Alt-BEAM Archive
Message #02699
To: Dennison dennlill@buffnet.net
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Tue, 27 Apr 1999 16:16:55 -0700
Subject: [alt-beam] Re: Bicore head targeting?
Poppernets? That's a new one...any more info?
Chiu
> Dennison wrote:
>
> I found out from dave that the controll system for his and Mark T's Heads are
> not Bicores. They use some other "poppernets" or something like that to
> control things. So that brings me back to bicores, how does one tell if the
> bicore has 'targeted' something? You should be able to compare pulse
> durrations, when the pulse durrations are equal in length you know that the
> head has 'locked on' and is no longer in motion. But how to compare these
> pulse's is the question. My first Idea was to connect both outputs in some
> fashion to the +v or gnd side of a sizable cap. The idea goes that, while one
> output charges the cap, the other output discarges. When the pulse durations
> are equal, then in theory the average net change in voltage across the cap
> should be zero. That would mean that at any other point, when the avereage net
> change was a positive value, the head was still in motion. I know it's
> confusing, but think about what would happen if the cap was being charged and
> discharged.
>
> Dennison
--
Chiu-Yuan Fang
chiumanfu@home.com
ICQ=5614919
http://www.geocities.com/SouthBeach/6897/beam2.html
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