I am making an electro etching machine to etch flat steel surfaces.
It will out put AC or DC
It is powered by a
25.2VAC, 2 amp transformer AC output to
Full bridge rectifier (400V - 8Amp) DC output
DPDT switch to choose output
What size rheostat will I need to vary the current/voltage down to 12V, or less?
Also will the rheostat work on both the AC and DC.
I choose a rheostat because that seems to be what the commercial units use.
This unit will see very limited use, may be one per week.
I know very little about the mathmatics.
Thank You for you help.
It will out put AC or DC
It is powered by a
25.2VAC, 2 amp transformer AC output to
Full bridge rectifier (400V - 8Amp) DC output
DPDT switch to choose output
What size rheostat will I need to vary the current/voltage down to 12V, or less?
Also will the rheostat work on both the AC and DC.
I choose a rheostat because that seems to be what the commercial units use.
This unit will see very limited use, may be one per week.
I know very little about the mathmatics.
Thank You for you help.