Ok. Ive seen someone on youtube, who rigged a standard cheap, secondhand, single phase 4 pole motor, to a small conveyor belt, with some kind of adjustable control knob, which adjusted conveyor belt speed to ridiculously slow speeds, but maintained enough torque to push conveyor belt with some resistance. Now i cant find link for the life of me, but I definitely remember seeing it.
Just wondering how this might be acheived at reasonable cost, and safely? Resistors would surely create so much heat as to potentially start a fire(?) VFDs not an option, as these are like $100 projects! Ditto not done through a gearbox and/or too many pulleys, or any other mechanical means. it was definitely acheived through electrical gubbinsry. Only wish I could remember where I saw it!
Im sure theres more than one method here; it occurs to me to think about how ceiling fans speed are adjusted, and applying this....anyone actually know how it is acheived though?
Thanks in advance
Just wondering how this might be acheived at reasonable cost, and safely? Resistors would surely create so much heat as to potentially start a fire(?) VFDs not an option, as these are like $100 projects! Ditto not done through a gearbox and/or too many pulleys, or any other mechanical means. it was definitely acheived through electrical gubbinsry. Only wish I could remember where I saw it!
Im sure theres more than one method here; it occurs to me to think about how ceiling fans speed are adjusted, and applying this....anyone actually know how it is acheived though?
Thanks in advance
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