Hello everyone! This is my first post on eSk8 though ive been reading stuff on here for a while now. A couple months ago I wanted a new switch for my board other than my crap-a-tronic fuse switch that was falling apart. So I looked some up and saw a couple very similar devices online from Alien Drive, DIY Boards and a couple other sellers. They were all around $60 and I didn’t want to spend that much so I decided to build my own. I looked around a bit online and asked some questions on some forums and got some answers eventually. Currently the switch is built around a IRLB3034 N-Channel MOSFET which is an amazing fet because of its extremely low RDS of only 1.7m Ohm, which in turn makes it extremely efficient and cool running. I tested the switch on my board which draws around 8-10 Amps cruising normally and ~15 Amps going pretty fast. At any of these speeds the mosfet didnt even get warm, and I was testing this on a 90f degree day. The 3034 fet is great and super cheap, but the problem is it has a max voltage of 40V which will only work with 8S lipos at the most, though dont fret because I found a higher voltage mosfet! The IRFB7530 is another great fet with a rds of only 1.65mOhms and has a max voltage of 60V which means it can work with upto 12S LiPos. Anyways enough with the specs, I am going to upload the schematic for anyone who wants to build there own, but for people who dont want to build one themselves, I would be happy to make and sell them. The circuit would have its own custom PCB and ports for the switch to turn the fet on and off as well as XT60 connectors for power. If anyone is interested in buying one or getting some more info on it im more than happy to help! The couple of pics of the actual circuit was the very first version I made and if I were to do it again it would look far better.
DOWNLOAD FOR ALL SCHEMATICS AND BOARD FILES HERE
HERE is where I purchased the IRLB3034 MOSFET’s. The rest of the components you should be able to source your self. I bought everything else on eBay FYI
IRFB7530 on Mouser.
Prices: IRFB7530 ~40A Single FET Switch ~$25 IRFB7530 ~80A Dual FET Switch ~$35 IRFB7530-7P ~100A Dual FET Switch ~$40 IRFB7530-7P ~50A Single FET Switch ~$30 FYI I custom make every PCB so if you need it to fit a certain size requirement just ask and ill try to accommodate it to your needs.
NEW VERSION WITH IRFB7530:
Tags: Electric Skateboard Switch, MOSFET Switch, Electric Longboard Switch