Electronic circuit simulator in Russian online. List of programs for designing electronic circuits

Let's start with the fact that the term electrical (principal) circuit is used in electronics by radio amateurs. This article will be useful to students, engineers and hobbyists.

But what to do when there are no resources and time? Various online services come to the rescue. It turns out that drawing a diagram online is easy. Such services for drawing diagrams, the so-called diagram editors, are created specifically to “simplify the life” of the developer and, of course, differ in both ease of use when creating a diagram and functionality. The same circuit drawing functions exist in many automatic circuit design systems.

How to understand such diversity and choose a service that suits your requirements? What to do when you are sitting at someone else’s computer and it does not have the necessary CAD programs? The main thing is to have an Internet connection.

So, on the Internet there are enough services for drawing those same diagrams and even simulating the operation of the schemes. There are only three really good ones, with a complete list of radioelements, 123D Circuits And . Let me tell you right away that they do not contain Russian, only English, perhaps Google Translate will help you.

123D Circuits — company project Autodesk Inc, the one who made everyone famous AutoCAD. 123D Circuits is tightly integrated Arduino(Arduino is a small board with its own processor and memory). By registering you get a full-fledged CAD editor which includes tools such as:

• online project simulator ()

• online circuit diagram editor ()

• online circuit board editor ()

• Another interesting feature of this project is that the circuit simulation includes a firmware code editor with a debugger ()

Also in 123D Circuits there is a whole database ( Libraries) radioelements and their UGO. All actions and results of work in this online editor are saved in your account on the cloud, there is also export to the program Gerber. Overall, the company presented a good product to users.

is a free tool for drawing diagrams. A very large list of capabilities of this service, starting with simple drawing and ending with exporting a diagram in .png and .pdf, sharing on social networks and direct printing. Having an account in SchemeIt, you can save an unfinished diagram and finish it at any time.

The editor itself looks like this:

The bottom line is this: a pretty good tool for quickly drawing a diagram and saving it in a graphic format, but it lacks several UGO radio elements.

— assembly and testing of circuits directly in the browser. This service is more aimed at testing the assembled circuit, because There are clearly not enough elements there, but in those that are there, you can specify various parameters, such as voltage and current, resistance and capacitance, etc. for accuracy during testing. Of course, there is also export to graphic formats, as well as saving the circuit if you have an account in CircuitLab.

The “laboratory” looks like this:

To summarize, I will say that this service does not have much that is found in conventional CAD programs, although in principle it will be able to show a dependence graph, but it all depends on the specific scheme. There are enough UGO elements, but there are more of them in SchemeIt.

So we tried to draw a diagram online:

We looked at three main services for drawing diagrams online; all the other services I googled simply use their database and API.

If you find something similar on the Internet, please let us know - the article will be added with an indication of your nickname. We are waiting for comments and see you!

Electrical schematic software is a tool used by engineers to create electronic circuits for the purpose of designing and testing products during the design, manufacturing, and operational stages. Accurate display of parameters is done using a scale. Each element has its own designation in the form of symbols corresponding to GOST.

Software for electrical circuits: why do I need it?

Using electrical diagramming software, you can create precise drawings and then save them electronically or print them.

IMPORTANT! Almost all programs for drawing diagrams have ready-made elements in the library, so you don’t have to draw them manually.

Such programs can be paid or free. The former are characterized by great functionality, their capabilities are much wider. There are even entire automated CAD design systems that are successfully used by engineers all over the world. With the use of programs for drawing diagrams, the work is not only fully automated, but also extremely accurate.

Free programs are inferior in functionality to paid software, but with their help you can implement projects of initial and medium complexity.

The software allows you to simplify your work and make it more efficient. We have prepared a list of popular programs for creating circuits used by specialists around the world. But first, let's figure out what schemes are and what types they come in.

Programs: what schemes are they intended for?

The diagram is a graphic type design document. It displays the components of the device and the connections between them in the form of symbols.

The diagrams are part of the design documentation set. They contain the data necessary for the design, production, assembly, regulation, and use of the device.

When are diagrams needed?

1. Design process. They allow you to determine the structure of the product being developed.
2. Production process. They provide an opportunity to demonstrate the design. On their basis, a technological process, installation and control method are developed.
3. Operation process. With the help of diagrams, you can determine the cause of the breakdown, correct repair and maintenance.

Types of schemes according to GOST:

• kinematic;
• gas;
• energy;
• pneumatic;
• hydraulic;
• electrical;
• combined;
• optical;
• divisions;
• vacuum

Which program is better to work in?

There are a huge number of paid and free programs for developing electrical drawings. The functionality is the same for all, with the exception of advanced features for paid ones.

Visio

QElectro Tech

sPlan

Visio

Pros of QElectro Tech

1. export in png, jpg, bmp or svg format;
2. checking the functionality of electrical circuits;
3. It is easy to create electrical wiring diagrams, thanks to the presence of an extensive library; completely in Russian.

Cons of QElectro Tech

1. limited functionality;
2. creating a network diagram of initial and medium complexity.

• Stages of work

Simple interface. A collection of figures for assembling electrical circuits is located on the left in the main window. On the right side there is a work area.

1. Create a new document.
2. Using the mouse, drag the required number of elements into the work area to create and simulate the desired result.
3. Connect the parts together. Connections are automatically converted to horizontal and vertical lines.
4. Save the file with the qet extension.

There is a function to build your own elements and save them in the library. The shapes can be used in other projects. Software in Russian. The program is suitable for Linux and Windows.

sPlan

A program for building electronic and electrical circuits, drawing boards. When moving elements from the library, they can be snapped to a coordinate grid. The software is simple, but allows you to create drawings and drawings of varying complexity.

Photo 3 - The process of drawing up a diagram in sPlan

sPlan's mission is to design and develop electronic circuit diagrams. To simplify the work, the developer has provided an extensive library with geometric blanks for designations of electronic elements. There is a function for creating elements and saving them in the library.

Stages of work:

1. Create a new document.
2. Drag the required elements from the library of elements. Shapes can be grouped, rotated, copied, cut, pasted, and deleted.
3. Save.

Qucs - open-source CAD for electronic circuit modeling

• CAD/CAM

There aren't that many open-source CAD programs out there at the moment. However, among electronic CAD (EDA) there are some very worthy products. This post will be dedicated to the open source electronic circuit simulator. Qucs is written in C++ using the Qt4 framework. Qucs is cross-platform and released for Linux, Windows and MacOS.

The development of this CAD system began in 2004 by the Germans Michael Margraf and Stefan Jahn (currently not active). Qucs is currently being developed by an international team, which includes me. The project leaders are Frans Schreuder and Guilherme Torri. Below the cut we will talk about the key capabilities of our circuit modeler, its advantages and disadvantages compared to analogues.

The main window of the program is shown in the screenshot. There, a resonant amplifier on a field-effect transistor was simulated and oscillograms of the voltage at the input and output and also the frequency response were obtained.

As you can see, the interface is intuitive. The central part of the window is occupied by the actual simulated circuit. Components are placed on the diagram by dragging and dropping from the left side of the window. Modeling views and equations are also special components. The principles of editing circuits are described in more detail in the program documentation.

The Qucs schema file format is XML based and comes with documentation. Therefore, Qucs schema can be easily generated by third party programs. This allows you to create circuit synthesis software that is an extension of Qucs. Proprietary software typically uses binary formats.

Let's list the main components available in Qucs:

1. Passive RCL components
2. Diodes
3. Bipolar transistors
4. Field effect transistors (JFET, MOSFET, MESFET and microwave transistors)
5. Ideal op amps
6. Coaxial and microstrip lines
7. Library components: transistors, diodes and microcircuits
8. File components: subcircuits, spice subcircuits, Verilog components

The component library uses a proprietary XML-based format. But you can import existing component libraries based on Spice (listed in the datasheets for electronic components).

The following types of simulation are supported:

1. DC Operating Point Simulation
2. Frequency Domain Modeling on AC
3. Time Domain Transient Simulation
4. S-parameter modeling
5. Parametric analysis

Simulation results can be exported to Octave/Matlab and data post-processing can be performed there.

Qucs is based on a newly developed circuit simulation engine. A distinctive feature of this engine is the built-in ability to simulate S-parameters and SWR, which is important for the analysis of RF circuits. Qucs can convert S-parameters into Y- and Z-parameters.

The screenshots show an example of modeling the S-parameters of a wideband high-frequency amplifier.

So, a distinctive feature of Qucs is the ability to analyze complex frequency characteristics (CFC), construct graphs on the complex plane and Smith charts, analyze complex resistances and S-parameters. These capabilities are not available in the proprietary MicroCAP and MultiSim systems, and here Qucs even outperforms commercial software and achieves results unattainable by Spice-based circuit simulators.

The disadvantage of Qucs is the small number of library components. But this drawback is not an obstacle to use, since Qucs is compatible with the Spice format, which contains models of electronic components in datasheets. The modeler is also slower than similar Spice-compatible modelers (such as MicroCAP (proprietary) or Ngspice (open-source)).

We are currently working on the ability to provide the user with a choice of engine for circuit simulation. It will be possible to use the built-in Qucs engine, Ngspice (a Spice-compatible console modeler similar to PSpice) or Xyce (a modeler with support for parallel computing via OpenMPI)

Now let’s look at the list of innovations in the recent release of Qucs 0.0.18 promising areas in Qucs development:

1. Improved Verilog compatibility
2. Porting of the interface to Qt4 continues
3. Implemented a list of recently opened documents in the main menu.
4. Export of graphs and diagrams into raster and vector formats has been implemented: PNG, JPEG, PDF, EPS, SVG, PDF+LaTeX. This function is useful when preparing articles and reports containing simulation results
5. Ability to open a schematic document from a future version of the program.
6. Fixed bugs related to the modeler freezing under certain conditions.
7. A system for synthesizing active filters for Qucs is being developed (expected in version 0.0.19)
8. Development of interface with other open-source engines for modeling electronic circuits is underway (

This article will introduce the 20 best programs for designing electronic circuits and printed circuit boards, including free, commercial and shareware programs.

Learning layout or electronic diagram design is not difficult if you choose the right design tool. A number of criteria were used to create the list, such as:

• software quality;
• user friendliness;
• complexity of the design environment.

Free software for drawing electronic circuits:

Below is a list and brief description of free programs for designing electronic circuits.

LTspice

This simulation software ranges from linear technologies to electronic circuit design, SPICE simulation, signal diagramming and many more features:

• multilingual graphical interface MDI to open and edit multiple files in a session;
• built-in circuit editor with a database of 2 thousand electronic components;
• simulator of analog and mixed circuits with file import mode SPICE;
• post-processor for generating graphical curves of analysis results and reports;
• the ability to personalize display mode settings and keyboard shortcuts;
• convenient functions for scaling the viewing window, printing and copying to the clipboard;
• integrated sampling scheme database LTSpice .ASC.

You can find out more and download LTspice on our .

"Compass Electric"

A wonderful graphic Russian program, which is a variation of the Compass program. Used in the electrical field to create electrical circuit diagrams for various mechanisms. The program has extensive capabilities. Using the "Compass Electric" program it is possible to draw any electrical circuit.

The Compass Electric program has three versions, different in functionality: express version, standard version, professional version. The main components of this program are:

• Database, which is the foundation for documentation design;
• An editor for diagrams and reports, in which the process of creating and issuing finished project documentation takes place.

DipTrace

This is a program for designing professional printed circuit boards. Quite intuitive interface, great functionality. Dip Trace supports several operating modes. Each DipTrace package includes the following programs:

• scheme editor;
• circuit design program - printed circuit board layout;
• component editor;
• corpus editor;
• autorouter;
• 3D visualization;
• function for importing libraries and projects from other EDA programs.

You can download and get more detailed information with the training book on ours.

EasyEDA

A free and cloud-based EDA tool that allows you to create schematics, SPICE simulations and PCB design. Its database already contains more than 70,000 ready-made diagrams and more than 15 thousand PSpice libraries, which allow you to quickly draw diagrams in a web browser. Projects prepared in EasyEDA can be published or saved in the cloud. Files can also be exported to many formats, including JSON.

EasyEDA software is compatible with Altium, Eagle KiCad and LTspice tools, from where you can import additional libraries. If desired, the manufacturer offers a relatively inexpensive printed circuit board design in accordance with the created design. By accessing applications in the cloud, we gain convenience, mobility, and cross-device compatibility.

TinyCAD

This is a Windows diagramming program available for free download from SourceForge. Supports standard and custom symbol libraries. TinyCAD is most often used to create:

• single line diagrams;
• creating flowcharts;
• developing technical drawings for presentation purposes.

Xcircuit

A free circuit drawing program from Open Circuit Designs designed for the Unix/Linux environment, but you can use it on Windows if you have a running server or Windows API. There are many free versions.

Dia

It is a basic design tool with the ability to draw block diagrams. Dia is a program for beginners, only for people entering the field of drawing electronic circuits. The program is licensed under GPL and is available in Mac and Linux versions (no Windows version). Most often used to create block diagrams.

Pspice - Student Version

The free version of Pspice software was created for students. It contains limited versions of products such as: PSpice A/D 9.1, PSpice Schematics 9.1, Capture 9.1. Allows you to design and simulate analog and digital circuits.

SmartDraw

Electrical circuit design software from SmartDraw LCC is considered one of the best CAD software for drawing electronic circuits, block diagrams, HVAC, etc.

The free version of SmartDraw is a stripped-down version of the paid software and lacks advanced features.

1-2-3 scheme

This is a simple editor program for creating electrical circuits that will allow you to quickly and easily create and draw any circuit of any level of complexity. In the application you have the opportunity to create electrical circuits of panels for housing complexes; it is worth noting that the program is in Russian, so it is easy to use.

1-2-3 diagram is one of the free applications that allows you to equip Hager electrical panels with equipment from the same manufacturer. The main feature of the program is the choice of a housing for an electrical panel that meets all safety requirements and standards. The choice is made directly from the Hager range of models.

More detailed information about the program can be found on our.

Microsoft Visio

The main task of the program is to develop and create drawings of various types of electronic circuits using templates. The program has the ability to create:

• various engineering and technical drawings;
• electronic circuits;
• create effective presentations;
• develop organizational charts, marketing and many others.

In addition to its wide range of capabilities, the program has a rich set of ready-made elements, visio templates for electrical circuits, as well as a library of beautiful three-dimensional drawings. Creating various electronic circuits is not the only task for MS Visio.

KiCad

It is an open source package that was created by the Frenchman Jean-Pierre Charras. This software includes a number of integrated independent programs, such as:

• kicad - project management application;
• EESchema is an advanced schema editor with which you can create hierarchical structures;
• Pcbnew - editor for creating printed circuit boards based on circuit design;
• gerbview - gerber file viewer and many others.

KiCad is compatible with many operating systems as it is based on the wxWidgets library.

More detailed information can be found on our.

CadSoft Eagle

High quality PCB design software from the German company CadSoft, part of Premier Farnell plc. EAGLE is an acronym for Easy to Use Graphics Layout Editor, which stands for Easy to Use Graphics Editor.

CadSoft Eagle has gained great popularity due to its simplicity and the ability to use one of the versions - Eagle Light - for free. The free version of the program does not allow you to create electronic circuits for commercial purposes.

The program is available for operating systems Windows, Linux, OS X.

Paid software for drawing electronic circuits:

Below is a list and brief description of paid programs for designing electronic circuits.

OrCAD

Cadence's most popular software, providing a complete environment for commercial PCB designs, contains all the components needed for PCB design, such as:

• module for introducing schemes;
• PCB editor with integrated design management.

To enhance design efficiency, the program offers interactive Push & Shove wiring technology.

TINA-TI

An affordable solution from DesignSoft, built for businesses and freelancers. It allows you to create:

• scheme;
• component layout;
• modeling;
• many additional functions.

A notable feature is also real-time testing of systems.

Altera

Provides a complete set of programming tools for each stage of the project, including software:

• NIOS II for embedded systems design;
• DSP Builder for designing digital signal processing systems;
• Quartus II and ModelSim for building logical systems.

The Altera Max+ Plus II (multi-address matrix programmable logic user system) system is an integrated environment for designing digital circuits in programmable structures. The Max+ Plus II system includes 11 integrated application programs.

Altium Design

The Altium Designer suite includes four main modules:

• scheme editor;
• 3D printed circuit board design;
• field programmable gate array (FPGA) design and data management.

Altium Designer is generally an expensive piece of software, but it excels in its ability to produce fast results for complex designs.

P-Cad

This is a program for creating printed circuit boards and electronic circuits. The P-CAD package includes two main components:

• P-CAD Schematic - schematic editor;
• P-CAD pcb is a printed circuit board editor.

For a long time, this program was used by a huge number of Russian developers of electronic circuits, the main reason for this popularity was its fairly intuitive and user-friendly interface. At the moment, the manufacturer has stopped supporting this software, replacing it with the Altium Designer program.

Proteus Design Suite

It is a complete software solution for circuit simulation and PCB design. It contains multiple modules for schematic capture, IDE firmware, and PCB layout that appear as tabs within a single integrated application. This provides a smooth AGILE workflow for the design engineer and helps products get to market faster.

The trial version of the application has full functionality, but does not have the ability to save files.

sPlan

An easy-to-use tool that has proven itself in engineering, crafts, education, research and teaching. It has also become a useful tool for many private users.

Create professional plans in very little time, from simple outlines to complex plans. The features of this program are:

• extensible symbol library;
• individual pages with form sheets;
• list of components;
• automatic numbering of components;
• convenient drawing tools.

The free version does not allow you to save, export or print files.

Write in the comments what programs do you use for creating circuits and designing electronic circuits?

List free electronic circuit simulation programs online 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. When you make sure the circuit function is good, you will create the 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 open source circuit emulators I tested 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 definitely a great program for learning and is 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 log into the 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 the Android and iTunes platforms. 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 An 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.