Alt-BEAM Archive
Message #01423
To: JVernonM@aol.com, beam@corp.sgi.com
From: Dave Hrynkiw dave@solarbotics.com
Date: Wed, 10 Mar 1999 01:12:25 -0700
Subject: [alt-beam] Re: diagnosis please
At 12:01 PM 3/8/99 , JVernonM@aol.com wrote:
>I have noticed a problem with Virus, one of my symets. He kicks beautifully
>until placed in direct sun, then he seems to "lock up" and do nothing after
>the first pop. If I place my hand over his solar cell for a second or two,
>then remove it, he will kick.
Sounds like a classic overpower-lockup. The 3733 is producing more than
enough power to keep the SE on, and there's enough power "trickling" thru
the motor to keep it in the "on" state. Try a lower value bias resistor (1k
perhaps) in the SE, or (GASP!) a 47 ohm resistor in series with the
solarcell to slow down the charge.
Just a few ideas...
-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
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