Added: 4 years ago
From: Jetijs
Views: 8,422
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  • If your transistors are overheating, they are probably not fully switching on which means they need more drive current (assuming they are standard bipolar resistors)

  • very good building there.

  • Thank you :)

    This motor will run, it is only a matter of time. We just need to fix the small bugs.

    Thanks

  • Even though it may not work, it looks like you spent alot of man hours on it and will probly learn i great deal from your mistakes,

    keep it up great looking motor, 5star for the effort.

  • Also you might wanna try using some smaller transistors to boost signal to your power/driver transistors if your using an optic/hall effect sensor. I think your problem lies more so in your timing. I haven't had a problem triggering anything with a optic/hall effect trigger..

    ALSO, I almost forgot.. Try a small pull-down resistor on the output of your pickups if you haven't already tried it. That'll stop the transistors from slightly powering your coils while not triggered.

  • sounds/looks like your timing is not optimized yet.. Looks like you have a very long duration, hence creating noise when the rotor passes peak "pull" from the magnet and slowing the rotor down and/or pulling the rotor backwards from the timing being too "advanced". Try a shorter duration like 30-40 degrees or so. which will limit this effect and lower power consumption. Very nice setup! I'm going to have to start spending a little more money on my project.. =D

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