CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] UPDATE Re: eBay item. Description is not truthful---

Posted by Harvey White
on 2003-11-20 08:59:23 UTC
On Thu, 20 Nov 2003 06:20:28 -0600, you wrote:

<snip>

>Best regards
>Hans Wedemeyer
>PS This kind of crap distracts me and just delays my projects.... I want
>to finish the EAGLE layout for the L297/L298 and perhaps a 5 Amp driver...

I found it helpful to put a few LEDs in the circuit to enable me to
know how the circuit is doing, a bipolar red/green one across the
motor coil leads. I also found the chopper current sense to be fairly
sensitive to spikes, so I added some optional filtering in the current
feedback loop from the sense resistor to the op amp. Those were
useful as well. I also added some power led indicators where needed.
Barely fit on the 3 by 4 inch single sided layout I used, but did fit.

Harvey

Discussion Thread

Vince Negrete 2003-11-20 03:25:28 UTC Ignore it.. Was: eBay item. Description is not truthful (no author) 2003-11-20 04:48:13 UTC Re: [CAD_CAM_EDM_DRO] UPDATE Re: eBay item. Description is not truthful--- Harvey White 2003-11-20 08:59:23 UTC Re: [CAD_CAM_EDM_DRO] UPDATE Re: eBay item. Description is not truthful--- turbulatordude 2003-11-20 09:17:26 UTC re: comments on driver circuits Harvey White 2003-11-20 09:42:17 UTC Re: [CAD_CAM_EDM_DRO] re: comments on driver circuits Raymond Gage 2003-11-20 10:00:13 UTC Ball/Lead Screw mapping Kim Lux 2003-11-20 11:57:52 UTC Re: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Dan Mauch 2003-11-20 12:37:57 UTC RE: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Kim Lux 2003-11-20 13:05:09 UTC RE: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Jon Elson 2003-11-20 21:54:25 UTC Re: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Kim Lux 2003-11-21 06:17:32 UTC Re: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Ray Henry 2003-11-21 09:34:53 UTC Re: Re: Ball/Lead Screw mapping Jon Elson 2003-11-21 09:54:09 UTC Re: [CAD_CAM_EDM_DRO] Ball/Lead Screw mapping Jon Elson 2003-11-21 21:01:14 UTC Re: [CAD_CAM_EDM_DRO] Re: Re: Ball/Lead Screw mapping Raymond Gage 2003-11-22 10:34:41 UTC Re: [CAD_CAM_EDM_DRO] Re: Re: Ball/Lead Screw mapping Jon Elson 2003-11-22 17:17:40 UTC Re: [CAD_CAM_EDM_DRO] Re: Re: Ball/Lead Screw mapping Ray Henry 2003-11-22 21:29:36 UTC Re: Re: Re: Re: Ball/Lead Screw mapping