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| Contents | ||||||
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| Free PCB Design Tools | ||||||
| FreePCB | Freeware open-source printed circuit board layout editor for Windows. | |||||
| PCB | An interactive printed circuit board editor for Unix/X11. It includes a rats nest feature, auto-router, trace optimizer, design rule checking, and can provide RS-274-X (Gerber), NC drill, and centroid data (X-Y data) output for use in the board fabrication and assembly process. | |||||
| PCB Artist | A free schematic capture and PCB Layout program for Windows. | |||||
| Free Circuit Design/Simulation Tools | ||||||
| OrCAD Demo | Free OrCAD Demo program, which includes demo versions of: OrCAD Capture CIS, PSpice A/D, OrCAD Layout, and SPECCTRA for OrCAD. The limitations of this demo are in the size and complexity of the design. | |||||
| Solve Elec | Freeware program for MAC and Windows to draw and analyze electrical circuits. | |||||
| TinyCAD | Freeware open-source program for drawing circuits running on Windows. It includes drawing libraries, a SPICE template engine and can export to PCB design programs. | |||||
| XCircuit | Open-source circuit-design program for Unix/X11. | |||||
| Free Electronic Circuits | ||||||
| Bowden's Hobby Circuits | Over 100 circuit diagrams, links to related sites, commercial kits and projects, newsgroups and educational areas. | |||||
| CXI | CXI stands for "Circuit Exchange International". CXI contains ten categories of schematics, a unified circuit analysis, design and theory page, and also a practical electronic section. | |||||
| delabs | Free Electronics Circuits Archive with some Technical Documents | |||||
| Discover Circuits | A collection of 11,000+ electronic circuits or electronic schematics cross-referenced into 500+ categories to find quick solutions for electronic design problems. | |||||
| Electronic Surveillance | Free schematics for electronics surveillance and intelligence, free RTF (video/audio) wireless transmitter circuits. | |||||
| Electronics and Radio Today | Free information, articles, and projects for the radio and/or electronics hobbyist. | |||||
| Electronics Lab | Free electronics circuits with full description, diagrams and PCB, electronics articles, links, downloads, electronic community. | |||||
| Electronics Project Design | Practical electronics project schematics, parts list, component descriptions, product testing and other references for electronics hobbyist and electronics designer. | |||||
| FC's Electronic Circuits | Free Circuit Archive | |||||
| Homo ludens electronicus | Free electronics projects including schematics. | |||||
| Laurier's Handy Dandy Little Circuits | Free circuits and projects complete with instructions and schematics by Laurier Gendron. | |||||
| Sam Electronic Circuits | Free schematics of electronic circuits for the hobbyist. The site is in Greek and English. | |||||
| Synthesizer DIY pages | Free electronics cicruits for analog synthesizers, such as: VCO's, VCA's, filters, a noice generator, ADSR envelope generators, etc. | |||||
| Techlib.com | Recommended! Free electronics circuits organized by category, hobby ideas, science, reference, etc. | |||||
| Vacuum Tubes | ||||||
| Frank's electron Tube Data sheets | Vacuum tubes datasheets. | |||||
| Vacuum Tube Amplifiers | Tutorial on how do tube amplifiers work. | |||||
| Hand-Made Vacuum Tubes | Claude Paillard constructs his own vacuum tubes by hand. The site is in french but it contains a lot of photo's and a 17-minute video where you can see him constructing a Vacuum tube from scratch. | |||||
| Space Charge Tubes | 12-V vacuum tubes and related projects. | |||||
| Steve's Tube Pages | Schematics, datasheets and other tube-related information. | |||||
| The Supereheterodyne receiver | A beginner's guide to the superheterodyne principle using Vacuum Tubes. A follow-up article on this subject can be found here: Receiver Technology. | |||||
| Vacuum tube biasing methods | Tutorial which describes the most common methods of obtaining negative bias voltages in vaccum tube circuits. See also the introductory article What's inside Vacuum tubes. | |||||
| Connector and Pinout reference | ||||||
| Chipdir | Numerically and functionally ordered chip lists, chip pinouts and lists of manufacturers, electronics books, CDROM's, magazines and links. | |||||
| The Hardware Book | Free collection of connector pinouts and cable descriptions. | |||||
| Electronics parts | ||||||
| 4 Star Electronics | Supplier of obsolete electronics components. | |||||
| Conrad | Big online shop for electronics components and related products. | |||||
| Digi-Key | Online shop for electronics parts. USA-based. | |||||
| electronics-eom | A large index of electronics manufacturers on the Net, ordered by category or alphabetically. | |||||
| Electrospec Obsolete Electronic Parts | Supplier of discontinued end of life electronic parts | |||||
| FindChips.com | Search engine, which searches the inventory of over 20 distributors for all types of electronics, including passives, connectors, optoelectronics, chips, and more. | |||||
| Radio Rotor | Online shop based in the Netherlands. | |||||
| Segor-electronics | Online shop for electronics components in Germany. | |||||
| The Electronics Source Book | Search engine for finding electronics components, manufacturers and distributors. | |||||
| WireTronic | Specialized in all types of wire, including resistance wire, tungsten wire, magnet wire, litz wire, nickel alloys, copper silver, platinum, palladium, tungsten, titanium, stainless steel, etc. | |||||
| Datasheets | ||||||
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| Digital Signal Processing | ||||||
| dspGuru | Online reference information, tutorials for beginners, tips and insights of interest to intermediate and advanced DSPers, DSP-related links, open source software for use in Digital Signal Processing. | |||||
| Microprocessors, Microcontrollers, Embedded | ||||||
| Propeller | Low-cost, high-performance processor containing eight (32-bit, 80 Mhz) processors, 32Kb Rom and 32Kb Ram on one chip which allows for real simultaneous multi-processing.
The Propeller chip can be programmed in both the high-level language 'Spin', and assembly. Various low-cost evaluation kits are available for around $ 100, such as the Propeller Starter Kit. See also these links and this Wikipedia article. | |||||
| Lakeview Research | A developer's resource for computer interfacing, especially USB, mass storage, serial (COM) ports, Ethernet and Internet communications for embedded systems, and parallel port. | |||||
| Microcontroller.com | Various projects for AVR- and M16C - Microcontrollers. | |||||
| eg3 | Information related to embedded systems, fpga's, rtos, etc. | |||||
| Robotics | ||||||
| RobotProg | Freeware robot-simulation program for MAC and Windows. First you draw the flowchart, then you run the program and watch one or more robots executing your program. | |||||
| Electronics Tutorials | ||||||
| Educypedia: electronics | Large directory of links to electronics tutorials, ordered by category. | |||||
| Electrolytic capacitors | What makes those "cans" tick, and how not to make them blow up. | |||||
| Electronics 2000 | A beginners guide to project building, technical data, interactive formulae calculators, software downloads, links to other sites and more. | |||||
| Electronics Tutorials | Over 120 free individual electronics tutorials covering a very wide range of electronics. | |||||
| ElectronicsTheory.com | Free online electronics course. | |||||
| ikalogic Projects and tutorials | Electronics and Robotics projects and tutorials. They are all explained clearly with pictures and schematics. | |||||
| Radio-Electronics.com | Free information, articles, tutorials and data for the radio and electronics industries about all aspects of radio and electronics. | |||||
| The Basic Soldering Guide | Helps beginners and novices to obtain effective results when soldering electronic components. | |||||
| the Electronics Club | Very good practical starting point for beginners. | |||||
| Tuned circuits | What makes those "cans" tick, and how not to make them blow up. | |||||
| Electronics News | ||||||
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| Free Electronics Resources | ||||||
| DigiBarn | The DigiBarn Computer Museum | |||||
| Electronic Symbols True Type Font | A freeware TrueType font containing electronic symbols which you can use in a word processor or graphics program. | |||||
| Electronics Hobbyist | Articles, tutorials, links, etc. | |||||
| ePanorama.net | Useful, large electronics portal and reference site. | |||||
| FreePatentsOnline.com | Free, fast and easy-to-use access to millions of patents and patent applications, including a patent search engine, an ever-expanding data collection. | |||||
| Leroy's Engineering Web Site | An Indexed listing of Electronic Engineering Web Sites of Component and OEM Equipment Manufactures: Analog and Digital Integrated Circuits [ICs]; Memory, Processor and Programmable Logic IC's, Bus Interface IC's, Passive, and Mechanical components; Resistors, Capacitors, Inductors and Sensors, EDA Software vendors, Electrical Engineering Standards and Specifications, On-Line Publications, Computers, Power Supplies, Electronic Enclosures, Chassis, Racks, Backplanes, Mother Boards, and Test Equipment manufacturers. Provides detailed design information regarding Interface, Computer, Cable, Processor and Embedded Buses. | |||||
| The Hobby Electronics from Japan | Circuits, tutorials, resources, electronics software, etc. | |||||
| TKB-4u | "The Technical Knowledge Base for You": articles, information and news related to electronics. | |||||
| US Patent Search | Enter the US patent number and download full issued patents and patent applications for free. | |||||
| WebEE | Schematics, tutorials, online calculators, newsgroups, magazines, etc. | |||||
| Related Freebyte Pages | ||||||
| Free Anti-Virus Software | Free and non-free anti-virus software, free firewalls, free email protection software, free virus prevention software, tests of anti-virus programs, links to specialized anti-virus sites, information about virus prevention, useful evaluation versions of anti-virus software, etc.. | |||||
| Free Business and Office Software | Free office suites, word processors, text editors, personal databases, currency converters, accounting software, calculators, document viewers, PDF utilities, etc. | |||||
| Free CAD software | Free Mechanical Engineering software for a variety of platforms. | |||||
| Free Computers | Free used and recycled computers, mostly for schools, non-profit organisations and disadvantaged individuals. | |||||
| Free eBooks | Free ebooks, free eBook authoring tols, free photo albums. | |||||
| Free File and Disk utilities | Various file and disk utilities. | |||||
| Education On-line | Online courses, education for kids, online university education, educational resources. | |||||
| Free Programming Tools | Free programming tools for Windows, Linux, etc. Free C++, C, Delphi, Basic, Assembler, Cobol, Pascal, Java, SQL, Databases; links to free compilers, databases, interpreters, IDE's, installers, components, libraries, languages, helpfile generators and more. | |||||
| Free Software created by Freebyte | Free Personal Information Managers, free File and Disk Utilities, free Address Books, free eBook Software and more. All created by Freebyte.com. | |||||
| Free System and Administrator utilities | Free process viewers, system analysis tools, network monitoring tools, registry tools, task schedulers. | |||||
| Freebyte Music Zone | Software synthesizers, music sites, midi sequencers, score/notation software, MP3 search engines, midi/MP3/WAV files for download, etc. etc. | |||||
| Freebyte News Center | The latest News Headlines; a large collection of news sites: English (USA/UK), German, Spanish, French, Italian, Dutch, Russian, Chinese, Brazilian, Arabic, Scandinavian, weather, sports, science, showbizz, economy, Internet, computer, etc. | |||||
| Freebyte Reference Desk | Free online encyclopedias, maps, satellite images, electronics, computing, physics, science, etc. | |||||
| Information wanted! | ||||||
| If you know of any good free and/or interesting Electronics software, directories and other resources, which are not listed here, please let us know! | ||||||
| About this page | ||||||
| Last updated on September 11, 2008
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