New (to me) Forney inverter welder

entertaining

I bought a 60% duty cycle 185 amp tig welder. I wish I bought a bigger one. :(

A MIG that does TIG!? Not so common for the prize tag.

Nick

I figured it would fit the sort of teensy work I'd need to TIG. But then, like getting a new hammer, everything in the shop would start looking like it needed TIG-ing, and I'd be sorry I got such a small machine.

Still... the thought of picking up a little 6lb job instead of my 100lb Lincoln has its attractions.

LLoyd

It is not hard to build a power source that would be either constant current and constant voltage at the same time, so if Forney did it, that would be great. Does it have gas valves etc?

I was not clear, I meant a device that could operate either in constant current or in constant voltage mode depending on setting.

Probably the same one that Harbor Freight sells.

Gunner

"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster

Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton

I didn't have time to actually look at the machine. I will next time in town.

No, Iggy... you cannot have both constant voltage and constant current simultaneously, unless you also maintain exactly the same arc length all the time -- a little hard for a handheld torch.

LLoyd

How much 3 phase do you have available? Ive a Hobart CyberTig 2, that Id give someone who wanted it. Capable of 600 amps

Gunner

"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster

Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton

Ok... I take my chide back. THAT you can do.

LLoyd

I think very highly of those CyberTigs.

Come get it. Its been sitting out side for a year now, hopefuly with a tarp still on it...and it needs to find a home. Its got the full programmer drawer in it too.

Gunner

"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster

Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton

Want to bet that Iggy *cant* kludge together a torch head that haz a servo to maintain a constant arc length? :-) Sounds like just the sort of little project he'd enjoy sketching plans for while recovering from the christmas dinner.

Man! I wish we lived closer. I've only got 200 amps of 3 phase, but I can get all I need. :)

Theres no reason an inverter should be less than 100% duty .

It runs cool, cause it dont store energy .

common welders store a tremendous energy

in the inducance between the primary and secondary .

laminated core helps greatly to store .

But its just 2 capacitors that store the energy in

an inverter . The amps goin in and out have a very

low ohms , so cant heat up .

They put such a small core in , that it heats up ....

They should just use a proper ferritte core and run

it the normal 150 khz .

I got PC power supplies , that have a 300 watt core , so small

you could 4 in ur hand ! They run cool .

It all just false economy .

And you are making electronics as a profession!?

Merry Christmas!

Nick

Input is only 100 amps. So you would be golden

On a cart. Needs a pedal..though thats easy enough

Road Trip!!!!

Gunner

Political Correctness

A doctrine fostered by a delusional, illogical liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.