Electronics

kmorin · Joined: 11 Nov 2006 Posts: 4 Location: Kenai Alaska

I have a Lincoln 300 TIG power supply that uses an external pot to establish remote welding power. Regardless of winding range switch setting the external circuit causes response from nominal '0' or low value to the '100%' or high value for that range.

I'd like to find a circuit (actual assembled device) that will allow this circuit to be timed for high and low states. I'd like to be able to set the resistance of the external control circuit in these two states.

I'd like to adjust the frequency of the main oscillation, the time high and time low and the % of the external resistance in each state by a series of switches and knobs but I don't need any readouts for values.

Of course, I'd very much like to establish a commercial relationship with a qualified trading partner, and to trade US dollars for the working device resulting from the design.

Any entrepreneurially inclined members of this board who would like to help me "convert" a Lincoln 300/300 into a Hobart CyberTIG are welcomed.

Kevin Morin
iisco@acsalaska.

neon · Joined: 25 Feb 2006 Posts: 593

I am not familiar with a lincon power supply and i think you will not get help unless someones has one. can you supply a schematic diagram so we can help?

kmorin · Joined: 11 Nov 2006 Posts: 4 Location: Kenai Alaska

neon,

thanks for the suggestion, I'm looking for copies of a schematic or service manual so I can reproduce the control circuits' schematic.

This isn't a currently supported Lincoln welder so this may take a few days- then I'll try to post or attach a schematic

Thanks for your guidance.

Kevin Morin
iisco@acsalaska.net

kmorin · Joined: 11 Nov 2006 Posts: 4 Location: Kenai Alaska

neon,

I have a schematic or two for the machine but don't see how to attach them here.

Other boards have that feature as a Reply Window control, not sure where to post *.tif images of schematics. I'd email them to anyone that is interested.

Cheers,

Kevin Morin
iisco@acsalaska.net

neon · Joined: 25 Feb 2006 Posts: 593

if you have a scanner or use a scanner then try to get a xxx.jpg file i think this board will accept it i don't know i never attach anything to this board yet. use e-mail and attach.

kmorin · Joined: 11 Nov 2006 Posts: 4 Location: Kenai Alaska

neon,

Would send in email directly but you don't have email listed, in profile. Attachment Controls in this Reply Window are not activated for my user name- or maybe not for this topic/thread?

Kevin Morin
iisco@acsalaska.net

neon · Joined: 25 Feb 2006 Posts: 593

renato_italo@msn.com needs to be in xxx.jpg format to attach and send it a scanner will set it in the proper format of xxx.jpg and send it

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