MIG of the future !

**kc7cc** · 12-23-2008, 01:23 PM

Into the future .

You will control "power" at the torch control (trigger) .

it will control wire speed .

Voltage will be dynmically tuned to arc .

Pull torch back to 1/4" and it extiguishes !

This is low cost , easy with modern transistor power

supplies .

BTW New to Plasma , im an E.E. , bought Harbor Fright
Plasma , 40 amp . Uses pilot arc , pulls zirconium away
from copper cup , when ground cable senses cutting current.

kc7cc Guadalajara MX

**junes** · 08-12-2009, 08:18 PM

How would the voltage be tuned to the arc this just doesnt make much sense sorry.

**torqueman** · 08-13-2009, 07:07 PM

How would the voltage know how to dynamically tune to the arc?

**Gadget** · 08-13-2009, 07:31 PM

Originally Posted by torqueman

How would the voltage know how to dynamically tune to the arc?

In CNC plasma with torch height control, the torch height is controlled by the voltage between the metal and torch. Perhaps he was thinking along these lines.
However, I don't know if it could be applied here successfully.

**torqueman** · 08-16-2009, 07:54 PM

Originally Posted by Gadget

In CNC plasma with torch height control, the torch height is controlled by the voltage between the metal and torch. Perhaps he was thinking along these lines.
However, I don't know if it could be applied here successfully.

I would have to think about this and break out some very rusty college electronics. However if it was possible I would think someone would be doing it by now.

**Gadget** · 08-16-2009, 07:59 PM

Originally Posted by torqueman

I would have to think about this and break out some very rusty college electronics. However if it was possible I would think someone would be doing it by now.

Torch Height Control isn't cheap. The low end units start around $400 and go up quickly from there.

**Gadget** · 08-16-2009, 08:23 PM

That is correct but I was just saying perhaps kc7cc had something like this in reverse (arc controlling voltage, not voltage controlling height) in mind with his statement below.
At this point it is all hypothethical.
"Voltage will be dynmically tuned to arc . "

**junes** · 08-16-2009, 08:55 PM

kc7cc do you honestly know how mig even works? You cant really screw with the voltage or arc length.

**torqueman** · 08-17-2009, 05:50 PM

It has been many years so please someone tell me if I understand this correctly. As the distance changes so would the resistance and amps. I would think the voltage would be the constant. The lower the resistance the higher the amps. The higher the amps the better the penetration. Please let me know if this logic is wrong.

**junes** · 08-18-2009, 08:31 AM

yes for the most part that is exactly right the voltage is constant since unless you have a cc/cv wire feeder you have to use cv so yes you got the basics.