Re: [CAD_CAM_EDM_DRO] Request for Recommendation for Power Supply

Dan,
I have the same Sherline machines and driver board as you.
Sharing the electronics is very practical. I just don't have
the space to have duplicates. One laptop computer serves all.
The power supply is any transformer capable of 24 to 26 VAC
and 2 to 4 Amps. I use the Triad F204U, no longer made.
Surplus houses sometimes have good transformers and Radio Shack.com
have 900-5828 (4A) or 900-5830 (2A) units. I prefer good reserve so,
would go for the 4A unit.
Be sure to use adequate heat sinking and a fan in the PS and
on the L298 drivers. One box holds everything.
The rest is a heavy duty bridge rectifier and a computer grade
high value (25,000MF or more) 50V capacitor, fuses and power switch.
CNC Pro by <http://www.yeagerautomation.com/> is excellent for
the driver program.
RichD

dtbarber@... wrote:

>
> Yes, another newbie question. I am adding CNC capabilities to my
> Sherline Model 2000 mill. Mill hardware is Sherline motors and
> mounts. Steper control circuit is Dan Mauch's 3-axis, 2A driver
> board. Software has not been selected.
>
> I have completed assembly of the driver board, and now I need
> recommendations for an appropriate power supply. I am looking for
> something capable of powering both the mill and a future conversion
> of my Sherline lathe. To assist those who may respond, the Sherline
> motors are 3.2V, 2Amp. Also, I plan to mount a stepper to my rotary
> table and add Dan's 4-axis module.
>
> A secondary question concerning the lathe conversion is, is it
> practical to use the same driver for both the mill and the lathe, or
> should both machines have their own driver circuits and share the
> same power supply? The two machines would not be operated at the same
> time, but I prefer simplicity over trying to save the cost of the
> driver circuit.
>
> Finally, recommendations on software would be appreciated. I already
> own TurboCad Ver. 6 and based on recommendations from users on the
> Sherline list I am leaning heavily towards purchasing CNCPro.
>
> TIA
>
> Dan