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	<title>Circuit Project Electronic &#187; light dark detector circuit</title>
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	<link>http://www.eleccircuit.com</link>
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		<title>Dark Activated Led or Lamp Flasher</title>
		<link>http://www.eleccircuit.com/dark-activated-led-or-lamp-flasher/</link>
		<comments>http://www.eleccircuit.com/dark-activated-led-or-lamp-flasher/#comments</comments>
		<pubDate>Sun, 13 Feb 2011 03:30:55 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Electronic Control]]></category>
		<category><![CDATA[Lighting]]></category>
		<category><![CDATA[automatic night lamp]]></category>
		<category><![CDATA[dark activated led]]></category>
		<category><![CDATA[light dark detector circuit]]></category>

		<guid isPermaLink="false">http://www.eleccircuit.com/?p=10876</guid>
		<description><![CDATA[Simple photo-sensitive circuit, 3V battery supply This circuit adopts the rather unusual Bowes/White emitter coupled multivibrator circuit. The oscillation frequency is about 1Hz and is set by C1 value. The LED starts flashing when the photo resistor is scarcely illuminated. The onset of flashing can be set by trimming R2. Parts: R1 = LDR R2 [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Simple Darkness Activated Alarm by IC 555</title>
		<link>http://www.eleccircuit.com/simple-darkness-activated-alarm-by-ic-555/</link>
		<comments>http://www.eleccircuit.com/simple-darkness-activated-alarm-by-ic-555/#comments</comments>
		<pubDate>Wed, 11 Aug 2010 14:22:31 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[alarm systems]]></category>
		<category><![CDATA[Lighting]]></category>
		<category><![CDATA[light alarm circuit]]></category>
		<category><![CDATA[light dark detector circuit]]></category>

		<guid isPermaLink="false">http://www.eleccircuit.com/?p=8405</guid>
		<description><![CDATA[Most darkness activated alarms employ opamps and some logic ICs. Here, a less expensive approach is shown based on the eternal 555, this time in monostable multivibrator mode. Components R2 and C1 represent a one-second network. When the LDR (light dependent resistor) is in the dark, its resistance is high, pulling pin 2 of the [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Active light control by LDR and BC337</title>
		<link>http://www.eleccircuit.com/active-light-control-by-ldr-and-bc337/</link>
		<comments>http://www.eleccircuit.com/active-light-control-by-ldr-and-bc337/#comments</comments>
		<pubDate>Sun, 02 May 2010 06:36:01 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Electronic Control]]></category>
		<category><![CDATA[Lighting]]></category>
		<category><![CDATA[automatic light switch]]></category>
		<category><![CDATA[LDR control circuit]]></category>
		<category><![CDATA[light dark detector circuit]]></category>

		<guid isPermaLink="false">http://www.eleccircuit.com/?p=7025</guid>
		<description><![CDATA[This is automatic light circuit when be become dark. It by use LED Lamp, be a place gives the light and this circuit has small-sized use volt supply 3V only. The work of the circuit be when there is the light affects LDR1 will valuable the resistance at LDR1. It be down make Q1 work [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Light Dark Detector Alarm by IC 555</title>
		<link>http://www.eleccircuit.com/light-dark-detector-alarm-by-ic-555/</link>
		<comments>http://www.eleccircuit.com/light-dark-detector-alarm-by-ic-555/#comments</comments>
		<pubDate>Thu, 14 Aug 2008 02:11:10 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[555]]></category>
		<category><![CDATA[detector]]></category>
		<category><![CDATA[Lighting]]></category>
		<category><![CDATA[LDR sensor]]></category>
		<category><![CDATA[light dark detector circuit]]></category>
		<category><![CDATA[lighting sensor]]></category>
		<category><![CDATA[NE555]]></category>

		<guid isPermaLink="false">http://www.eleccircuit.com/?p=3285</guid>
		<description><![CDATA[Today we come to see the circuit detects the light by have a voice warn. When meet the light or be become dark depend on using S1 ( follow the circuit ). For this my circuit uses the integrated circuit IC 555 be pillar equipment again. You can choose can use many the number be [...]]]></description>
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