In this viveo I show you how to make Homemade grinding machine for precise work. This sharpening machine will help you do precision work. I applied the motor from the washing machine. This high speed motor with speed regulation and stabilization.
Here are quality photos https://photos.app.goo.gl/8go6m16Zqi6h1QAA7
Never try to tell me it can't be done
When I have to paint I use http://kbs.justoldtrucks.com/
Nice, I love the simplicity of the circuit. It will start the motor from a shelf of around 60V and the feedback is not as precise as what would be achieved with an opamp but its simplicity is a plus, congratulations for your design.
I have a bunch of digitally controllable dimmers (10A 240V) so my idea was to control one of them with a couple of opamp and a comparator to pick up the feedback from the alternator (used as tachometer) usually found in washing machine motors or to pick up a simple encoder (just made with a hall sensor or a photocoupler and a cogwheel) for any universal motor that do not come with a pre-installed alternator/tachometer. This would be a very versatile circuit capable to provide good speed regulation. Since I can't find this kind of drivers on the market I thought it could be of interest for others because universal motors are ubiquitous and a cogwheel+hall sensor or a simple low resolution encoder disc are really easy to add and cheap.
Last edited by Claudio HG; 12-17-2019 at 04:35 AM.
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