Alt-BEAM Archive

Message #08370



To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Sat, 18 Dec 1999 09:35:42 -0800
Subject: [alt-beam] Re: chloroplast




Your wish is my command!

Here is a Light Compensated SE (LCSE or should that be lcse?) It should be
used with a solar cell with 7 to 8V max open circuit. The caps should have a
similar voltage rating. The value of the pot is about equal to the brightest
light resistance of the Light Dependent Resistor (LDR). The LDR points in
the same general direction as the solar cell for tracking light variations.
It is usually necessary to desensitize the LDR by partially masking it with
shrinktube or nail polish etc. Experimentation is required to get the right
setting of the pot. Interesting behaviours can result, ie the SE may charge
but not fire until a shadow passes over the LDR (fight or flight response?)



<>
> -----Original Message-----
> From: Bumper314@aol.com [SMTP:Bumper314@aol.com]
> Sent: Friday, December 17, 1999 2:57 PM
> To: beam@sgiblab.sgi.com
> Subject: Re: chloroplast
>
> another thing to add on that is a photoresistor. So in more light it will
> run
> stronger or be more conservative in darker light. Sounds good to me.
>
> Steve



Attachment: lcse.gif

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