter. In addition, the program has a fairly large library, which contains a large number of standard and fairly common components, for example microcontrollers, that is, now there is no need to draw the image yourself required component on the circuit diagram and create a footprint for the printed circuit board.
D-Navigator v 0.0.106 program for selecting accessories for cell phone.
With this program you can find out the accessories that fit your phone, as well as see new products. The program updates the database automatically (Online) via the Internet, you will always be up to date latest news! The program has a convenient Russian menu with icons, flexible settings menu, detection system. Download - D-Navigator v 0.0.106 program for selecting accessories for a cell phone. D-Navigator v 0.0.106 program for selecting accessories for a cell phone. An example of selecting compatible accessories for Nokia 6230i.
Electronics Workbench Multisim is one of the world's most popular electronic circuit design programs, characterized by a combination of professional capabilities and simplicity, extensibility of functions from a simple desktop system to a networked enterprise system. This explains the widespread use of this wonderful program both for educational purposes and for industrial production of complex electronic devices. The archive contains the Professionals version, Russian models of op-amps, transistors, microcircuits.
Electronics Workbench Multisim v8.2.12.SP1 free download.
Features of Electronics Workbench Multisim v8.2.12 Electronics Workbench Multisim v8.2.12.SP1 - electronic laboratory on your computer at your fingertips! Circuit modeling system Electronics Workbench Multisim v8.2.12 is designed for simulation and analysis electrical diagrams. Electronics Workbench allows you to simulate highly complex analog, digital, and digital-to-analog circuits. The libraries available in the program include a large set of widely used electronic components.
Electronic reference book on bipolar transistors Tranzistors v 1.2
Electronic reference book on bipolar transistors with Russian letter indices (2089 pcs.) and their foreign analogues. Pin layout drawings; sorting by different parameters; saving in a file and printing the parameters of the selected device; the ability to edit and add new transistors to the directory. Every time you start the program, it creates backup copy database file, which will be used if the main database file is lost or damaged. Compression (defragmentation) of a database file, the size of which may unjustifiably grow after work related to writing/deleting data.
Cadsoft EAGLE 4.11 is a program for the development of printed circuit boards and circuits.
Cadsoft EAGLE is a comprehensive tool for PCB design, from creating a circuit diagram to creating a printed circuit board and routing it. The Pro version allows you to develop printed circuit boards up to 1600x1600 mm in size (16 layers) with a resolution of up to 1/10000 mm. To do this, the program implements three modules: Schematic Module, Layout Editor, Autorouter. In addition, the EAGLE program has a fairly large library containing many standard and fairly common electronic components, such as microcontrollers, so you will not need to draw an image of the component on the circuit yourself and create a footprint for the printed circuit board.
Libraries for Splan and Sprint-Layot
Download >>>>> Library for Splan_5.0 Download >>>>> Library for Splan_4.0 and Splan_4.0_plus Download >>>>> Library for Splan_3.0 Download >>>>> Library for Sprint-Layot
sPlan 6.0.0.2 Full (rus) - drawing diagrams. Tool for drawing electronic and electrical circuits.
A simple and convenient tool for drawing electronic and electrical circuits, sPlan 6.0.02, has been updated. The program makes it easy to transfer symbols from a library of elements to a diagram and link them to a coordinate grid. sPlan has many drawing and editing tools that make diagram development convenient and efficient, such as auto-numbering of elements, compiling lists of elements, and others. sPlan contains so many convenient and varied functions that their use is limited only by your desires and needs, you can create a wide variety of drawings and diagrams!
Navigate discs at the speed of thought. Explorer Lista
Sometimes you can look at ordinary and familiar things from a different angle and get completely unexpected results. Windows Explorer is already in its second decade. It would seem that there could be something new in it? It turns out that in a couple of minutes you can make Explorer much more convenient and faster. The object of our attention today will be the Explorer Lista program, developed for Windows XP/2000/2003. You can download it here. After installation and launch, a navigation bar appears in Explorer.
List free programs online electronic circuit simulation very useful for you. These circuit simulators that I offer do not need to be downloaded on a computer and can be run directly from the website.1. EasyEDA electronic circuit design, circuit simulation and PCB design:
EasyEDA is amazing free online circuit simulator, which is very suitable for those who love electronic circuit. EasyEDA team has been committed to making a sophisticated design program on a web platform for several years now, and now the tool is becoming wonderful for the users. The software environment allows you to design the circuit yourself. Check the operation through the circuit simulator. Once you make sure the circuit function is good, you will create a PCB with the same software. There are over 70,000+ charts available in their web databases along with 15,000+ Pspice library programs. On the site you can find and use many designs and electronic circuits made by others because they are public and open source hardware. It has some pretty impressive import (and export) options. For example, you can import files into Eagle, Kikad, LTspice and Altium designer, and export files as .PNG or .SVG. There are many examples on the site and useful training programs that make it easy for people to manage.
2. Circuit Sims: This was one of the first web based circuit emulators with open source I tested it a few years ago. The developer failed to improve the quality and increase the graphical user interface.
3. DcAcLab has visual and attractive plots, but is limited to circuit simulation. This is certain great program for learning, very easy to use. This makes you see the components as they are made. This will not allow you to design the circuit, but will only allow you to practice.
4. EveryCircuit is an online electronics emulator with well-made graphics. When you enter online program, and it will ask you to create a free account so you can save your designs and have a limited area to draw your diagram. To use it without restrictions, it requires an annual fee of $10. It can be downloaded and used on Android platforms and iTunes. Components have limited ability to simulate with small minimum parameters. Very easy to use, it has an excellent electronic design system. It allows you to include (embed) simulations in your web pages.
5. DoCircuits: Although it leaves people with a first impression of confusion about the site, but it gives many examples of how the program works, you can see yourself in the video "will start in five minutes." Measurements of electronic circuit parameters will be demonstrated with realistic virtual instruments.
6. PartSim electronic circuit simulator online. He was capable of modeling. You can draw electrical circuits and test them. It's still a new simulator, so there are several components to make the simulation to choose from.
7. 123D Circuits Active program developed by AutoDesk, it allows you to create a circuit, you can see it on a breadboard, use the Arduino platform, simulate an electronic circuit and finally create a PCB. The components will be demonstrated in 3D in their actual form. You can program Arduino directly from this simulation program, (it) is really impressive.
With this article I begin to highlight one of the the most interesting topics this is a computer topic, they also say circuit modeling of circuits of various electronic devices.
In general, the term modeling of electronic circuits has many synonyms, this includes emulation of electronic circuits, simulation of electronic circuits, etc. I will stick to the term “ computer modelling“or modeling circuits on a computer, it doesn’t matter.
So, let's go.
Today there are many computer programs, which are intended primarily for the development of various electronic devices and in such programs there is one of the important functions - emulation of electrical circuits.
I will list only the most famous of them:
LTSpice and many other programs.
Today I want to introduce you to a program from National Instruments - this is a Multisim circuit emulator.
The free Multisim program with a limit of 50 elements in the circuit can be downloaded from the manufacturer’s website at https://lumen.ni.com/nicif/confirmation.xhtml, where you can also find a version for educational institutions on the website, which is more expanded than the previous one , but also has its limitations https://lumen.ni.com/nicif/us/academicevalmultisim/content.xhtml
Let's start by studying the program interface.
The main functional panels of the program are shown in the following figure.
The component panel is of particular interest. Using the component panel, you can access the component database. When you click on any of the selected circuit component icons, a window opens Component selection. In the left part of the window you can select the required component.
The entire component database is divided into sections (passive elements, diodes, transistors, microcircuits, etc.), and sections into families (for example, for diodes, these are the diodes themselves, zener diodes, LEDs, thyristors, etc.). I hope the idea is clear.
Also in the component selection window you can see the designation of the selected component, a description of its function, and select the type of housing.
Simulation of circuits in the Multisim program.
Now let's move on to practice. Let's collect simple diagram in the Multisim program and let's make it work!
I downloaded from the Internet a multivibrator circuit with two transistors, where LEDs are used as a load.
We can use measuring instruments, for example a virtual oscilloscope, and look at the signals at various points in the circuit.
We are convinced that the circuit works, this is where I end my acquaintance with the Multisim program. If you are interested in the topic of circuit modeling, write your questions in the comments, I will answer with pleasure.
And finally, by tradition, I present to you a detailed video on modeling circuits in the Multisim program.
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A simulator with a user-friendly interface for the development and calculation of electronic circuits and circuits.
Quite Universal Circuit Simulator software is an editor with graphical interface with a complex technical capabilities for designing circuits. To manage complex circuits, the ability to expand subcircuits and form blocks is included. The software includes built-in text editor, applications for calculating filters and matched networks, line calculators and attenuator synthesis. The drawing can be framed with a frame and a standard stamp.
Qucs includes a wide base of modern components divided into categories: discrete (resistors, capacitors, etc.), nonlinear (transistors and diodes), digital (basic digital devices and logic gates) and others (sources, meters). Of particular interest are the figures and diagrams.
Qucs can be configured for many languages, including Russian.
The program runs on Mac OS, Linux and Windows XP, Vista, 7 and 8.
For free.
Simulator “The Beginning of Electronics”
There is a very interesting program, which is a simple simulator for demonstrating the operation of electrical circuits and the operation of measuring instruments. Its convenience lies not only in its clarity, but also in the fact that the interface is in Russian. It allows you to model very simple circuit diagrams. The program is called “Beginnings of Electronics”. Link to it at the bottom of the page, video of Mikhail Mayorov’s channel.
This Chinese store has everything for radio amateurs and DIYers.
The program works from Windows 98 to Windows 7. The interface looks like this.
Below is a drawing of the printed circuit board, but for us the socket with the breadboard is of greatest interest. At the top there are control buttons: load a circuit from a file, save a circuit, clean a breadboard, get a multimeter, get an oscilloscope, show parameters of parts, condition of parts, reference book (concepts about electricity are briefly outlined), a small list of laboratory work for doing it yourself, instructions for using the simulator, information about the authors, exiting the program.
The video shows how the circuit simulator works.
What can you build on a circuit simulator?
You can collect quite a lot of interesting things with this simple simulator. First, let's model a regular flashlight. To do this, we need a light bulb, two batteries and, naturally, all this will need to be connected with jumpers. Well, what is a flashlight without a switch and a light bulb?
Double-click to open the battery parameters window. On the tab that appears we see the voltage, internal resistance, showing its power, minipolarity. IN in this case The battery lasts forever.
When the circuit is assembled, we press the switch twice and for some reason the light bulb burns out. Why? The total voltage of series-connected batteries is 3 volts. The default light bulb was 2.5 volts, which is why it burned out. We install a 3-volt light bulb and turn it on again. The light bulb glows happily.
Now let's take a voltmeter. His “palms” light up. These are measuring probes. Let's move the probes to the light bulb and take a measurement DC voltage with a limit of 20 Volts. The monitor shows 2.97 volts. Now let's try to measure the current. To do this, take a second multimeter. The device connected to the circuit showed almost 50 milliamps.
Almost like a real multimeter, you can measure many parameters. There is also an oscilloscope in the simulator, whose beam brightness can even be adjusted. In addition, there is a rheostat, you can move the engine. There is a variable capacitor, shunts, a heating stove, resistors, fuses and more. Unfortunately, there are no transistors in this simulator.