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From: Peter Bennett
Subject: Re: Using a CDS Photoresistor
Date: Wed, 15 Jan 2003 10:09:03 -0800
Organization: Home for the Hopelessly Helpful
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com>
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On 15 Jan 2003 05:33:37 -0800, firstname.lastname@example.org (Wakony) wrote:
>> OK, let's start at the beginning.
>> What is it about schematics that you don't understand?
>Pretty much I dont know all of it....
>I dont understand where the power source comes in...
The point marked "+12V" at the top of the drawing goes to the positive
terminal of the power supply. The negative terminal of the supply is
connected to the ground symbol (the downward-pointing arrow-like
device at the bottom of the drawing.) All of the ground symbols will
be connected together.
>What does a cylander with a spring around it mean??? (look at the page
>I linked to above)
That is a relay coil - it, and the two sets of contacts above it are
one component. (a relay is an electrically operated switch)
>The main thing that I dont understand is how you actually build the
>project from the diagram. like how do you hook up all of the stuff;
>photocells, resistors, Potentiometers, etc?
>Thanks for all the help John
Peter Bennett VE7CEI
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