Alt-BEAM Archive
Message #06698
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Tue, 12 Oct 1999 21:23:34 -0700
Subject: [alt-beam] Re: Suspended Microcore?
No doubt about it : the 74xx240 (xx=HC/HCT/AC/ACT) is ideal for bicores as
you say up to 4 bicores on one chip or 2 bicores with drivers on one chip or
1 bicore + reverser + drivers on one chip. Very versatile! But it is good to
kno that you could make a bicore with a HC14 if you had to.
BTW You will find that the 74HC/HCT240 is not a Schmitt Driver but "some"
older LS versions did have a small amount of hysteresis so were in effect
Schmitt drivers.
regards
Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
tel: (604)590-7493
fax: (604)590-3411
> -----Original Message-----
> From: jclark76 [SMTP:jclark76@bellsouth.net]
> Sent: Tuesday, October 12, 1999 8:25 PM
> To: beam@sgiblab.sgi.com
> Subject: RE: Suspended Microcore?
>
> the 240 is a Schmitt Driver. It would eliminate the need for external
> motor
> drivers. in a sense. Smaller motors would work fine.
>
> I don't see why you can't use a 240. It would be like 2 bicores on one
> chip.
> I'm sure I've seen that somewhere
>
> -_-_-_-_-_-_
> A wise man once told me, "How did you get past the dogs!?!"
>
> > -----Original Message-----
> > From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> > Behalf Of Iv Clarence Harper
> > Sent: Tuesday, October 12, 1999 6:26 PM
> > To: beam@sgiblab.sgi.com
> > Subject: Re: Suspended Microcore?
> >
> >
> > Ok, so how does a bicore built with a 74HC240 differ from one built with
> a
> > 74HC14?
> >
> > -Clarence
> > ~~~~~
> > Never before has so much silliness passed as serious business.
> > ~~~~~
> >
> >
> >
> >
>
6699 Tuesday, 12 October 1999 6:11 Re: solar powering the beam ant beam@sgiblab.sgi.com Dave Hrynkiw
>At 01:35 PM 10/11/99 , David Perry wrote:
>>Does any1 know how to solar power the beam ant, i saw somewhere that a
>>couple of PV cells were hooked up to 2 .33F caps and it ran continuosly in
>>the sun. Is this true?
>
>ALMOST continually. We just put a video of some BEAMant 6's on our website
at:
>http://www.solarbotics.com/videos.shtml
>
>There are two, one in AVI, one in MOV format, and both are LARGE
>(16/13Meg). Sorry - haven't had the chance to tweak the settings yet.
>
>Regards,
>Dave
>---------------------------------------------------------------
>"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
>that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
> 2 vowels. Pronounciation? _SMITH_".
> http://www.solarbotics.com
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