Paralleling Power Supply Units Made Easy ???
I am considering paralleling a couple of 20a variable adjustable psu's for 40a charging. According to what I have read on the world wide inter-web, it can be done quite easily, provided the following ...
Forum Discussion
Thanks , Mex.
"the units have to be connected to an IDENTICAL LOAD"
"The ripple has to be snubbed as best as possible"
So this idea of expecting the v.d., thru the wiring example given in my initial post, to balance out any small discrepancies, just doesn't cut the cheese?
My concern is, I just don't wanna go to any great lengths to eliminate even the tiniest of discrepancies, if it's not really going to make any significant difference in the overall performance / lifespan of either of the two psu's, or the overall effectiveness of the charge cycle. And quite frankly, I do not possess the know how to accomplish such a task, anyway. Clearly I have no experience with such matters, but when I read BFL's reports on the use of various chargers, set at as much as 0.2 volts apart, with higher v.d.'s, without any real problems, I can't help but think 100% precision is not required to accomplish my particular goal.
I look forward to seeing your results, but I can't help but wonder if the need for extreme accuracy only comes into play when involving several psu's, as opposed to only two? And is there more need for concern using the cheapowatts, compared to the units I'm considering paralleling? (Clearly, I have no real control over line input, but these particular psu's can be adjusted one digit at a time, to the second decimal point, so apparently with fairly precise accuracy.)
Thanks.
"the units have to be connected to an IDENTICAL LOAD"
"The ripple has to be snubbed as best as possible"
So this idea of expecting the v.d., thru the wiring example given in my initial post, to balance out any small discrepancies, just doesn't cut the cheese?
My concern is, I just don't wanna go to any great lengths to eliminate even the tiniest of discrepancies, if it's not really going to make any significant difference in the overall performance / lifespan of either of the two psu's, or the overall effectiveness of the charge cycle. And quite frankly, I do not possess the know how to accomplish such a task, anyway. Clearly I have no experience with such matters, but when I read BFL's reports on the use of various chargers, set at as much as 0.2 volts apart, with higher v.d.'s, without any real problems, I can't help but think 100% precision is not required to accomplish my particular goal.
I look forward to seeing your results, but I can't help but wonder if the need for extreme accuracy only comes into play when involving several psu's, as opposed to only two? And is there more need for concern using the cheapowatts, compared to the units I'm considering paralleling? (Clearly, I have no real control over line input, but these particular psu's can be adjusted one digit at a time, to the second decimal point, so apparently with fairly precise accuracy.)
Thanks.
