Alt-BEAM Archive
Message #02628
To: Jakub Pietracha whraven@free.com.pl
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Sat, 24 Apr 1999 23:46:50 -0700
Subject: [alt-beam] Re: PNC problems.
Sorry...I was just trying to teach you how the PNC works. After all, anyone who
knows anything about electronics can troubleshoot a circuit if they know how it
works.
Here's a recap.
Vcc
|
|| 2.2M ohm resistor
|
| signal diode
--(1)----inverter--(2)--|>|---(3)--- PIN 1
|
= 2.2 uF electro capacitor
|
Gnd
At power up, the cap is like a short to ground so the input to the inverter (1)
is a low. That gets inverted (2) to a high and passes through the forward
biased diode (3). The high is applied to one neuron in the microcore and it
eats up all the processes going around the loop.
When the cap charges above the inverters threshold, the inverter output (2)
flips to a low. This is blocked by the diode which effectively cuts the PNC out
of the microcore loop. The process that was held at the neuron is released and
starts it's merry journey around the microcore.
Chiu
> Jakub Pietracha wrote:
>
> Few days ago I wrote an e-mail about my PNC problems. I got only one leter but
> nothing constructive. The author of the leter treated me like complete
> ignorant who doesent know anything about electronics. And this is suppose to
> be an educational mailing list! ANYONE who can help me please reply. I managed
> to go around the problem and designed my own PNC solution but I stel whant to
> know what was wrong with the previous circuit. Heres a copy of my previous
> e-mail:
--
Chiu-Yuan Fang
chiumanfu@home.com
ICQ=5614919
http://www.geocities.com/SouthBeach/6897/beam2.html
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