[RE-wrenches] DC arc welder?

[conrad geyser]

Hi Tom,

 

Yes it works great.  PV is the perfect set up for welding - it doesn't
matter if you short it out.  The modules in the youtube are in parallel, not
series, and that is how I've done it.  We have a power trailer set up for
temporary power that works perfectly - it's 9: 195W Suntechs:
http://imageevent.com/cotuitsolar/1303publicalbum?p=40
<http://imageevent.com/cotuitsolar/1303publicalbum?p=40&n=1&m=-1&c=3&l=0&w=4
&s=0&z=3> &n=1&m=-1&c=3&l=0&w=4&s=0&z=3  It's about right for 3/32" stick
welding under optimum conditions if you're a decent enough welder.

 

Conrad

Cotuit Solar

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Tom DeBates
Sent: Saturday, November 23, 2013 8:50 AM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] DC arc welder?

 

Hello Wrenches,
   Recently, while working overseas, we were asked by a welder we employed
if we could make a "solar welder" for him. So, not wanting to dismiss his
request, my initial thought was to eliminate an inverter and welder for cost
and efficiency reasons and weld directly from a battery bank. I have done
some homework on this and it seems as though it may be feasible. There is a
YouTube video of a guy doing this with 3, 12 volt batteries in series. This
would be stick welding only and rod of ~ 3/32". There would be some details
to work through, but the biggest one seems to be a means to limit current to
the electrode. Has anyone attempted this and/or know of a means to limit the
current to the rod?
Thank you,

Tom DeBates

Habi-Tek
Geneva,IL. 60134

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