Alt-BEAM Archive
Message #03052
To: beam@corp.sgi.com
From: Jean auBois aubois@trail.com
Date: Thu, 06 May 1999 15:26:15 -0600
Subject: [alt-beam] Re: HYPER WALKER 1.0
At 12:50 PM 5/6/99 , Jesse D. wrote:
> Here goes my best "Simplified description" (May still have too much
> Jargon for you..)
Ah... an excellent description!
> To the output
> of this basic RADIO reciever he used a circuit which looks at the signal
> so many times a second, and compares it to the last time it checked, so
> that when the signal changes (compared to the last time it checked) it
> outputs a logic signal.
I honestly believe that Mark misquoted himself. Using a true sample-and-hold
device requires (a) some sort of clock to determine when the samples are
taken and (b) the sample-and-hold circuit itself, which aren't terrifically
simple
beasties.
Although such a circuit would work, it is a terrible over-complexification.
All you need to trigger the other half of the device are the spike-like or
edge-like signals that Mark describes from the crystal radio circuit.
---------------------------------------------------------------
jab
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