Paralleling Astron Supplies
 

What do I need to do to paralled two 35's for use with a small solid state
homebuilt amp? Thanks Murray K5MDM Please email direct to

Murray neece wrote:
What do I need to do to paralled two 35's for use with a small solid state
homebuilt amp? Thanks Murray K5MDM Please email direct to




You need to find a way to make them share the load. If you just hook
'em up, it's likely that one will be in current limit at a current that
exceeds the long-term capability of the supply, while the other one
will be loafing...at least until the first one burns up. If it burns
up shorted, poof goes your amp. YMMV.
mike

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mike wrote:

Murray neece wrote:

What do I need to do to paralled two 35's for use with a small solid
state


You need to find a way to make them share the load. If you just hook
'em up, it's likely that one will be in current limit at a current that
exceeds the long-term capability of the supply, while the other one
will be loafing...at least until the first one burns up. If it burns
up shorted, poof goes your amp. YMMV.
mike


What?

Look, you can parallel them and they will work just fine, BUT!
You will have to isolate the positive terminal on each of them
with a high current diode. If you don't you will blow out the
723 IC on the circuit board inside the Astron.

Another way is to make sure that both supplies are turned on
before you hook them up to each other.

You're not going to damage anything else but it's a
hassle to replace that IC if it is soldered in. I put a socket
in mine. I found this out also when I needed to charge my car
battery. Don't hook it up to the battery unless the Astron
is already switched on.

I have done this with a solid state amp and it works
fine.

Murray, I think you would be better off to get yourself a deep cycle
lead acid battery, or gel-cell battery, and then float it off a
charger.

R. Makul wrote:
Murray, I think you would be better off to get yourself a deep cycle
lead acid battery, or gel-cell battery, and then float it off a
charger.

Yeah, that's just what I want, a lead acid battery in my house.

Murry is not too bright. He might try it.



On Sun, 18 Apr 2004 09:25:05 -0400, R. Makul wrote:

Murray, I think you would be better off to get yourself a deep cycle
lead acid battery, or gel-cell battery, and then float it off a
charger.