free dc motors and ac controllers

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danbob
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Joined: Sun Jan 07, 2007 8:47 pm
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free dc motors and ac controllers

Post by danbob » Mon Jan 08, 2007 4:12 pm

Tread mills have motors and controllers and there are usually at least 1 a month on craigslist for free. The only problem with them is that the controller is set up so you have to turn the speed control to 0 for it to start and there is a 1.5 second delay before the motor starts. I fixed having to 0 the speed control be increasing the size of cap #32 that goes from the inverting input A on the lm358 to ground but for the life of me I cant get rid of the 1.5 second delay. any help would be appreciated. all of the controllers so far have been ATR manufacturing model mc- 45 or 40/50 but they all look the same. I have one set up on my drill press and it works great but the 1.5 second delay is a pain in the posterior.
http://www.villagephotos.com/pubbrowse. ... id=1617409

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