Well, I think that's only relevant if it's in the chain being considered. If you have 10 amp each on the first three and the last one is only 2 amps, your 48v would be limited to 2 amps, but the others would be fine at 10 amps. Well, total through that particular PSU.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ----- Original Message ----- From: "Chuck McCown" <[email protected]> To: [email protected] Sent: Saturday, March 14, 2015 2:29:09 PM Subject: Re: [AFMUG] Power supplies in series No, like Mark said, you are limited by the current of the lowest current power supply. This is a case were you would want to ignore wattage. If one of the power supplies can only make 2 amps, that is the total limit of the sum of all the currents. From: TJ Trout Sent: Saturday, March 14, 2015 1:26 PM To: [email protected] Subject: Re: [AFMUG] Power supplies in series So I should be able to connect 12 24 36 and 48 devices to the string as long as the sum of my wattage doesn't exceed the psu total wattage On Mar 14, 2015 12:09 PM, "Mark Radabaugh" < [email protected] > wrote: On 3/14/15 2:50 PM, TJ Trout wrote: <blockquote> I have 4 12v power supplies with isolated outputs that I plan to put in series to make 48v but I was wondering is it possible to still connect to only one or two while they are all in series to be able to draw 12, 24, and 48v? Or once they are on series you can't use anything but the total output ? If they are in series the available current is the current rating of the smallest power supply. If all of these are the same and can put out 2 amps each than the total string is capable of 2 Amps. If you asking if you can pull off different voltages along the chain, say some +12, some +24, maybe +36 and +48 the answer is yes - but the current limit is 2 Amps for everything combined. Mark -- Mark Radabaugh Amplex [email protected] 419.837.5015 x 1021 </blockquote>
