A
amdx
- Jan 1, 1970
- 0
I learned something interesting today, that is probably common knowledge to
most welders. I have a friend that welds, mostly on marine equipment. He
came to me wanting a switch installed on his tig torch to help him tig some
anodized aluminum. He has an HF251-D1 high frequncy unit and a Trailblazer
302.
I found a schematic for the High frequency unit, but was a bit perplexed as
I couldn't locate any semi conductors that I thought would be used to
generate a high frequency. Well, later in this process I found
out that the thing operates like a tesla coil with a spark gap to create the
high frequency.
Now, in order to figure this thing out I wanted to see it operate, So the
welder went on to show me and
it would not work. He could not get any high frequency arc. He said it
worked fine last night, Ok, "so what did you change"? He had added about 70
feet of cable, OK, so let's take that cable out. So now the HF works fine,
It turns out the cable was wound up making an inductor that would not allow
the HF to operate properly. Once the cable was straighted out it worked
fine.
So.. the HF unit uses a spark gap to create HF and you can't coil the wire
and use an HF unit.
I thought it was interesting.
Mikek
most welders. I have a friend that welds, mostly on marine equipment. He
came to me wanting a switch installed on his tig torch to help him tig some
anodized aluminum. He has an HF251-D1 high frequncy unit and a Trailblazer
302.
I found a schematic for the High frequency unit, but was a bit perplexed as
I couldn't locate any semi conductors that I thought would be used to
generate a high frequency. Well, later in this process I found
out that the thing operates like a tesla coil with a spark gap to create the
high frequency.
Now, in order to figure this thing out I wanted to see it operate, So the
welder went on to show me and
it would not work. He could not get any high frequency arc. He said it
worked fine last night, Ok, "so what did you change"? He had added about 70
feet of cable, OK, so let's take that cable out. So now the HF works fine,
It turns out the cable was wound up making an inductor that would not allow
the HF to operate properly. Once the cable was straighted out it worked
fine.
So.. the HF unit uses a spark gap to create HF and you can't coil the wire
and use an HF unit.
I thought it was interesting.
Mikek