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Powering multiple (7) RGB LED amplifiers
lilshawn:
that's sort of what those amps do. you feed in a signal from an led controller, and it basically reads the signal and it re-iterates the "signal" to additional lights.
really all you are doing is turning off and on a switch to ground for each of the 3 colors.
you would normally use these on something like an RGB led string going around the roof line of a building... one controller could certainly not do 500 meters of LED string, so you put the maximum amount the controller can handle (say, it's 60 meters) you then take the end of the string, and feed it into one of these amps to the input with it's own power supply. you continue the string on the output of the amp for another 100 meters or whatever your amp and power supply is rated for.... and so on into the next...the next... until you reach the end.
by the sounds of what you are doing... personally i would have just built a circuit using something like P40NF10L or IRL540N mosfets and just controlled the gates with the LEDwiz.
the P40NF10L will handle up to 100 volts and 40 amps continuous and the IRL540N will do like 36 amps.
if you open up one of your amps, you'll see 3 fets being used to drive the outputs.
thatpurplestuff:
Thanks for this detailed info lilshawn, I never would have even thought about doing it like that! If you don't mind I might copy some of your post into my build thread to provide any future builders with information to avoid a huge cluster of amps haha. I've had these RGB amps for too long to return so I'm just going to make it work with these, but your circuit idea definitely seems like the better more elegant solution!