(02-23-2017, 09:33 PM)Rob F Wrote:(02-23-2017, 09:22 PM)jeremyh Wrote: I think niksunen is on the right track with the LDD-1500, the only number that doesn't seem to line up to me is the input voltage of the LDD at 6-30V (robo-tank outputs 5V) but I suppose Rob has mentioned he's able to up the V to 10 so that shouldn't be a problem.
Actually I think I can up the PWM signal voltage to 30 now. The IC on the converter is what actually converts that signal and since it can handle up to 32v it should put out 30v. Currently only 12v is going into it so it can only put out 10v, if I put 9v into it I only get about 7v out so I'm thinking if I put 19v in I'll get 17v out which should still be in that PWM signal. I'm going to solder up a board and test it out.
I am just wondering how much current that ic chips last ? Because if each chanels uses 15.5-19.5V DC @ 0.7A. and there is like 8 chanel light, it takes 8 x 0.7A = 5.6A
and those Meanwell ldd-1500 are kind of "big" and each of them last only 1.5A so i wondering if you tiny ic last those "big" currents, or if it fry :D
Because it is another thing to just use that pwm signal to "control" some other device which takes the "load" (then current is small about some mA, even voltage is bigger) than using those light directly that signal. And if doing it, your chip/ic must take that load and still running fine (and not get fryed ) :D
