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	<title>ECT Education</title>
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	<description>eJournal for teachers of electronics and commnications technology</description>
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		<title>Eco nightlight</title>
		<link>http://www.ecteducation.co.uk/index.php/2011/11/eco-nightlight/</link>
		<comments>http://www.ecteducation.co.uk/index.php/2011/11/eco-nightlight/#comments</comments>
		<pubDate>Tue, 01 Nov 2011 21:43:43 +0000</pubDate>
		<dc:creator>Paul Gardiner</dc:creator>
				<category><![CDATA[Key stage 3]]></category>
		<category><![CDATA[Joule thief]]></category>
		<category><![CDATA[nightlight]]></category>
		<category><![CDATA[solar cell]]></category>
		<category><![CDATA[super capacitor]]></category>
		<category><![CDATA[thyristor]]></category>

		<guid isPermaLink="false">http://www.ecteducation.co.uk/?p=520</guid>
		<description><![CDATA[The nightlight is a popular project in schools and, depending on the circuit used, suitable for a very wide student age range.  Even at key stage 2, students can learn much from a basic circuit comprising a battery, switch and LED.  More sophisticated automatic PIC or RC timer controlled circuits offer the scope for programming [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>ZVN4206A N-Channel MOSFET</title>
		<link>http://www.ecteducation.co.uk/index.php/2010/12/zvn4206a-n-channel-mosfet/</link>
		<comments>http://www.ecteducation.co.uk/index.php/2010/12/zvn4206a-n-channel-mosfet/#comments</comments>
		<pubDate>Fri, 24 Dec 2010 16:37:55 +0000</pubDate>
		<dc:creator>Paul Gardiner</dc:creator>
				<category><![CDATA[Theory]]></category>
		<category><![CDATA[MOSFET]]></category>
		<category><![CDATA[Zener diode]]></category>
		<category><![CDATA[ZVN4206]]></category>

		<guid isPermaLink="false">http://www.ecteducation.co.uk/?p=465</guid>
		<description><![CDATA[In the MOSFET, the gate is isolated from the conducting channel by a thin insulating layer (as indicated by the symbol). This forms a capacitor which can be used as the timing capacitance. As with all capacitors, the gate capacitance also has a leakage current. For the ZVN4206A the gate capacitance is typically 300pF and [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Long time delays – why they are difficult to achieve with just RC networks</title>
		<link>http://www.ecteducation.co.uk/index.php/2010/12/long-time-delays-why-they-are-difficult-to-achieve-with-just-rc-networks/</link>
		<comments>http://www.ecteducation.co.uk/index.php/2010/12/long-time-delays-why-they-are-difficult-to-achieve-with-just-rc-networks/#comments</comments>
		<pubDate>Fri, 24 Dec 2010 16:36:54 +0000</pubDate>
		<dc:creator>Paul Gardiner</dc:creator>
				<category><![CDATA[Theory]]></category>
		<category><![CDATA[555 timer]]></category>
		<category><![CDATA[leakage]]></category>
		<category><![CDATA[time constant]]></category>
		<category><![CDATA[time delay]]></category>

		<guid isPermaLink="false">http://www.ecteducation.co.uk/?p=428</guid>
		<description><![CDATA[It is difficult to achieve timing delays of more than a few minutes with the standard 555 circuit because of the way electrolytic capacitors behave. When the capacitor plates are charged a small current passes through the dielectric – this is called the leakage current. A real capacitor behaves like a perfect capacitor in parallel [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>The Nightlight &#8211; evolution of a key stage 3 project</title>
		<link>http://www.ecteducation.co.uk/index.php/2010/12/the-nightlight-evolution-of-a-key-stage-3-project/</link>
		<comments>http://www.ecteducation.co.uk/index.php/2010/12/the-nightlight-evolution-of-a-key-stage-3-project/#comments</comments>
		<pubDate>Fri, 24 Dec 2010 16:17:41 +0000</pubDate>
		<dc:creator>Paul Gardiner</dc:creator>
				<category><![CDATA[Key stage 3]]></category>
		<category><![CDATA[555 timer]]></category>
		<category><![CDATA[LDR]]></category>
		<category><![CDATA[MOSFET]]></category>
		<category><![CDATA[nightlight]]></category>
		<category><![CDATA[time delay]]></category>

		<guid isPermaLink="false">http://www.ecteducation.co.uk/?p=372</guid>
		<description><![CDATA[The When I reached secondary school at the age of 11, the very first project I made in Technology (woodwork as it was then called) was a table lamp based on a halving joint.  When I arrived at my present place of work, I was amazed to find that similar projects were still being made!  [...]]]></description>
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		<title>555 timers, who needs them?</title>
		<link>http://www.ecteducation.co.uk/index.php/2010/04/hello-world/</link>
		<comments>http://www.ecteducation.co.uk/index.php/2010/04/hello-world/#comments</comments>
		<pubDate>Mon, 26 Apr 2010 18:07:15 +0000</pubDate>
		<dc:creator>Paul Gardiner</dc:creator>
				<category><![CDATA[General]]></category>
		<category><![CDATA[40106]]></category>
		<category><![CDATA[555 timer]]></category>
		<category><![CDATA[astable]]></category>
		<category><![CDATA[monostable]]></category>

		<guid isPermaLink="false">http://ect.atheda.com/?p=1</guid>
		<description><![CDATA[The NE555 timer first appeared in 1971.  Although it is now nearly 40 years old, many exam boards still include it in their specifications.  This seems rather odd in a fast developing subject such as electronics.  With an ever expanding range of new technology and devices to learn about, perhaps it is now time to [...]]]></description>
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		<slash:comments>2</slash:comments>
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