Im making a giant scoreboard for my local rugby club. I'm using LED strips as 7-segment displays, they are drawing 300ma under 12v per segment. I have 4 numbers so total power usage is (300 x 7) x 4 = 8,4 A
I'm using a IC for the 7 segement portion, the CD4543. according to the datasheet i can control it with 4 outputs. My question is, as the IC cant handle the current for the display, how can i use a mosfet to handle the extra power? I've bought a bunch of IRF830 mosfets, but i think they are too much for the job. They are rated for 500V.
Please some advice on the mosfet part (and maybe the IC-> arduino part.
As thanks i'm making an instructable in the process, for the community :)