It's neat, but doesn't that defeat the purpose of a stepper motor?
If you've got a 200 ppr stepper and just need a 72 RPM motor, it seems like a pretty simple way to get it. Moreover, from a pedagogical standpoint, it makes a great applied lesson in capacitance and inductance.
I remember about twenty years ago, we had a bad storm. And one of those transformers that are on the side of a power pole came crashing down when the pole snapped. The transformer lost it's lid, and there was a big oil puddle in the road. Nobody called the EPA, the power company just cleaned up the debris. And replaced the pole and transformer. Wonder if that is the norm, could be an environmental disaster some day with our ground water.
Comments
I'm not sure about using an electrolytic cap in a pure AC circuit, though, since it's polarized. I suspect that it would not last very long.
-Phil
-Phil
Yeah, I wondered about that too. Caps blow pretty easily with reverse DC voltage applied.
Finest use of pedagogical in ages!
-Phil
Exactly, and that should essentially make a non polarized cap. I use that trick in old radio restorations.
Nice trick! Much better than this trick filed under "fake Chinese capacitors".
-Phil
Yeah, I just couldn't stand to have new caps showing, at least on top. Although I may well re-stuff all the paper caps under the chassis too.
These are just electolytics, no oil. One does have to be careful with the oil bath types. Luckily the oil bath types are often still good.
Yikes! https://www3.epa.gov/region9/pcbs/faq.html
I remember about twenty years ago, we had a bad storm. And one of those transformers that are on the side of a power pole came crashing down when the pole snapped. The transformer lost it's lid, and there was a big oil puddle in the road. Nobody called the EPA, the power company just cleaned up the debris. And replaced the pole and transformer. Wonder if that is the norm, could be an environmental disaster some day with our ground water.