Programs for simulating electronic circuits in Russian. Qucs - open-source CAD software for modeling electronic circuits

EDA (Electronic Design Automation) is software for developing and testing electronic equipment. In the most general sense, Sprint Layout, which is so widespread in the Russian-speaking environment, can be classified as EDA. More well-known (and more complete products) include Eagle, DipTrace and Proteus. But they all have one small drawback - they are paid. Someone might object: the same Eagle, they say, also has a free version, albeit somewhat limited. However, these restrictions sometimes become not so much a hindrance as an irritation, such as the inability to position elements off the board, which makes it difficult to redistribute already located parts. Therefore, let's talk about KiCad - until recently little-known, but now gaining popularity software, somewhat burdened with cross-platform, but at the same time actively developing (the latest stable version was released in October 2014). In a couple of articles I will try to talk about the basic techniques and pitfalls of working with KiСad. As an example, let's take a simple Step-Up converter circuit on.

KiCad Program Overview

The main KiCad window is divided into several blocks

The main menu where you can create or open a project, archive it in zip or unpack it, specify a text editor for viewing files (for example, a list of elements) and an application for viewing PDF, select a language (currently there are 19 languages in the list, including Russian), read the help and copy full information about the installed version to the clipboard.
The second block contains (from left to right): creating a new project; creating a project from a template (there are no templates yet, but you can create them yourself; such templates will be added to the “Custom” list); opening an existing project; saving all files, be it a circuit diagram or a printed circuit board; archiving the current project in zip; updating the list of project files.
The third block contains the actual list of files - everything that has a name that matches the name of the project is displayed here.
The buttons of the fourth block allow you to navigate between the following editors: Eeschema - editor of electrical circuit diagrams of the device; CvPcb - comparison of component seats (in other words, selection of the body of a particular part); Pcbnew - printed circuit board editor; Gerbview - Gerber file viewer; Bitmap2Component - used to create logo images or to create components from existing images. Calculator - contains utilities such as a stabilizer calculator, tables of recommended track thicknesses for printed circuit boards, resistor color coding tables, etc.
Finally, the last block displays the actions we performed with the current project (what was opened, what was saved, etc.).

The creation of any device begins with the creation of a new project. Therefore, click on the button “ Start a new project».

Select the folder for the future project, write its name, click “ Save", regardless of the style of my windows, in Windows they will be familiar and familiar.

The project name will appear in the left column and we can finally click on the button Eeschema. An editor like this will open...

And KiCad will happily inform us that a certain file is missing. Everything is fine, it just reminds us that we haven't saved the diagram yet, so a blank sheet has been created. In general, KiCad's twists and turns of logic are sometimes amazing. What’s even funnier is that this miracle is supported not by just anyone, but by CERN themselves.

But we digress, let's press OK. In the window that opens, we see the sheet on which our future diagram will be located. Actually, it can be located outside of this sheet, but these parts simply will not be printed. Around the workspace we see a bunch of different buttons; there is no point in explaining the purpose of each of them, because a hint pops up on each of them when you hover (naturally, in Russian). It is worth identifying only the main ones:

Don't be alarmed, everything is not as difficult as it seems at first. As a circuit, as mentioned above, I chose a converter based on MCP34063, also known as MC34063. The diagram is taken from the datasheet:

First of all, let’s look at the menu item “ Settings", where in addition to color settings, appearance parameters (grid pitch, connection thickness, etc.), we are interested in the item " Library" Libraries in KiCad, like in Eagle, contain components used in constructing a circuit. Let's make sure that the files supplied with KiCad are connected and present in the list.

Other libraries can be easily Googled and added via the " Add"(which is quite logical). I also advise you to download component libraries converted from Eagle. However, you should not include all the files at once - this can lead not only to slower loading of the project, but also to annoying messages about duplication of components in libraries. Having dealt with the little things, click on the button “ Place a component" in the right panel (or the item " Component" in the menu " Post") and click anywhere on the sheet.

In the window that appears, write in the “Name” field: 34063 - here, unlike Eagle, you do not need to know the exact name of the component, just a part of it is enough.

You can also select a component from the list (button " List of all") or by selecting a suitable symbol (" Select by browsing"). Click OK. If the entered designation appears in several components, we are prompted to select the one we need.

Place the symbol on the sheet.

Attention, rake! KiCad inherited the good tradition of hotkeys from Unix systems. To move a positioned component, it is not enough to simply click on it. You should move the cursor over the component and press the Latin [M] (from English Move) on the keyboard, or right-click on the component and select the corresponding item in the context menu. In the same way, turn with the [R] key and drag (that is, move without breaking away from the chains) with the [G] key. We add a component through the combination, and a conductor through it. The same thing can be done through the context menu. Hotkeys may seem awkward, but in fact most of them are intuitive to a user familiar with English words. In addition, by memorizing a couple of dozen combinations, you can significantly speed up your work. So don’t be lazy and read the certificate, fortunately it has been completely translated into Russian.

Following the microcircuit, we add the remaining components to the sheet. To add passive elements, just write their more or less generally accepted designations (R, C, CP, etc.) in the “Name” field. Once selected, components remain in the “History List” field for quick addition.

To complete adding components, press the key or select the item “ Set aside the tool" To connect the circuits we use " Place Explorer».

It turns out something like this:

If the connection of conductors seems inconvenient (or if the circuit is divided into separate blocks), then it makes sense to use labels. They link separate sections of a chain, just like names in Eagle. KiCad has several types of labels (local, global and hierarchical). Global and hierarchical are used when the blocks of the diagram are located on several sheets and they need to be linked together. The most primitive one is enough for us, so we choose “ Place chain name(local label)".

Click on the desired connection and write the name of the label. At the same time, we select the orientation of the mark - where its connecting point will be located.

Attention, rake! KiCad does not permanently tie the tag to the connection like Eagle does. Once created, a tag can be moved like any other component, but in order for it to be “picked up” by a net, its connecting point must align with a connection on the net or component.

Having placed the necessary marks, we get the following picture:

Now let's add ground and power circuits. They belong to the tool " Place power port»

We write in the search bar “ GND».

Or select the desired component using the button “ List of all»

Having placed the land, we do the same with Vin, selecting the appropriate component. It will have to be connected to a separate conductor. To do this, take the tool “ Place Explorer", click on the desired section of the circuit and pull the conductor to the side. In order to end it not at the connection point, but in an arbitrary place on the sheet, double-click the mouse.

We place the power supply for our circuit. At the output it is enough to simply place a label like “ Vout».

Now let's designate the components and indicate their values. This is done quite simply: you need to hover the cursor over the component and press the [ key V] to assign a denomination and the [ U] to indicate the serial number. However, numbers can also be assigned automatically. To do this, press the button “ Label the components on the diagram»

In the window that appears, configure the notation parameters (you can leave it as is). If parts of the components have already been assigned serial numbers, then you can either continue the current numbering or start it again by first clicking on the button Reset designations».

Having finished with the preparation, click “Design components” and agree with the proposal to give serial numbers to everything. Let's arrange the denominations. Hover the cursor and press [ V]. If several components are in focus, KiCad displays a small menu asking us to specify which component we want to edit.

Finally, check the correctness of the diagram by clicking the “ Perform check...»

In the window that appears, you can configure the verification parameters - the rules for connections between pins (what is considered an error, what is a warning) on the “Parameters” tab.

On the “ERC” tab, click “ ERC test"... and we see error messages.

In this case, green arrow markers will appear on the diagram next to the problem areas. Selecting a line from the list of errors in the ERC window will take us to the corresponding marker. So what is our problem? Here's the thing: it's not enough for KiCad to just put a power port on the circuit; it also needs to indicate that the power port added through the power port is just a power port, and not something else. The apotheosis of crutches, in my opinion, but completely solvable. You just need to pick up the tool again " Place power port» and select the component in the list of ports PWR_FLAG.

The following symbol will appear on the diagram:

PWR_FLAG is displayed only on the diagram and is needed solely to successfully verify its correctness. We connect it to the positive power supply and the GND circuit. We run the ERC test again - there are no more errors.

Attention, rake! When microcircuits with pins that are not connected anywhere are used, the ERC test will swear in their direction. To prevent this from happening, the “Not Connected” flag should be set on all unused pins.

As a result, we ended up with this diagram:

To print it, click on the button on the top panel " Printing the diagram", or select this item in the menu " File».

Attention, rake! Linux users may encounter a problem where a blank sheet is printed instead of a diagram. This happens due to wxWidgets not working correctly with printers.

a) update wxWidgets to version 3.0;
b) use the export of the diagram to an accessible graphic format or to a PDF file, and then print it.

It’s not entirely clear what motivated the KiCad developers, but the familiar export is located in the “ Draw».

Here we select the format, adjust the color mode and image quality (default line thickness), and choose whether we need to export the sheet frame along with the diagram. That's probably all you need to know to get started with EESchema. And next time we will talk about the intricacies and creation of new components for libraries. Author of the review - Vetinari.

Discuss the article SOFTWARE FOR DEVELOPING AND TESTING CIRCUITS

A program for simulating radio circuits, with visual
demonstration of the operation of the constructed circuit
in the form of a 3D finished device and transient graphs.
Program for drawing up radio circuits.
Also included here is the ability to layout printed circuit boards
and programming PIC controllers.
The distribution includes a visual presentation.
54Mb

Program for creating electronic circuits.
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It is very easy to draw radio circuits - interface
organized in the simplest possible way.
Program for creating electronic projects.
Before starting the simulation mode, do not forget in the menu
Simulate->Edit Simulation Cmd in the Transient tab
specify the Stop Time calculation time, for example 25m (25ms).
In simulation mode, a graph will open on half the screen.
When we click the cursor on the required wire on the circuit elements,
the graph will display the change in potential at this point
during the specified calculation time. To see
graph of current changes through a device element should
just click the cursor on the required element of the circuits.
54Mb download simulator LTspiceIV

PCB tracing software
for digital electronics
password: mycad2000
copy crack to the directory with the program
and run 10Mb

Tags: Here is software for designing and modeling schematic solutions. It's not difficult to figure it out. Radio engineering programs are useful for radio amateurs. And this is not surprising. This program is needed for simulation of radio engineering structures. These books contain the most interesting ideas for useful devices, giving each radio amateur the opportunity to choose what he needs from a great variety of solutions and designs on the hall sensor a3144, tested and tested in practice.

Intuitive user interface

Multi-level hierarchy and support for multi-sheet boards allows you to quickly and efficiently develop complex circuit drawings.
positioning
The Arrange, List Position, and Automatic Component Arrangement functions help you quickly and easily optimize component placement and board dimensions.
Powerful tracing capabilities
A modern meshless autorouter is capable of efficiently and quickly routing complex multilayer boards with different types of components, as well as simple two-layer designs.
Comprehensive design review
Wide possibilities for checking the project at various stages of creation allow you to identify errors before sending files to the manufacturer.

Error Correction Method

10 Best Free Online Circuit Simulators

The list of free electronic circuit simulation software online is 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 an 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+ diagrams 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.

8. TinaCloud This modeling program has advanced features. It allows you to simulate, in addition to conventional mixed-signal and microprocessor circuits, VHDL, SMPS electrical supply and radio frequency circuits. Calculations for electronic modeling are performed directly on the company’s server and allow excellent modeling speed

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, has a convenient, intuitive interface. Calculates a three-phase electrical circuit, both with normal and emergency operating modes: when connecting the load with a star - a phase short circuit (short circuit), a 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 all-in-one tool for the full cycle of PCB development, 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 an image of the desired 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 a cell phone.

With this program you can find out the accessories that suit your phone, as well as see new products. The program updates the database automatically (Online) via the Internet, you will always be aware of the latest news! The program has a convenient Russian menu with icons, a flexible settings menu, and a definition 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 the 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! Electronics Workbench Multisim v8.2.12 circuit modeling system is designed for modeling and analysis of electrical circuits. 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. Each time the program is launched, a backup copy of the database file is created, 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.

Electronic Lab v2.2 (Three Phase Chains) Program for calculating three-phase electrical circuits

CadSoft Eagle 5.6.0

D-Navigator v 0.0.106 program for selecting accessories for a cell phone.

Electronics Workbench Multisim v8.2.12.SP1 free download.

Electronic reference book on bipolar transistors Tranzistors v 1.2

Cadsoft EAGLE 4.11 is a program for the development of printed circuit boards and circuits.

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.

Navigate discs at the speed of thought. Explorer Lista

Programs for simulating electronic circuits in Russian. Qucs - open-source CAD software for modeling electronic circuits

KiCad Program Overview

Suggested Solution

Intuitive user interface

Error Correction Method

Electronic Lab v2.2 (Three Phase Chains) Program for calculating three-phase electrical circuits

CadSoft Eagle 5.6.0

D-Navigator v 0.0.106 program for selecting accessories for a cell phone.

Electronics Workbench Multisim v8.2.12.SP1 free download.

Electronic reference book on bipolar transistors Tranzistors v 1.2

Cadsoft EAGLE 4.11 is a program for the development of printed circuit boards and circuits.

Libraries for Splan and Sprint-Layot

sPlan 6.0.0.2 Full (rus) - drawing diagrams. Tool for drawing electronic and electrical circuits.

Navigate discs at the speed of thought. Explorer Lista

Electronic Lab v2.2 (Three Phase Chains) Program for calculating three-phase electrical circuits

CadSoft Eagle 5.6.0

D-Navigator v 0.0.106 program for selecting accessories for a cell phone.

Electronics Workbench Multisim v8.2.12.SP1 free download.

Electronic reference book on bipolar transistors Tranzistors v 1.2

Cadsoft EAGLE 4.11 is a program for the development of printed circuit boards and circuits.

Libraries for Splan and Sprint-Layot

sPlan 6.0.0.2 Full (rus) - drawing diagrams. Tool for drawing electronic and electrical circuits.

Navigate discs at the speed of thought. Explorer Lista