My 300uf start cap on my table saw motor (110v) blew today so I temporarily substituted a 220uf (400v) and 80uf polarized electrolytic in parallel which works but I am not sure why.
I am assuming the caps get charged every other cycle from the AC supply. They are only active for a fraction of a second to start the motor. Once it starts the centrifugal switch disconnects the cap.
I've used electrolytics in my rotary phase converter to start the 3 phase motor hundreds of times without issue so I am wondering why the conventional oil filled metal encased start capacitor is normally used.
I am assuming the caps get charged every other cycle from the AC supply. They are only active for a fraction of a second to start the motor. Once it starts the centrifugal switch disconnects the cap.
I've used electrolytics in my rotary phase converter to start the 3 phase motor hundreds of times without issue so I am wondering why the conventional oil filled metal encased start capacitor is normally used.