Re: Power Supply Circuit

Drew,

A resistor is switched in to either rapidly (1/4 sec or so) discharge
the supply after AC power is turned off, or to load down the supply
when it is backdriven by a motor.

Mariss

--- In CAD_CAM_EDM_DRO@y..., Drew Rogge <drew@p...> wrote:
> Hi Mariss,
>
> Does this board replace the big resistor across the filter
> cap terminals?
>
> Drew
>
> mariss92705 wrote:
> >
> > Hi,
> >
> > I have drawn up a power supply circuit that will:
> >
> > (1) Dump the supply voltage very quickly when AC power is turned
off
> > (2) Dump "returned current" from steppers or servos
> > (3) Has a green LED "POWER ON" indicator
> > (4) Has a red LED "DUMP" indicator
> > (5) No relays. All electronic.
> >
> > I will breadboard the circuit and test it this weekend. I will
post
> > the diagram after that if anyone is interested.
> >
> > The circuit will fit on a PCB that can be mounted atop the main
> > filter capacitor via the two cap terminal screws.
> >
> > You keep your transformer, bridge rectifier and filter capacitor
as
> > is. This just sits on top of your capacitor and does its thing.
> >
> > Mariss
> >
>
> --
> Drew Rogge
> drew@p...