Alt-BEAM Archive
Message #06403
To: beam@sgiblab.sgi.com
From: SG sparkyg@seark.net
Date: Sun, 03 Oct 1999 12:42:19 -0500
Subject: [alt-beam] anuther Attn: Wilf: PS Head Question
ok wilf!
but even on that schematic there is no big momma capacitor.
just hook cap b'tween + & - ?
At 07:11 AM 10/5/99 -0700, you wrote:
>Hi Sparky,
>
>V2 and V3 are on the backburner for now: too tricky to adjust! But V1 is
>stable and works fine. Check out Darrell Johnson's site for construction
>details
>
>regards
>
>wilf
>
>SG wrote:
>
>> i can't decide wether or not to do the PSHead V2
>> or the PS Head V3. (probably the version 3, since i
>> have a few 74HCT240's around)
>>
>> on your v2 head schematic, attached here,
>> (originally posted to the group on Sept.7)
>> I don't see any big 'ol woppin Capacitor to be charge by
>> the solar cell. Surly NOT meant to be run directly wired to the
>> solar power source?
>> I'm sure I'm missing something common knowledge here like,
>> the big cap is attached to = & - from power source directly,
>> but if so, what SIZE Cap should I use?
>> AND:
>> have you decided wether Photo Diodes or Photo resistors werk better?
>> (say diodes, since thats what i have!)
>> Thanx!
>> -Sparky
>>
>> ------------------------------------------------------------------------
>> Name: SM_HEAD2.gif
>> SM_HEAD2.gif Type: GIF Image (image/gif)
>> Encoding: base64
>>
>> ------------------------------------------------------------------------
>
>
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