Maker Pro
Maker Pro

Power supplies in parallel

C

Chris W

Jan 1, 1970
0
I found a great deal on some 12V 13A switching power supplies ($19).
While 13A is enough for most of what I want to do, I use a few things
that require more current. So I was considering getting 2 or 3 and
hooking them up in parallel. Will this cause any problems since one
will always be putting out a slightly higher voltage than the other no
mater how close you adjust them? Also, as an alternative, I was
thinking of maybe just putting a 22 Ah Sealed lead acid battery in
parallel to take up the slack the power supply couldn't. In this case
if I had 25A load would the power supply carry 13A and the battery carry
the rest?

--
Chris W

"They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety."
-- Benjamin Franklin, 1759 Historical Review of Pennsylvania
 
J

JeffM

Jan 1, 1970
0
I found a great deal on some 12V 13A switching power supplies ($19).
While 13A is enough for most of what I want to do, I use a few things
that require more current.
Chris W

Can you isolate portions of the load and supply them individually?
 
C

Chris W

Jan 1, 1970
0
JeffM said:
Can you isolate portions of the load and supply them individually?

No, I have a compressor that draws 16A continuous and 50A on startup. It
is normally hooked to a car battery but on occasion it would be nice to
run it from AC.


--
Chris W

"They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety."
-- Benjamin Franklin, 1759 Historical Review of Pennsylvania
 
M

Michael A. Terrell

Jan 1, 1970
0
Chris said:
No, I have a compressor that draws 16A continuous and 50A on startup. It
is normally hooked to a car battery but on occasion it would be nice to
run it from AC.

Then hook a 20 amp battery charger across the battery and run it that
way.
 
Top