Alt-BEAM Archive
Message #02003
To: beam beam@corp.sgi.com
From: James Anderson anderson@cfht.hawaii.edu
Date: Sat, 3 Apr 1999 14:46:17 -0800
Subject: SE problems
> Hello list,
>
> I tried breadboarding a Type-1 SE yesterday, but in didn't seem to trigger
> properly. The voltage across the cap (and the FLED) climbed nicely to
about
> 3.5V, but then just leveled out, and didn't activate the motor. The
FLED's a
> red one, from Radio Shack, and the back of the box said "V=3V", which I
assume
> is supposed to be the trigger point.
>
> Although I checked to make sure it was the right way around, I did notice
the
> FLED flashing at one point. Is there anything else that would cause this?
>
> The only other thing I can think of is my motor. I got it out of a quite
old
> answering machine, and it seems to work fine with a battery. The sicker on
it
> says it's from "Sanko Electric", and what looks like an ID number is
> "MM5B60T24-7", if that helps at all.
>
> Anyway, I really appreciate any diagnosis or suggestions.
>
> Wondering Aimlessly,
> James Anderson
>
>
I'm new here but it seems to me that if the box says 3v is the normal
operating voltage it's prolly going to fire at a lower voltage [dimly].
I'm trying to remember. I think it's 1.8 volts required to light a red LED
dimly [corrections welcome] plus the drop across the fled flasher [0.6?] for
2.4 volts???
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