- Thread starter fizzy
- Start date
AC at high frequencies is FAR louder/more annoying than pulsed DC at even higher frequencies. It's what ear plugs are for
Personally i don't find pulsed AC useful for anything much. Adjustable AC frequency is far more useful if the choice is that or more pulse features/the ability to pulse at higher frequencies.
With DCEN i find higher frequencies (over 100Hz) more useful than a slow on/off pulse most of the time... pulsing at low frequencies doesn't do much for arc stability but increases weld width as the arc tends to 'fan out' more. Crank the frequency up and the arc narrows and becomes stiffer. About the only time i use a slow pulse is for some autogenous stainless work and even then it's mostly because the customer wants the 'pretty stack of dimes'
The constantly changing light levels are more fatiguing than constant current or pulsing at higher frequencies than the eye can register
I could happily live without pulse, it doesn't let me do anything i couldn't do without it, it just makes some jobs a bit easier* and/or faster. If the choice was more pulse features or an extra 20 or 50 A output i'd take the latter every time
* need to be talking stuuuupidly thin stuff for that to be the case most of the time
Personally i don't find pulsed AC useful for anything much. Adjustable AC frequency is far more useful if the choice is that or more pulse features/the ability to pulse at higher frequencies.
With DCEN i find higher frequencies (over 100Hz) more useful than a slow on/off pulse most of the time... pulsing at low frequencies doesn't do much for arc stability but increases weld width as the arc tends to 'fan out' more. Crank the frequency up and the arc narrows and becomes stiffer. About the only time i use a slow pulse is for some autogenous stainless work and even then it's mostly because the customer wants the 'pretty stack of dimes'
The constantly changing light levels are more fatiguing than constant current or pulsing at higher frequencies than the eye can registerI could happily live without pulse, it doesn't let me do anything i couldn't do without it, it just makes some jobs a bit easier* and/or faster. If the choice was more pulse features or an extra 20 or 50 A output i'd take the latter every time
* need to be talking stuuuupidly thin stuff for that to be the case most of the time
