I've seen a number of products, schematics, and discussions about this, and I'm rather unclear where to start. I've seen this thread but I have no idea what a PWM is even after looking it up:
http://forum.allaboutcircuits.com/threads/simple-dc-motor-ramp-up-circuit.112540/
I just bought one of these. It's not here, yet, but another source claims it's 12V, 0.25A:
http://www.ebay.com/itm/281485837958?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
What I'd like to do is ramp the voltage when switched on from 0-12V in about a minute (precision isn't key, here). If it's possible to make it variable and take several minutes (<5) to ramp up, that would be great. I've seen some pre-built circuits and controller boards that look like they'd do what I want (yay, cause I suck at building circuits!) The problem I have is that they all use pretty bulky parts or are really complex. I don't mean to be crude, but certain, uh, "adult" products definitely have settings that pulse, ramp up and down, etc, and they're certainly not stuffed with capacitors. Is there any off-the-shelf board or a combination of a few simple parts that would do this? How come those other... "products" manage to work without tons of circuitry?
http://forum.allaboutcircuits.com/threads/simple-dc-motor-ramp-up-circuit.112540/
I just bought one of these. It's not here, yet, but another source claims it's 12V, 0.25A:
http://www.ebay.com/itm/281485837958?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
What I'd like to do is ramp the voltage when switched on from 0-12V in about a minute (precision isn't key, here). If it's possible to make it variable and take several minutes (<5) to ramp up, that would be great. I've seen some pre-built circuits and controller boards that look like they'd do what I want (yay, cause I suck at building circuits!) The problem I have is that they all use pretty bulky parts or are really complex. I don't mean to be crude, but certain, uh, "adult" products definitely have settings that pulse, ramp up and down, etc, and they're certainly not stuffed with capacitors. Is there any off-the-shelf board or a combination of a few simple parts that would do this? How come those other... "products" manage to work without tons of circuitry?