Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!fub!uniol!Norbert.Zacharias
From: Norbert.Zacharias@arbi.informatik.uni-oldenburg.de (Norbert Zacharias)
Newsgroups: sci.electronics
Subject: Re: light switches in germany
Keywords: switch germany lighting control query
Message-ID: <4612@uniol.UUCP>
Date: 13 Feb 91 10:43:49 GMT
References: <1991Feb13.035525.3515@watdragon.waterloo.edu>
Organization: University of Oldenburg, Germany
Lines: 36

hziemann@daisy.waterloo.edu (Hans Ziemann) writes:

>I noticed that they have light switches that turn 
>them selves off after a short time.  

Hi Hans
It works very simply.  U have some of paralell wired switches s1 to sn.
			      With that u trigger the relay rel. This relay
		   /          is a special one. It opens after a elected
	*---------/  0------* time. You can buy it in elektricstores
	|          s1       |
	|          /        |          #######
	*---------/  0------*          # rel #
	|          s2       *----------#######--------------|
	|          /        |             #                 |
	*---------/  0------*             #                 |
	|          s3       |            /        % %       |
	|          /        |       ----/  0-----% L %------*
	*---------/  0------*       |             % %       |
	|         sn                |                       |--0
	|                           |                           220 V AC
	|---------------------------*--------------------------0



hope this help
Norbert
-- 
=============================================================================
Norbert Zacharias          Norbert.Zacharias@arbi.informatik.uni-oldenburg.de
FB Physik                                               148964@DOLUNI1.bitnet
Carl-von-Ossietzky-Universitaet
Tel. 0049-441-7983527
 Was Du nicht willst das man Dir tu, das will auch nicht was willst denn Du?
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