Was Chip carrier now sockets

[Steven Ciciora]

Hmm, with out measuring my 7747, I had some spare in^2 on some PCBs I was
having made, so I made some 0.6" to 0.4" and 0.5" adaptors.  As you know,
my 7747s don't need them :-)  As long as I was doing it, I put a pad for a
1206 surface mount deglitching cap and a power LED (to warn you not to
pull the chip w/ led on).  Now I see that the real dimension is 0.475.
Well, I'll have 24 of these boards show up tomorrow, and I won't need any.
Could you use some?  I even bought some MilMax type spacers to go from the
origional socket holes to the adaptor.  I'll have some space on another
PCB this week, so I might make some more of the correct spacing.    Since
I don't need them, I guess I'll offer the rese to the list.

- Steven Ciciora

On Thu, 3 Aug 2000, Ludis Langens wrote:

> steve ravet wrote:
> > 
> > Maybe someone could design a little board with rows of single header
> > pins at 0.4" or whatever to plug into the ECM, and .6" holes for a ZIF
> > or other socket.  Would be much cheaper than buying little plastic
> > things.
> 
> I measured the spacing in my '7748:  0.475".
> 
> I also checked several C3's with 24 pin EPROMs.  They were all the
> standard 0.6".  Hmmm.  The 24 pin and 28 pin R&N chip holders look
> identical (except for the number of pins.)  The 28 pin bases must be
> different.
> 
> -- 
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
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