RE: [CAD_CAM_EDM_DRO] Home built controller vs. bought controller

Hi,

I have a number of blank PCBs available that are based on the 297/298
chipset.

I have some space left over on a standard PCB panel that I get the Turbotaig
board made on. The design is basically the standard circuit as per the ST
application note.

I have 3 of the blank boards available. Around US$8.00 each if anyone is
interested. email me at peter.homann@...

Cheers,


Peter Homann
mailto:Peter.Homann@...
Adacel Technologies Limited,
250 Bay St, BRIGHTON, 3186, AUSTRALIA
http://www.adacel.com <http://www.adacel.com>
Telephone +61 (3) 8530 7777, Facsimile +61 (3) 9596 2960
Mobile 0421-601 665

> -----Original Message-----
> From: Harvey White [mailto:madyn@...]
> Sent: Monday, 27 October 2003 2:31 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Home built controller vs. bought
> controller
>
>
> On Sun, 26 Oct 2003 11:10:29 -0000, you wrote:
>
> >I'm looking into controllers and was wondering:
> >
> >1. If you built your own, where did you get the source documentation
> >(ie, schematics)?
>
> Allegro, who makes the chip (297/298).
>
> >
> >2. If you bought yours, where did you buy it from?
>
> didn't.
> >
> >3. Things you wish you knew then that you know now about controllers.
> >
>
> subharmonic lockon of the chopper circuitry and the necessity of
> being able to add a filter to remove current spikes. (Happened, and
> is now in the next generation of boards).
>
> Plus a few things about how Eagle Cad makes boards.
>
> Harvey
>
> >
> >Thanks,
> >
> >Matt S.
> >
> >
> >
> >
>
>
>
>
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