Re: DC Speed controller

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Blue" <jo001k1132@b...> wrote:

> Hi,
>
> Does anyone have a circuit diagram for a PWM speed control for a

perminant magnet DC motor of 2hp running at 110 volts? If so could you
send it to me off-list? I don't want to spend too much of the hard
earned on this as it is only going to be used to drive my milling
table until I get some Gecko's running.

>
> Regards,
>
> Terry

PWM speed controls are really for RPM and not finite movements like
step and direction.

But, for almost nothing, you can pick up a motorized treadmill and
scavenger both the motor and controller as well as a matching inductor.

Check out DART controls and review their manual. It may have a simple
SCR driver that uses a pot for control. you can use PWM instead of
the pot.

Dave