Re: Power supply for Servos - Energy dump and such - UR...

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:

> Polaraligned wrote:
>
> >What is the advantage of using the more complicated circuit with
> >the LM393 as opposed to using the simple DPDT relay dump circuit

that

> >Mariss published before this?
> >
> >
> The relay only drains the power supply when the switch is manually
> turned off.
> The electronic circuit drains away excess energy in the capacitor

bank if

> it is being charged up by energy returned by the motors.
>
> Jon

I thought the electronic circuit also drains the cap when the AC
power if off.

Dave