Re: CNC PLASMA - THC schematic ?

> Yes. I guess I need to move it over. While the basic voltage
> sensing circuit of the posted schematic remains the same we have

made

> several additions and modifications to the version that will be
> available from Bob Campbell. We have added a universal current
> sensor for the plasma side that works with any machine for the "Arc
> Good" signal. Jim at Sound Logic is doing the design and has added
> the buffers and isolation for the second parallel port that is
> usually need for the added inputs.

Wow,

The schematic looks good, I have an earlier verision that is similar
but with only 2 channels of comparitor. I think that was from when
the discussion first came up there.

I was looking at a simple DC motor instead of a stepper as the
control will be open loop for posistion, but closed loop on arc
voltage.

will any of the mods be available for the group ?


Dave