Alt-BEAM Archive
Message #07755
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Tue, 16 Nov 1999 09:45:57 -0800
Subject: [alt-beam] Re: Cholroplast thingy
content-transfer-encoding: quoted-printable
This may work but it is untested. The PD or green LEDs act as photovoltaic
generators and steer the 100K resistor current to the MPSA12 with the lowe=
r
light level. Try adding a little positive feedback by crosscoupling the
collectors to the opposite bases.
=09=09Wilf Rigter=09mailto:wilf.rigter@powertech.bc.ca
=09=09=09=09=09tel:=09(604)590-7493 =
=09=09=09=09=09fax:=09(604)590-3411
<> =
> -----Original Message-----
> From:=09Richard Caudle [SMTP:richard@cqc.com]
> Sent:=09Saturday, November 13, 1999 10:15 AM
> To:=09BEAM
> Subject:=09Cholroplast thingy
> =
> _____ =
> =
> =A0
> Good day, BEAM cats!
> =A0
> I'm building some Christmas presents and I've hit a bit of a snag.=A0
> Attached is the hookup of the thing that I'm working on at the moment, bu=
t
> both motors won't run.=A0 All that runs is one of them.=A0 If I unplug th=
e
> running one, the non-running one runs.=A0 The motors that I'm using are f=
rom
> CDROM drives.=A0 I think they are the ones that eject the CD.=A0 Any
> suggestions?
> =A0
> Richard Caudle
> www.geocities.com/frankendaddy <http://www.geocities.com/frankendaddy>
> Home ICQ - Frankendaddy
> =A0
> Guardians of the sacred words: Nee, Ptang, and NeeWhon!=A0=A0=A0=A0=A0=A0=
=A0=A0 << File:
> chloroplast2k.bmp >> =
Attachment: photochlor.gif
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