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[DPRG] Help finding parts for Barry's CNC Stepper controller.

Subject: [DPRG] Help finding parts for Barry's CNC Stepper controller.
From: rten at new.metronet.com rten at new.metronet.com
Date: Sat Aug 9 10:03:01 CDT 2003

Fuses at these current levels would most likely be found as automotive
parts, and are dual-blade "U" shape. Easy to find at automotive supply
houses. I don't kno about the fuse holders for them.
Ralph

On Fri, 8 Aug 2003, Dale Wheat wrote:

> "Fuses"?  Tell me more of these "fuses" you speak of...   ;)
>
> Thanks,
>
> Dale Wheat
> http://dalewheat.com
> (972) 486-1317
> (800) 330-1915, access code 00
>
> ----- Original Message -----
> From: "Ed Okerson" <eokerson at texasconnect.net>
> To: "Earl Bollinger" <earlwbollinger at comcast.net>
> Cc: "'Kipton Moravec'" <kip at kdream.com>; "'DPRG List'" <dprglist at dprg.org>
> Sent: Friday, August 08, 2003 10:21 PM
> Subject: RE: [DPRG] Help finding parts for Barry's CNC Stepper controller.
>
>
> > I don't think I would have used a milspec part.  When I replaced some
> > power transistors, I got the replacements at Frys, so those were probably
> > NTE parts.  I didn't keep spares for those boards, just bought them as
> > needed, but as I recall they were $16-$17 each.  Ed Koeffman helped with
> > those as well.  What is causing these boards to blow so often?  Maybe it
> > is time to design/buy a more suitable replacement for them that can
> > handle the load, or at least put in some fuses. :)
> >
> > Ed Okerson
> >
> > On Fri, 8 Aug 2003, Earl Bollinger wrote:
> >
> > >
> > > It probably won't help you any but...
> > > BD684 is a military spec transistor, here's the data that I found for
> > > it.
> > > http://www.americanmicrosemi.com/products/specs/BD684.phtml
> > > It looks like it is a PNP Darlington. I think some of the common
> > > TIPseries darlingtons might work. Maybe Oekerson had substituted it
> > > (TIPxxx) out a while back maybe.
> > > Maybe a TIP34D looks like the same thing, or a TIP107, it comes close,
> > > or something like a TIP117, etc.
> > > Fairchild does seem to make some BDxxx transitors
> > > http://www.fairchildsemi.com/collateral/PowerTRSG.pdf
> > >
> > > The NTE http://www.nteinc.com/specs/2300to2399/pdf/nte2349.pdf has both
> > > NPN and PNP complimentary darlingtons. 120v at 50a though, it might be
> > > too heavy duty. It does look to be the right case package though.
> > > Usually NTE is expensive.
> > >
> > > Did you check with Tanner's yet? He's probably got a box full on the
> > > shelf there.
> > >
> > > I remember they used to bring in the motor controllers pretty often
> > > maybe a 100 or so would be a good idea.
> > > Did Ed Oekerson leave a box of them behind when he moved?
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: dprglist-admin at dprg.org [mailto:dprglist-admin at dprg.org] On Behalf
> > > Of Kipton Moravec
> > > Sent: Thursday, August 07, 2003 10:27 PM
> > > To: DPRG List
> > > Subject: [DPRG] Help finding parts for Barry's CNC Stepper controller.
> > >
> > > Barry has two stepper motor controllers that he gave me to fix for his
> > > CNC
> > > (that we DPRG members can use on Thursday RBNO),  I think I found a few
> > > bad
> > > parts.
> > >
> > > Qty Part Number Cost Each Where
> > > 1 1N3891-ND $4.30 Digi-key
> > > 1 BD684 ?? ??
> > > 1 511-2N5192 $0.52 Mouser
> > > 1 291-22 $0.07 Mouser
> > > 1 2N6341 $6.19 ??
> > >
> > > The BD684 and 2N6341 are giving me problems finding a source for.
> > >
> > > Avnet has the 2N6341 for $3.74 each with a minimum order of 100
> > > pieces...
> > > It has a cross with NTE327 which costs $19.50 each at Mouser <Yikes>
> > >
> > > Can anyone else come up with a source for a couple?  The CNC is down
> > > until
> > > this is fixed.
> > >
> > > Kip
> > >
> > > _______________________________________________
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> > >
> > >
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> >
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>
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