Alt-BEAM Archive

Message #06460



To: beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Thu, 7 Oct 1999 12:53:01 +0700
Subject: RE: microcore with PNC



> 74LSTTL won't work with standard microcore circuit components but if that
is
> all you have and want to get your feet wet then try this untested but
> "should work" LS uCORE with build-in autoPNC:
>
> <>
>
> good luck
>
> Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
>
> > -----Original Message-----
> > From: Sathe Dilip [SMTP:sathe_dilip@bah.com]
> > Sent: Wednesday, October 06, 1999 12:12 PM
> > To: beam@sgiblab.sgi.com
> > Subject: Re: microcore with PNC
> >
> > If you are really using the standard TTL series (Plain 74), you have to
> > use between 4.75 & 5.25 volts supply to reliably operate the circuitry.
> > Even for CMOS 2.8 is kind of on the lower edge.
> >
> > Dilip
> >
> > "Ivan W. Sjafarij" wrote:
> >
> > > standard 4 Nv microcore ( 7414) with ( 'auto' ? ) PNC...
> > SNIP
> > > perfectly. What is wrong ? I have tried both the 74139 or 74245
motor
> > > driver and I've got same result... I've also tried to built the
> > microcore
> > SNIP
> > > current from the power supply? I used two aaa size batery ( about 2,8
> > v)..
> > SNIP
> > --
> > Pl. remove *s from the e-mail address to reply
>


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