So far, the answers all seem to point to software packages with circuit simulation, which require having a model for every component, or the simulation doesn't work - unfortunately, the SPICE models that are required are scattered far and wide and very, very few of them are for vacuum tubes, meaning I'd have to create my own model data for components that, in most cases, haven't been made in thirty or forty years.įurther, I genuinely don't want to deal with the learning curve of a circuit simulation at this time. Ideally, it should be free and open source. It should do "object drawing", with no loss of resolution as a drawing is scaled larger or smaller. What I really need is software that's as easy to use as GeoDraw - including, if the symbols aren't included or downloadable, the ability to create symbols that can be pasted, rather than having to be drawn over and over. I know my way around GIMP to some extent, but it's a bitmap editor at heart it doesn't really handle objects. I'm noddingly familiar with Inkscape, but find it more complicated to use (in truth, I had trouble just drawing lines and circles last time I tried it). The current version, however, seems a little retro for a multi-core, multi-gigahertz, multi-gigabyte system. Twenty years ago, I'd have used GeoWorks Ensemble's GeoDraw - an object drawing tool that ran well on a 386 with 2-4 MB RAM. I specifically need to be able to include symbols for tubes with various numbers of grids and other internal parts (beam power elements, for instance), beyond the usual resistors, capacitors, coils, and so forth. In order to document my "as built" work, I need to be able to draw a circuit diagram, and in order for it to be neat enough to publish on the Web, I'd like to use my computer to do the drawing. This may go as far as getting an Amateur license. ![]() That's as in "Radio Rangers" - crystal sets, to start, then moving up to tubes, and likely staying at that era (I don't have any real interest in transistors). Logisim or CircuitVerse are probably the best options in general, but students have had success with others, which you might want to try out as well.I'm starting to learn radio. It is a quality commercial product with a free demo (time limited and doesn’t allow saving) and a subscription fee: ~$80 for a year of access (the $24/yr option is too limited to be very useful). It may try to sell you parts (as that is DigiKey’s primary line of business).ĬircuitLab - Another online schematic editor. I haven’t used it myself, but a student found it useful. SchemeIt - An online schematic editor provided by DigiKey, an online parts retailer. (CircuitVerse was recommended to me by a student who felt Logisim’s output was too ugly.) If you can’t import an SVG image into your word processor of choice, then use PNG with 4x resolution for the best-looking alternative. To export an image, use Tools > Render Image, and choose the SVG format (a vector format). It has very similar capabilities and similar limitations (no LEDs, resistors as needed for Lab 1). Again, please crop the image to avoid wasting space.ĬircuitVerse - A free online tool similar to Logisim in functionality. Tin圜AD - Use “File > Export as image file…” to get an image for your lab report. You can search for symbols by name as well. Go to “+ More Shapes…” in the bottom left of the interface, then enable the “Electrical” library (under “Other” at the bottom of the list of libraries). It doesn’t do any sort of circuit simulation, but it does have all of the needed symbols to place and connect electrical components in a circuit diagram. Note that Logisim does not have proper circuit diagram elements for LEDs or resistors, making it poorly suited to drawing circuits with those components. Crop the image to only include the circuit in your lab report and avoid wasting space. ![]() Use the “File > Export Image…” function to get an image you can use in your lab report. ![]() Logisim (Holy Cross Edition) - Installed in the CNS labs, this is a great tool for simulating, testing, and understanding digital logic circuits in addition to its fairly good schematic capture. These will do handy things like maintaining wire connections between parts as you move them and provide libraries of the common circuit elements for you to easily include. While you can draw a diagram in a lot of different applications, some are made specifically for schematic capture (drawing circuit diagrams).
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