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Circuit Design

Electronic circuit design and misc. calculators

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    • HamCalc v1.3 - By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculations. Attenuators. Audio Filter design.Coil Winding. Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps QRA Locator to Latitude/Longitude (and back) Radio Horizon calculator Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations
    • Electronics Toolkit - Solve electrical and electronics equations quickly and easily with the Electronics Toolkit
    • Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.
    • Toroid Pro - Designed by microwave engineers to provide filter, radio,microwave and Ham radio engineers with all relevant information of an inductor and core at his or her finger tips
    • WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.
    • Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter
    • 5Spice - Analog circuit simulation program for the typical circuit designer. Commercial version for windows
    • AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs
    • Inductor Design Software - RF toroid - A free too designed to assist in the selection of iron and alloy powder cores. RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.
    • Meter - This meter scale drawing program is designed to have a computer do the hard work in making a precision scale for a d'Arsonval analog meter. The resulting scales will typically be nicer-looking than those found on many commercial meters.
    Alphabetical
    • 5Spice - Analog circuit simulation program for the typical circuit designer. Commercial version for windows
      [Hits: 3669 | Votes: 6 | Rate: 7.83]
    • AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs
      [Hits: 3656 | Votes: 8 | Rate: 6.88]
    • Ansoft Designer - Sesign-management environment and circuit simulator for radio frequency (RF) and microwave hardware development
      [Hits: 569 | Votes: 4 | Rate: 2.75]
    • atlc - Arbitrary Transmission Line Calculator. - Unix or linux programme atlc calculates the impedance of electrical transmission lines of totally arbitrary cross section.
      [Hits: 909 | Votes: 9 | Rate: 6.44]
    • Beechhurst Electronic Design Solution - Complete software design suite DVD. From schematic to Gerber files for PCB vendors.
      [Hits: 295 | Votes: 1 | Rate: 1.00]
    • Capacitor kVAr calculator - Online calculator to determine the Capacitor kVAr required to improve the power factor from cos 01 to cos 02 with your present kW load
      [Hits: 758 | Votes: 21 | Rate: 5.24]
    • Coil Inductance Calculator - Approximate Air Coil Inductance Calculator
      [Hits: 1130 | Votes: 7 | Rate: 3.57]
    • DesignWorks - Commercia, productive and easy-to-use electronic circuit schematic drawing tool Featuring full hierarchical design, standard and custom netlist formats, extensive symbol libraries, scripting and customization features and much more.
      [Hits: 2031 | Votes: 2 | Rate: 5.50]
    • DSPRX - Signalprocessing for SSB - Direct Conversion Receiver using Phasemethod for Sideband Supression, does all necessary signalprocessing for Direct conversion Receivers using IQ-mixer for demodulation.
      [Hits: 1240 | Votes: 0 | Rate: 0.00]
    • Electronics Toolkit - Solve electrical and electronics equations quickly and easily with the Electronics Toolkit
      [Hits: 7351 | Votes: 19 | Rate: 5.16]
    • Elise Software Corporation - Elise Software, OUTPUTMASTER, windows professional software for Printed circuit board, post processor, Gerbers, Drill files, ODB++, files generated fast and simply.
      [Hits: 229 | Votes: 0 | Rate: 0.00]
    • Elsie - Filter Design - Filter design software. Elsie is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.
      [Hits: 1820 | Votes: 3 | Rate: 10.00]
    • ERP Estimator - Calculate online, ERP in dB and dBi given PWR Frequency Coax lenght and type and antenna type
      [Hits: 1063 | Votes: 2 | Rate: 2.00]
    • ExpressPCB - Free PCB software is a snap to learn and use. For the first time, designing circuit boards is simple for the beginner and efficient for the professional.
      [Hits: 1657 | Votes: 4 | Rate: 5.75]
    • Finite difference program - This software is able to calculate the properties of odd shaped transmission lines. Particularly good in valve amplifier design, for aiding the design of transmission line resonators.
      [Hits: 717 | Votes: 3 | Rate: 7.00]
    • HamCalc v1.3 - By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculations. Attenuators. Audio Filter design.Coil Winding. Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps QRA Locator to Latitude/Longitude (and back) Radio Horizon calculator Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations
      [Hits: 12623 | Votes: 50 | Rate: 3.90]
    • Helical - A graphics-intensive bandpass filter program based on the helical resonator.
      [Hits: 1309 | Votes: 2 | Rate: 9.00]
    • HeliCoil - Inductance calculation for single layer, air-wounded coils and helixes up to about 800 MHz. Inductance calculations accuracy is around 1%. Also, coils with maximum Q for given inductance, resonant RF chokes, PI and T resistive attenuators calculations are provided. Skin effects, radiation losses and other minor side effects are not accounted in maksimum Q factor coils calculations. Program assumes using copper (Cu) enameled or silver (Ag) plated wire. Program is writen bilingual in English and Serbian by YU1AW
      [Hits: 1503 | Votes: 8 | Rate: 4.88]
    • IC-Prog Prototype Programmer - PIC Programmer software package that allows you to program all types of serial programmable Integrated Circuits using Windows 95/98/NT/2000/ME/XP
      [Hits: 718 | Votes: 4 | Rate: 6.00]
    • Inductor Design Software - RF toroid - A free too designed to assist in the selection of iron and alloy powder cores. RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.
      [Hits: 3454 | Votes: 21 | Rate: 4.82]
    • Integrated Engineering Software - Electromagnetic CAE simulation software for modeling and analysis. RF, Microwave & Antennas
      [Hits: 1031 | Votes: 1 | Rate: 10.00]
    • JavaScript Electronic Notebook, K7MEM - It consists of a group of JavaScript® driven web pages that are intended for use as a quick reference for Ham Radio operators or just anyone interested in electronics. Offer calculators for Resistors, capacitors, inductors, power supplies, filters, attenuators and antennas
      [Hits: 2067 | Votes: 12 | Rate: 8.24]
    • Labcenter Electronics - Professional electronics cad (schematic, simulation and pcb autorouting) software.
      [Hits: 1008 | Votes: 0 | Rate: 0.00]
    • LCF Calculator  updated - LCF online Calculator, calculate relation between Frequency Capacitance Inductance and Reactance
      [Hits: 1051 | Votes: 10 | Rate: 5.41]
    • linSmith - Smith chart utlity - A Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbars.
      [Hits: 767 | Votes: 1 | Rate: 10.00]
    • MatchNet - This program calculates impedance matching for tube and solid-state PA, LNA, antenna match-box, interstage impedance matching and all other impedance matching in electronic and telecommunication.
      [Hits: 865 | Votes: 6 | Rate: 4.83]
    • Meter - This meter scale drawing program is designed to have a computer do the hard work in making a precision scale for a d'Arsonval analog meter. The resulting scales will typically be nicer-looking than those found on many commercial meters.
      [Hits: 2655 | Votes: 4 | Rate: 7.75]
    • mini dB Calculator - dB-Calculation for the experimenting radio amateur.
      [Hits: 704 | Votes: 3 | Rate: 6.67]
    • Mini Ring Core Calculator - The easy way to calculate toroid cores.
      [Hits: 887 | Votes: 4 | Rate: 5.25]
    • NetCon - A netlist converter for moving schematic and PC board files from OrCAD/PADS to ExpressPCB format.
      [Hits: 118 | Votes: 1 | Rate: 4.00]
    • Networks - Calculate impedance matching networks by YU1AW
      [Hits: 690 | Votes: 2 | Rate: 10.00]
    • NFM - noise figure measurement  updated - NFM (for Noise Figure Meter) is a software application to assist Noise Figure measurement. NFM implements the method of Agilent application notes AN 57-1 and AN 57-2 for noise figure measurement, but with the addition of an adjustable attenuator after the noise source and between the DUT and instrument.
      [Hits: 160 | Votes: 4 | Rate: 7.75]
    • NL5 Circuit Simulator - Analog circuit simulator for Windows (not a SPICE). A great tool for students, amateurs, as well as for experienced engineers. Free Demo.
      [Hits: 1138 | Votes: 0 | Rate: 0.00]
    • Number One Systems - Professional ready-to-use PCB design product.
      [Hits: 428 | Votes: 1 | Rate: 1.00]
    • Panel and Dial - Freeware windows and linux tools to design front panels and dials labels for your home-brew projects.
      [Hits: 1715 | Votes: 10 | Rate: 1.90]
    • PExprt - Tool for magnetic component design and modeling. Design and modeling of magnetic components such as inductors, planar transformers and integrated magnetics used in power-electronics applications.
      [Hits: 260 | Votes: 3 | Rate: 4.33]
    • Quad - from Tonne Software - This graphics-intensive program designs and analyzes active quadrature ("90-degree") networks for use in SSB transmitters and receivers.
      [Hits: 492 | Votes: 1 | Rate: 10.00]
    • Qucs - Quite Universal Circuit Simulator Priority listing - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window. Run on Linux.
      [Hits: 804 | Votes: 1 | Rate: 9.00]
    • Resistor Finder - Resistor Finder is a program that allows the electronics designer or hobbyist to find a combination of 2 resistors that, when connected in parallel, will provide the best match to a desired resistance.
      [Hits: 787 | Votes: 3 | Rate: 1.00]
    • Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.
      [Hits: 1096 | Votes: 5 | Rate: 5.40]
    • RF Filters - MS DOS Program for calculations of HP, LP and BP filters at VHF and UHF frequencies up to about 800 MHz by YU1AW
      [Hits: 948 | Votes: 6 | Rate: 4.33]
    • Sunstone PCB Design Software - Sunstone.com PCB123 PCB download software. Review Sunstone quality pcb design software. Free PCB software download for all of your business needs.
      [Hits: 388 | Votes: 0 | Rate: 0.00]
    • SVC Filter - Filter design software. A program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values. SVCfilter is 32-bit Windows electrical filter design software nicely written to help the radio amateur, technician or engineer design and analyze lumped-element lowpass and highpass filters.
      [Hits: 852 | Votes: 1 | Rate: 10.00]
    • TANKIT Priority listing - A free design aid for vacuum tube linear RF power amplifiers. Determine plate circuit operating parameters and design pi or pi-L tanks quickly and easily.
      [Hits: 1390 | Votes: 1 | Rate: 10.00]
    • Target 3001 PCB Design - Represents a new generation of CAD/CAE software for circuit design. Has been created to meet the requirements of professional design engineers.
      [Hits: 702 | Votes: 1 | Rate: 2.00]
    • Toroid Pro - Designed by microwave engineers to provide filter, radio,microwave and Ham radio engineers with all relevant information of an inductor and core at his or her finger tips
      [Hits: 5151 | Votes: 10 | Rate: 3.20]
    • TubeCalc - Input (grid or cathode) and output (plate) tube resistances calculation according to its electrical characteristics, frequency, mechanical dimensions and working conditions.
      [Hits: 1244 | Votes: 4 | Rate: 4.25]
    • Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter
      [Hits: 3679 | Votes: 8 | Rate: 5.38]
    • Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.
      [Hits: 6595 | Votes: 11 | Rate: 2.64]
    • ViPEC Network Analyzer - This program intended for electronic circuit analysis (mainly for Linux). ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks.
      [Hits: 674 | Votes: 0 | Rate: 0.00]
    • WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.
      [Hits: 4249 | Votes: 11 | Rate: 5.45]
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