![]() Spice 3 reads the default input source ( e.g. The program is being run on a terminal with mfb name term. It is not found then in the user's home directory. Spice and Nutmeg try to find the file in the current directory, and if Nutmeg only.ĭon't try to source the file ".spiceinit" upon startup. Nutmeg ĭon't try to load the default data file ("rawspice.raw") if no other files are given. See the appropriate documentation onĬommand Synopsis Spice Using X on a workstation, the DISPLAY variable should already be set if you want toĭisplay graphics on a system different from the one you are running Spice 3 or Nutmeg on,ĭISPLAY should be of the form " machine:0.0". Otherwise, a graphics-terminal independent interface (MFB) is used. ![]() Spice and Nutmeg use the X Window System for plotting if they find the environment variableĭISPLAY. Standard output, which may also be produced by Spice 3 with the "-b" command line option. Note that the raw output file is different from the data that Spice2 writes to the In nutmeg where this is not the case, Spice-only commands have been marked with an asterisk Most of the commands available in the interactive Spice 3 front end are available Interactive Spice 3 can plot data from a simulation on a graphics terminal or a workstationĭisplay. Write command in an interactive Spice 3 session. Nutmeg will read in the "raw" data output file created by Spice -r or with the Theįront-end may be run as a separate "stand-alone" program under the name Nutmeg. << My first prototype of the mini function generator is now officially done.Spice 3 consists of a simulator and a front-end for data analysis and plotting. It's a tight fit inside that Hammond 1593 project box from All Electronics, but it works. I like this box a lot and will probably order several more. It has a removable front panel, a sliding battery door to fit AAs or 9V batteries, and is sizeable enough to fit my various Radio Shack prototype PCBs. The BNC connectors come from one of the accursed Global Specialties 2002 function generators that I have been trying to get working. I gave up on that one and decided to part it out. My first attempt to install a slide switch on the top failed miserably. I cannot cut square, straight, correctly sized holes without better equipment and more patience. Everything was wrong with this attempt (the picture doesn't even begin to convey how bad it turned out). To cover the mess I made, I used a larger power switch that covers up the original holes. Then I figured why not dress the thing up with a brass insert.Ĭlearance for the switch and the BNC connectors is pretty tight and I had to saw out some unused parts of the PCB to get it to fit. The PCB is mounted with plastic standoffs from Radio Shack. The plastic standoffs are glued to the case with Sure Hold Plastic Surgery. ![]() ![]() Note that this isn't my idea, but rather came from this Sparkfun Tutorial. I swapped out the LM258N Op Amp for an LM1458CN which apparently has a faster slew rate as the trace is substantially cleaner than the one generated by the 258. So despite some challenges met with kludges, I'm fairly happy with the results. I haven't actually built anything in an enclosure in 15 years or more. And, sadly, while I'm no better at it now, at least I stuck my toe back in the water and I can jump in when it comes time to build an oscilloscope calibrator.
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