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	<title>delabs Schematics - Electronic Circuit &#187; Embedded-Systems</title>
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	<description>Electronic Schematic Diagrams of delabs</description>
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		<title>Interface ICL7135 Voltmeter to Atmel 89C52 or PC</title>
		<link>http://www.electronics-circuits.com/tech/2010/07/interface-icl7135-voltmeter-to-atmel-89c52-or-pc/</link>
		<comments>http://www.electronics-circuits.com/tech/2010/07/interface-icl7135-voltmeter-to-atmel-89c52-or-pc/#comments</comments>
		<pubDate>Fri, 16 Jul 2010 08:20:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Embedded-Systems]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2010/07/interface-icl7135-voltmeter-to-atmel-89c52-or-pc/</guid>
		<description><![CDATA[This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port. ICL7135 to Printer port Interface <a href='http://www.electronics-circuits.com/tech/2010/07/interface-icl7135-voltmeter-to-atmel-89c52-or-pc/'>Read More ...</a>]]></description>
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		<item>
		<title>Interface a uC to PC RS232 with MAX232A</title>
		<link>http://www.electronics-circuits.com/tech/2009/10/interface-a-uc-to-pc-rs232-with-max232a/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/10/interface-a-uc-to-pc-rs232-with-max232a/#comments</comments>
		<pubDate>Thu, 08 Oct 2009 01:56:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Embedded-Systems]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/10/interface-a-uc-to-pc-rs232-with-max232a/</guid>
		<description><![CDATA[This is the standard configuration on how to Interface a uC like 8051 to PC RS232 with MAX232A. The UART or Serial port was not present in 8049/8749 chips which were the ancestors of 8051/8031. Pages of code were needed to make a software UART in MCS-48. The 8051 integrated the hardware UART and short <a href='http://www.electronics-circuits.com/tech/2009/10/interface-a-uc-to-pc-rs232-with-max232a/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Precision Amplifier with Digital uC Control</title>
		<link>http://www.electronics-circuits.com/tech/2008/12/precision-amplifier-with-digital-uc-control/</link>
		<comments>http://www.electronics-circuits.com/tech/2008/12/precision-amplifier-with-digital-uc-control/#comments</comments>
		<pubDate>Mon, 15 Dec 2008 10:15:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Embedded-Systems]]></category>
		<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2008/12/precision-amplifier-with-digital-uc-control/</guid>
		<description><![CDATA[When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The Circuits DACT0008 and DACT0009 are both useful in building instruments which have digital control. This circuit DACT0009 is similar to DACT0008 but gains of upto 100 <a href='http://www.electronics-circuits.com/tech/2008/12/precision-amplifier-with-digital-uc-control/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Precision Attenuator for Digital uC Control</title>
		<link>http://www.electronics-circuits.com/tech/2008/12/precision-attenuator-for-digital-uc-control/</link>
		<comments>http://www.electronics-circuits.com/tech/2008/12/precision-attenuator-for-digital-uc-control/#comments</comments>
		<pubDate>Wed, 10 Dec 2008 23:55:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Embedded-Systems]]></category>
		<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2008/12/precision-attenuator-for-digital-uc-control/</guid>
		<description><![CDATA[When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The Circuits DACT0008 and DACT0009 are both useful in building instruments which have digital control. Precision Attenuator with digital control The Circuit DACT0008 is a programmable attenuator <a href='http://www.electronics-circuits.com/tech/2008/12/precision-attenuator-for-digital-uc-control/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Battery Backup for SRAM or Microcontroller</title>
		<link>http://www.electronics-circuits.com/tech/2006/10/battery-backup-for-sram-or-microcontroller/</link>
		<comments>http://www.electronics-circuits.com/tech/2006/10/battery-backup-for-sram-or-microcontroller/#comments</comments>
		<pubDate>Tue, 17 Oct 2006 11:18:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Embedded-Systems]]></category>
		<category><![CDATA[Battery-Circuits]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2006/10/battery-backup-for-sram-or-microcontroller/</guid>
		<description><![CDATA[This circuit can be used as a low cost SRAM and Microcontroller-Microprocessor Battery Backup. All the diodes are 1N4148, The diodes prevent battery discharge back to power source. D8 gives a one way path to charge Battery thru R13 which limits current. D4 ensures a one way path of supply to chip when power is <a href='http://www.electronics-circuits.com/tech/2006/10/battery-backup-for-sram-or-microcontroller/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>555 based Reset Generator</title>
		<link>http://www.electronics-circuits.com/tech/2005/11/555-based-reset-generator/</link>
		<comments>http://www.electronics-circuits.com/tech/2005/11/555-based-reset-generator/#comments</comments>
		<pubDate>Thu, 24 Nov 2005 03:19:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[555-Circuits]]></category>
		<category><![CDATA[Embedded-Systems]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2005/11/555-based-reset-generator/</guid>
		<description><![CDATA[You must have read all the circuits and explanation on the other pages at delabs to understand this, as i cannot repeat the same thing as i have done it more than once already. The circuit is a 555 monostable, The push-switch is to trigger and generate a reset pulse for uC. The diode is <a href='http://www.electronics-circuits.com/tech/2005/11/555-based-reset-generator/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>RS232 with Opto-Isolation</title>
		<link>http://www.electronics-circuits.com/tech/2005/09/rs232-with-opto-isolation/</link>
		<comments>http://www.electronics-circuits.com/tech/2005/09/rs232-with-opto-isolation/#comments</comments>
		<pubDate>Mon, 26 Sep 2005 11:07:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Digital-Circuits]]></category>
		<category><![CDATA[Discrete-Circuits]]></category>
		<category><![CDATA[Embedded-Systems]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2005/09/rs232-with-opto-isolation/</guid>
		<description><![CDATA[I had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232&#8211;Comm port&#8211;Serial Port. Even though i had isolation at the sensors and actuators to make doubly sure the PC also has been isolated. There are chips that are available for this purpose, The circuit above is built with <a href='http://www.electronics-circuits.com/tech/2005/09/rs232-with-opto-isolation/'>Read More ...</a>]]></description>
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		<slash:comments>0</slash:comments>
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