> Thanks for the link, Frank. I wish I were better at > electronics, then I would know what this circuit does. It > looks like the op-amps only have a 10kOhm resistor on their > outputs, which would limit the current going in or out of the > amp. This may offer current protection but maybe not enough > voltage protection. I was thinking of putting a 12 volt Zener > between the op-amp output and the output ground, but I don't > know if that is a good idea or not. I suppose I could just > try it and see what happens. > > It looks like the above circuit takes in an analog input, > converts it to PWM or PDM, then back to analog on the far > side of the opto-isolator. I wonder how fast it is? A VFD > signal might not need to change quickly, but an analog axis > servo would.
I should have mentioned, I was a software guy, so you've just blinded me with you skills in the black art of analog electronics. > > > > I also got my ATtiny2313 programmer and proto-board working, but > > > blew both 2313 chips I had on hand the first day, with no > gratuitous > > > smoke either. I'm looking for a 2313 simulator that will run on > > > Ubuntu so I can test programs before I try to program real chips.) > > > > I only know of AVRStudio for windows, but I find that it's > simulation > > is pretty ordinary. I was simulating the 2313 a while back > and it was > > missing a timer. Maybe it was just a bad install. > > I don't have any Windows machines so I would have to set up > Wine to run AVRstudio, but it may be worth it, if I can save > some burnt chips. It's definitely worth it. I can pick up errors very quickly - registers not programmed correctly, interrupts not set up properly, and the problem I always seem to have, integer conversion between 8, 16 and 32 bit. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
