Well, you got it right as far as I went.

You'll still need some sort of VCO to convert the voltage at Z into an
output pulse train to drive the LED. You might be able to do this with a 555
timer, but I'm not sure.

Remember, you'll still have to figure out the values for all of the
components, etc.

And again I say IAMNANEE, so this whole idea could easily be trash.

Bob Ammerman
RAm Systems




----- Original Message -----
From: "James Newton, webhost" <jamesnewton@PICLIST.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, November 25, 2003 8:02 PM
Subject: Re: [EE:] Optical NAND design challenge


> source= http://www.piclist.com/piclist/2003/11/25/181607a.txt?
>
>
>      v+
>      |    _|_      |
>      R    /,\      C
>      +--C--+--|<]--+---=Xn
>      /             |
>    pT              R
>      \             |
>      gnd
>
>
>    X'=---[>|---+---=Z
>                |
>    X"=---[>|---+
>                R
>                |
>               gnd
>
> Do I have that right Bob?
>
> Cost is still less than what a cheap PIC and support would be.
>
> ---
> James Newton: PICList.com webmaster, former Admin #3
> mailto:jamesnewton@piclist.com  1-619-652-0593 phone
> http://www.piclist.com/member/JMN-EFP-786
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>
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