newplumber
Senior Member
Hi
I was curious if there is a better way to make a high current digital potentiometer
I search the forums but didn't show any luck
my schematic is just a thought and I didn't add caps etc... just basic
what i am trying to achieve is make a harbor freight 120V dc mig welder with way more control on
amps so I can weld thin metal ...its funny the welder gives you 2 switches high/low ... but for the price you can/can't go wrong
of course i know you all have way better ways but I'm trying to keep it simple
one thing that helped me control current for the welder is just attach a few more extension cords in a circle but
with my crazy thought is to control it with better adjustments with a picaxe
your miscalculated friend
mark
FWIW ...harbor freight welder = 98 dollars
newplumbers wrongfully high current potentiometer = $98,000.00
I was curious if there is a better way to make a high current digital potentiometer
I search the forums but didn't show any luck
my schematic is just a thought and I didn't add caps etc... just basic
what i am trying to achieve is make a harbor freight 120V dc mig welder with way more control on
amps so I can weld thin metal ...its funny the welder gives you 2 switches high/low ... but for the price you can/can't go wrong
of course i know you all have way better ways but I'm trying to keep it simple
one thing that helped me control current for the welder is just attach a few more extension cords in a circle but
with my crazy thought is to control it with better adjustments with a picaxe
your miscalculated friend
mark
FWIW ...harbor freight welder = 98 dollars
newplumbers wrongfully high current potentiometer = $98,000.00
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