Alt-BEAM Archive
Message #02736
To: beam@corp.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Wed, 28 Apr 1999 13:22:48 -0700
Subject: [alt-beam] Re: Bicore head targeting?
Tested it last night and it works fine but use 100 pf (!) for green LEDs
and 1000pf for generic (medium sensitivity) photodiodes. You can also
substitute small LDRs for the PDs. More details to follow.
enjoy
Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
tel: (604)590-7493
fax: (604)590-3411
> -----Original Message-----
> From: Wilf Rigter [SMTP:Wilf.Rigter@powertech.bc.ca]
> Sent: Tuesday, April 27, 1999 6:15 PM
> To: beam
> Subject: RE: Bicore head targeting?
>
> Come to think of it that original PD comparator was designed for a head
> application using green LEDs as photo diodes like so:
>
> <>
>
> Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
> tel: (604)590-7493
> fax: (604)590-3411
>
> > -----Original Message-----
> > From: Wilf Rigter [SMTP:Wilf.Rigter@powertech.bc.ca]
> > Sent: Tuesday, April 27, 1999 5:14 PM
> > To: 'Richard Piotter'
> > Cc: beam
> > Subject: RE: Bicore head targeting?
> >
> --8<--
> > Here is a BEAM solution which was derived from my PD comparator in the
> > photovore circuit posted some weeks ago. << File: Monohead.gif >>
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