Alt-BEAM Archive
Message #09125
To: beam@sgiblab.sgi.com
From: "Timothy Flytcher" flytch@hotmail.com
Date: Wed, 12 Jan 2000 22:25:19 PST
Subject: [alt-beam] Re: pancake photovores
>I was just thinking could you use one of those cooling
>fans from a computer. I took one apart once. All
>they are are a coil over a set of magnets. They look
>like they'ed be nice. But they take so much voltage
>to run. What you guys think?
I tried to use one in a model a few years ago... The motor consisted of a
ring magnet with a small circuit inside... I found that it was just sent out
a pulse so there was no constant power developed... make a nice shaker...
but little forward movement... mind you this was a low voltage, brushless
DC fan... I'm sure there are other types out there though...
Timothy...
______________________________________________________
9126 Thu, 13 Jan 2000 00:03:42 -0700 [alt-beam] Re: Pager Motors (Was parts source) beam@sgiblab.sgi.com Dave Hrynkiw At 08:54 PM 1/12/00 , Jim Taylor wrote:
>When it comes down to motor efficency, their are 3 factors that have an
>effect.
>armature windings
>brush material
>and magnet material
And don't forget manufacturing tolerances!
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
9127 Thu, 13 Jan 2000 02:20:34 -0500 [alt-beam] Re: microcore experimentation kit George Rix
> What if (as someone suggested) i reate a small circuit board complete wit=
h a
single schmitt inverter and either a plug to put in your own resistor or an
adjustable pot built in. Plus a plug to add your own hysteris. A SMD LED is
on board. It would connect to a breadboard (or protoboard) with some PCB
pins, a little like the BASIC STAMP. With this you could easily grab a few,
plug them in, connect them in your own pattern an you have a microcore.
Would people be intrested in such a thing? I could start a production of
them. Keep in mind though they may be rather expensive compared to buying a
17HC14 and individual parts. This is just because the parts themselves are
rather expensive. (A single schmit inverter is 68 cents).
>=20
>David
I would certainly be interested...
Can I have fourteen trillion? To go? =3D)
Peace out!
Rob Rix
No doubt it will all make sense when we're older =8B Calvin and Hobbes
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