Re: [CAD_CAM_EDM_DRO] Re: Current and the L298 & IRF530/IRF540

How many do you want? I've got several tubes full of them.

later,
Larry E.

----- Original Message -----
From: "Ross Overstreet" <ross-o@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, August 19, 2001 3:04 PM
Subject: RE: [CAD_CAM_EDM_DRO] Re: Current and the L298 & IRF530/IRF540


> Hi Guys,
> I'm having a hard time finding a source for L297's.
> Where do you guys buy these things?
>
> Dave - thanks for asking this one! I'm in the same
> boat and was searching the web for homebrew ~10A
> stepper driver circuits!
>
> Cheers,
> Ross-O
> http://users.better.org/roverstreet/
>
> -----Original Message-----
> From: daque@... [mailto:daque@...]
> Sent: Sunday, August 19, 2001 9:41 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Current and the L298 & IRF530/IRF540
>
>
> Thanks for the replies. Seems simple enough. I once used IRF530's in
> a 36vdc h bridege motor circuit. They were held to the heatsinks with
> plastic push rivets. You could find the blown one easy. It would melt
> the push rivet, the solder around its legs, and then slide down about
> a quarter inch.
>
> One thing for people new to MOSFETS, use a high enough voltage rated
> part. Inductive pulses were killing those 100v fets protected by a
> 68v znr. The problem was the peak clamping volatage of the znr was
> over 100v by a little. Live and learn. IRF540's were rock solid.
>
> Dave
>
>
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