Re: [CAD_CAM_EDM_DRO] Controlling +/- 10V Servo Amps

Michael Larson wrote:

>http://www.electrosales.com/warner/New%20Product/tdc.htm
>There are a couple of those brushless servo amps being sold on ebay.
>I'd buy them (and a compatible motor) but I have no idea how to get +/-
>10V out of a pc's parallel port. I'm pretty sold on the pico-systems
>pulse-width mainboard, and you can get step+direction straight off of
>parallel port pins- but how would either of those be interfaced to the
>+/- 10V standard?
>

That would be tough. That's why I also have the PPMC, an analog servo
interface for the parallel port. See
http://jelinux.pico-systems.com/PPMC.html
for more info. Unfortunately, due to its modular nature, it is a bit
more expensive
than the PWM and stepper controllers.

It actually would be possible to make a PWM to analog 10 V converter,
but the number
of people who would want such a thing would be limited.

>
>

Jon