Opened up a brand new 36V 500 watt brushed DC motor controller that just arrived to fix a loose wire and while re-soldering it I noticed that it had two 470uf 50V low esr polarized JWCO brand caps. Appear to my uneducated eye to be aluminum radial electrolytics (11mm by 25mm green tube) seems like the cap voltage is kinda low considering its a 36V unit and was thinking of replacing them with something bigger / better quality. Any advice on what type of cap / brand to use? The way the pcb is done I can only handle a 13mm diameter with 25-30 mm vertical. Seems like 680uf 63v @ 13mm x 25 - 30 mm is about the biggest ones I am finding that will physically fit the pcb and enclosure. Also the pcb has a place for a 3rd mosfet ( 2 existing ones marked SC 068R5NT EWOCKW on 3 lines). Is this enough improvement to warrant the cost of the caps and the mosfet? It is a $35 chinese controller and I probably got what I paid for (cold solder joint on a main power wire ). Heavily in its favor is it ha s the exact physical measurements I need for my project and difficult to change later and would hate to have to find a better quality more expensive unit and wait weeks for delivery. Trying to get this project done for Christmas present.
By the way I am not finding much luck finding / crossing this mosfet. Googling on "068R5NT" I get mosfets of various #s and when I include the "EWOCKW" that is printed below the number on the body all that comes back is links to stuffed Star Wars toy sites. I think they are "SC" brand? Any help / advice would be greatly appreciated. Dach. "Do what you can, with what you have, where you are" - Theodore Roosevelt -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20201213/7978b98d/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
