<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>delabs Schematics - Electronic Circuit &#187; Opamp-Circuits</title>
	<atom:link href="http://www.electronics-circuits.com/tech/category/opamp-circuits/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.electronics-circuits.com/tech</link>
	<description>Electronic Schematic Diagrams of delabs</description>
	<lastBuildDate>Wed, 30 Nov 2011 07:01:38 +0000</lastBuildDate>
	<language>en</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.3</generator>
		<item>
		<title>Resistance Measurement Analog LED Meter</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/resistance-measurement-analog-led-meter/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/resistance-measurement-analog-led-meter/#comments</comments>
		<pubDate>Sun, 22 Feb 2009 02:05:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[LED-Circuits]]></category>
		<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/resistance-measurement-analog-led-meter/</guid>
		<description><![CDATA[This is a LED Analog Meter, This can be used as a Resistance Meter and Low Impedance Voltmeter for Battery Levels. To measure battery voltage, the R5-R12-R17 etc. part of the Reference Resistor Divider Network can be modified to suit. Shown here is for 4 LEDs, Use Three LM324 for 12 or More LEDs and <a href='http://www.electronics-circuits.com/tech/2009/02/resistance-measurement-analog-led-meter/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/resistance-measurement-analog-led-meter/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Analog Level by BCD Thumbwheel Switch</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/analog-level-by-bcd-thumbwheel-switch/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/analog-level-by-bcd-thumbwheel-switch/#comments</comments>
		<pubDate>Fri, 20 Feb 2009 06:35:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/analog-level-by-bcd-thumbwheel-switch/</guid>
		<description><![CDATA[BCD Thumbwheel Switch is used to input-set data in digital form, this can be read by digital circuits, uC and uP systems and PLC-SCADA Interfaces. In the early transition of analog to digital, before uP became acceptable, Digital systems without uP were made, it even had printers, RAM and displays. The uP systems were coming <a href='http://www.electronics-circuits.com/tech/2009/02/analog-level-by-bcd-thumbwheel-switch/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/analog-level-by-bcd-thumbwheel-switch/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Opamp Supply on Buffered Virtual Ground</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/opamp-supply-on-buffered-virtual-ground/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/opamp-supply-on-buffered-virtual-ground/#comments</comments>
		<pubDate>Thu, 19 Feb 2009 11:01:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Power-Supplies]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/opamp-supply-on-buffered-virtual-ground/</guid>
		<description><![CDATA[When a Inverting Opamp Configuration is at a steady state, we say the Inverting Input is at a Virtual Ground. That means it is at 0V w.r.t to the dual power supply ground, but it cannot drive or draw any current. It is at a high impedance, but still at 0V. When you buffer this <a href='http://www.electronics-circuits.com/tech/2009/02/opamp-supply-on-buffered-virtual-ground/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/opamp-supply-on-buffered-virtual-ground/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Millivolt Source &#8211; Field Calibration Current Loop</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/millivolt-source-field-calibration-current-loop/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/millivolt-source-field-calibration-current-loop/#comments</comments>
		<pubDate>Thu, 19 Feb 2009 06:50:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>
		<category><![CDATA[Process Control]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/millivolt-source-field-calibration-current-loop/</guid>
		<description><![CDATA[This is easy to rig millivolt source for field calibration or troubleshooting of 4-20 mA current loops. Here a Darlington pair is used for current amplification which reduces the Ib error as gain is very high. A rotary switch selects, 4-12-20 mA Preset points. A Bourns multi-turn wirewound Pot can also be used with a <a href='http://www.electronics-circuits.com/tech/2009/02/millivolt-source-field-calibration-current-loop/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/millivolt-source-field-calibration-current-loop/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Precision Op-Amp Current Source</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/precision-op-amp-current-source/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/precision-op-amp-current-source/#comments</comments>
		<pubDate>Thu, 19 Feb 2009 04:01:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Process Control]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/precision-op-amp-current-source/</guid>
		<description><![CDATA[In this circuit we tackle the error indicated in the earlier Current Source. The LM336-2.5V eliminates the tiny error of the regulated supply and resistors. Thereby increasing Precision to a higher degree. The opamp mirrors the stable 2.5V across P3 + R13. With P3 Bourns 10 Turn Trimpot you can trim the current for calibration. <a href='http://www.electronics-circuits.com/tech/2009/02/precision-op-amp-current-source/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/precision-op-amp-current-source/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Current Source for Resistance Measurement</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/current-source-for-resistance-measurement/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/current-source-for-resistance-measurement/#comments</comments>
		<pubDate>Wed, 18 Feb 2009 14:01:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/current-source-for-resistance-measurement/</guid>
		<description><![CDATA[Here is a current source you can build for resistance measurement. When the current is held constant, you know as per Ohm&#8217;s Law the Voltage across Resistor is proportional to Resistance value. The supply is +12 and -12, The total voltage across R6 + R7 is 24V. Then 24V / 120K = 0.2mA. The voltage <a href='http://www.electronics-circuits.com/tech/2009/02/current-source-for-resistance-measurement/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/current-source-for-resistance-measurement/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Ammeter and Precision Rectifier</title>
		<link>http://www.electronics-circuits.com/tech/2009/02/ammeter-and-precision-rectifier/</link>
		<comments>http://www.electronics-circuits.com/tech/2009/02/ammeter-and-precision-rectifier/#comments</comments>
		<pubDate>Mon, 16 Feb 2009 08:02:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Opamp-Circuits]]></category>
		<category><![CDATA[Test-Measurement]]></category>

		<guid isPermaLink="false">http://www.electronics-circuits.com/tech/2009/02/ammeter-and-precision-rectifier/</guid>
		<description><![CDATA[Studying current measurement is a prerequisite for many of the measuring techniques. The current parameter mainly specifies the power consumption in a circuit, given the value of resistance. It is found convenient to measure current rather than voltage for knowing power output and determining efficiency. It may be required to measure leakages in circuits at <a href='http://www.electronics-circuits.com/tech/2009/02/ammeter-and-precision-rectifier/'>Read More ...</a>]]></description>
		<wfw:commentRss>http://www.electronics-circuits.com/tech/2009/02/ammeter-and-precision-rectifier/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
	</channel>
</rss>

<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Minified using disk: basic
Page Caching using disk: enhanced
Object Caching 476/536 objects using disk: basic

Served from: www.electronics-circuits.com @ 2012-02-05 15:10:57 -->
