a:5:{s:8:"template";s:8138:"<!DOCTYPE html>
<html lang="en-US">

<head>
<meta charset="utf-8"/>
<meta content="width=device-width" name="viewport"/>
<title>{{ keyword }}</title>
<link href="http://gmpg.org/xfn/11" rel="profile"/>


<link href="http://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700&amp;subset=latin,latin-ext" id="twentytwelve-fonts-css" media="all" rel="stylesheet" type="text/css"/>
<style id="twentytwelve-style-css" media="all" rel="stylesheet" type="text/css">/*



/* =Reset
-------------------------------------------------------------- */

html, body, div, h1, h2, h3, a, ul, li, footer, header, hgroup, nav {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	vertical-align: baseline;
}
body {
	line-height: 1;
}
ul {
	list-style: none;
}
h1,
h2,
h3 {
	clear: both;
}
html {
	overflow-y: scroll;
	font-size: 100%;
	-webkit-text-size-adjust: 100%;
	-ms-text-size-adjust: 100%;
}
a:focus {
	outline: thin dotted;
}
footer,
header,
hgroup,
nav {
	display: block;
}

/* Clearing floats */
.wrapper:after {
	clear: both;
}
.wrapper:before,
.wrapper:after {
	display: table;
	content: "";
}


.menu-toggle {
	padding: 6px 10px;
	padding: 0.428571429rem 0.714285714rem;
	font-size: 11px;
	font-size: 0.785714286rem;
	line-height: 1.428571429;
	font-weight: normal;
	color: #7c7c7c;
	background-color: #e6e6e6;
	background-repeat: repeat-x;
	background-image: -moz-linear-gradient(top, #f4f4f4, #e6e6e6);
	background-image: -ms-linear-gradient(top, #f4f4f4, #e6e6e6);
	background-image: -webkit-linear-gradient(top, #f4f4f4, #e6e6e6);
	background-image: -o-linear-gradient(top, #f4f4f4, #e6e6e6);
	background-image: linear-gradient(top, #f4f4f4, #e6e6e6);
	border: 1px solid #d2d2d2;
	border-radius: 3px;
	box-shadow: 0 1px 2px rgba(64, 64, 64, 0.1);
}
.menu-toggle {
	cursor: pointer;
}
.menu-toggle:hover {
	color: #5e5e5e;
	background-color: #ebebeb;
	background-repeat: repeat-x;
	background-image: -moz-linear-gradient(top, #f9f9f9, #ebebeb);
	background-image: -ms-linear-gradient(top, #f9f9f9, #ebebeb);
	background-image: -webkit-linear-gradient(top, #f9f9f9, #ebebeb);
	background-image: -o-linear-gradient(top, #f9f9f9, #ebebeb);
	background-image: linear-gradient(top, #f9f9f9, #ebebeb);
}
.menu-toggle:active {
	color: #757575;
	background-color: #e1e1e1;
	background-repeat: repeat-x;
	background-image: -moz-linear-gradient(top, #ebebeb, #e1e1e1);
	background-image: -ms-linear-gradient(top, #ebebeb, #e1e1e1);
	background-image: -webkit-linear-gradient(top, #ebebeb, #e1e1e1);
	background-image: -o-linear-gradient(top, #ebebeb, #e1e1e1);
	background-image: linear-gradient(top, #ebebeb, #e1e1e1);
	box-shadow: inset 0 0 8px 2px #c6c6c6, 0 1px 0 0 #f4f4f4;
	border: none;
}


/* Body, links, basics */
html {
	font-size: 87.5%;
}
body {
	font-size: 14px;
	font-size: 1rem;
	font-family: Helvetica, Arial, sans-serif;
	text-rendering: optimizeLegibility;
	color: #444;
}
body.custom-font-enabled {
	font-family: "Open Sans", Helvetica, Arial, sans-serif;
}
a {
	outline: none;
	color: #21759b;
}
a:hover {
	color: #0f3647;
}

/* Assistive text */
.assistive-text {
	position: absolute !important;
	clip: rect(1px, 1px, 1px, 1px);
}
.main-navigation .assistive-text:hover,
.main-navigation .assistive-text:active,
.main-navigation .assistive-text:focus {
	background: #fff;
	border: 2px solid #333;
	border-radius: 3px;
	clip: auto !important;
	color: #000;
	display: block;
	font-size: 12px;
	padding: 12px;
	position: absolute;
	top: 5px;
	left: 5px;
	z-index: 100000; /* Above WP toolbar */
}

/* Page structure */
.site {
	padding: 0 24px;
	padding: 0 1.714285714rem;
	background-color: #fff;
}

/* Header */
.site-header {
	padding: 24px 0;
	padding: 1.714285714rem 0;
}
.site-header h1,
.site-header h2 {
	text-align: center;
}
.site-header h1 a {
	color: #515151;
	display: inline-block;
	text-decoration: none;
}
.site-header h1 a:hover {
	color: #21759b;
}
.site-header h1 {
	font-size: 24px;
	font-size: 1.714285714rem;
	line-height: 1.285714286;
	margin-bottom: 14px;
	margin-bottom: 1rem;
}
.site-header h2 {
	font-weight: normal;
	font-size: 13px;
	font-size: 0.928571429rem;
	line-height: 1.846153846;
	color: #757575;
}

/* Navigation Menu */
.main-navigation {
	margin-top: 24px;
	margin-top: 1.714285714rem;
	text-align: center;
}
.main-navigation li {
	margin-top: 24px;
	margin-top: 1.714285714rem;
	font-size: 12px;
	font-size: 0.857142857rem;
	line-height: 1.42857143;
}
.main-navigation a {
	color: #5e5e5e;
}
.main-navigation a:hover {
	color: #21759b;
}
.main-navigation div.nav-menu > ul {
	display: none;
}
.menu-toggle {
	display: inline-block;
}

/* Banner */

/* Sidebar */

/* Footer */
footer[role="contentinfo"] {
	border-top: 1px solid #ededed;
	clear: both;
	font-size: 12px;
	font-size: 0.857142857rem;
	line-height: 2;
	max-width: 960px;
	max-width: 68.571428571rem;
	margin-top: 24px;
	margin-top: 1.714285714rem;
	margin-left: auto;
	margin-right: auto;
	padding: 24px 0;
	padding: 1.714285714rem 0;
}
footer[role="contentinfo"] a {
	color: #686868;
}
footer[role="contentinfo"] a:hover {
	color: #21759b;
}


/* Minimum width of 600 pixels. */
@media screen and (min-width: 600px) {
	.site {
		margin: 0 auto;
		max-width: 960px;
		max-width: 68.571428571rem;
		overflow: hidden;
	}
	.site-header h1,
	.site-header h2 {
		text-align: left;
	}
	.site-header h1 {
		font-size: 26px;
		font-size: 1.857142857rem;
		line-height: 1.846153846;
		margin-bottom: 0;
	}
	.main-navigation div.nav-menu > ul {
		border-bottom: 1px solid #ededed;
		border-top: 1px solid #ededed;
		display: inline-block !important;
		text-align: left;
		width: 100%;
	}
	.main-navigation ul {
		margin: 0;
		text-indent: 0;
	}
	.main-navigation li a,
	.main-navigation li {
		display: inline-block;
		text-decoration: none;
	}
	.main-navigation li a {
		border-bottom: 0;
		color: #6a6a6a;
		line-height: 3.692307692;
		text-transform: uppercase;
		white-space: nowrap;
	}
	.main-navigation li a:hover {
		color: #000;
	}
	.main-navigation li {
		margin: 0 40px 0 0;
		margin: 0 2.857142857rem 0 0;
		position: relative;
	}
	.menu-toggle {
		display: none;
	}
}

/* Minimum width of 960 pixels. */
@media screen and (min-width: 960px) {
	body {
		background-color: #e6e6e6;
	}
	body .site {
		padding: 0 40px;
		padding: 0 2.857142857rem;
		margin-top: 48px;
		margin-top: 3.428571429rem;
		margin-bottom: 48px;
		margin-bottom: 3.428571429rem;
		box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
	}
}


/* =Print
----------------------------------------------- */

@media print {
	body {
		background: none !important;
		color: #000;
		font-size: 10pt;
	}
	a {
		text-decoration: none;
	}
	.site {
		clear: both !important;
		display: block !important;
		float: none !important;
		max-width: 100%;
		position: relative !important;
	}
	.site-header {
		margin-bottom: 72px;
		margin-bottom: 5.142857143rem;
		text-align: left;
	}
	.site-header h1 {
		font-size: 21pt;
		line-height: 1;
		text-align: left;
	}
	.site-header h2 {
		color: #000;
		font-size: 10pt;
		text-align: left;
	}
	.site-header h1 a {
		color: #000;
	}
	#colophon,
	.main-navigation {
		display: none;
	}
	.wrapper {
		border-top: none;
		box-shadow: none;
	}
}
</style>


<style type="text/css">.recentcomments a{display:inline !important;padding:0 !important;margin:0 !important;}</style>
</head>
<body class="custom-font-enabled single-author">
<div class="hfeed site" id="page">
<header class="site-header" id="masthead" role="banner">
<hgroup>
<h1 class="site-title"><a href="#" rel="home" title="{{ keyword }}">{{ keyword }}</a></h1>
<h2 class="site-description">Just another WordPress site</h2>
</hgroup>
<nav class="main-navigation" id="site-navigation" role="navigation">
<h3 class="menu-toggle">Menu</h3>
<a class="assistive-text" href="#" title="Skip to content">Skip to content</a>
<div class="nav-menu"><ul><li><a href="#" title="Home">Home</a></li><li class="page_item page-item-2"><a href="#">Sample Page</a></li></ul></div>
</nav>
</header>
<div class="wrapper" id="main">
{{ text }}
	</div>
<footer id="colophon" role="contentinfo">
{{ links }}
<div class="site-info">
</div>
</footer>
</div>


</body>
</html>";s:4:"text";s:3754:"Determine the electrical current flowing through the LED. In a previous tutorial, we discussed the need for a heat sink in situations where a device is expected to dissipate a large amount of heat. This will determine the amount of power (in watts) that needs to be dissipated. How big should the current limiting resistor be? LED Heat Dissipation and Lowering Thermal Resistance of LED Lighting Substrates how to calculate power dissipated by resistor - 28 images - calculate the maximum power that can be dis chegg, how much power is dissipated in each resistor in t chegg, calculate the power dissipated in the 2 ohm resist chegg, calculate the power dissipated in the 10 k chegg, mosfet as a switch using power mosfet switching LEDs Drive Current (mA) Performance Package System Watts Dist. This calculator requires the use of Javascript enabled and capable browsers. Otherwise, just estimate the forward voltage based on the color of the LED. Here we introduce Furukawa Electric Co., Ltd.'s heat diffusion and cooling products. Type 40K 50K Lumens B U G LPW Lumens B U G LPW 30C 700 mA 30C 700 - Enter the forward voltage (Vf) rating of the LED and the current in mA that you will be operating the LED at into the Vf and I boxes. Light-Emitting Diodes (LEDs) ... well go over how to make an LED circuit without getting your calculator. As this calculator can only provide results for a single LED, you will not be able to enter a value in the Number of LEDs box. I want to calculate the Power Dissipation over ... Resistor & LED Power Dissipation Calculations in DEPTH Posted by Guest3123 in MRW LED Architectural Wall Sconce Luminaire Catalog Number Notes Type Height: 7-1/4 (18.4 cm) Width: 18 (45.7 cm) Depth: 9 (22.8 cm) Weight: 18 lbs So you just want to light up an LED. The formula for current is I=V/R. What is forward voltage drop? LED & Illumination ... Power and Thermal Dissipation; ... We can now use use the power equation and plug in three values to calculate the power used by the regulator. 100W White LED Wayjun Technology Co.,Ltd - 2 - www.wayjun.com Typical Electrical & Optical Characteristics ( Ta = 25) Item Symbol Condition Min. The total power to dissipate is of course lower than the total power the LED consumes But how much heat sinking is needed? Online Calculator Enables Quick and Simple LED Heat Sink Analysis and Design LED (Single) Circuit Power And Series Resistor Calculator. how to calculate enclosure heat load and why you need to cool electronics. EMP LED Lighting can provide you with an energy cost savings solution for lighting outdoor highway billboards or building mounted billboards. Hello, this is probably a noobie problem... Im testing a led What resistor should you use? How to calculate your LED heat sink. Read about 'led power dissipation over temperature' on element14.com. Simple LED Calculator.  This calulator will help you figure out the proper resistor(s) needed to safely hook up one or more LEDs to power supplies of various values. Alternatively, measure the voltage drop across the LED when it is lit with a voltmeter. Consider this simple CircuitLab sketch of a circuit (a current source): I'm not sure how to calculate the power dissipation across the transistor. Heat sinks and thermal dissipation. Ohm's Law can be used to calculate the resistance for a led. Using LEDs in electronics, for hobbyists and educators. Calculating Power Dissipation ... To calculate power dissipation ... discussed above we can determine the sign of the power dissipation from the signs of I and V. Overheating a high-power LED has a dramatic effect on the chip's lifetime. Use 1.8 volts for a red LED, 3.5 volts for a white LED, 3.6 volts for a blue LED and 2.1 volts for a green, orange or yellow LED. ";s:7:"keyword";s:38:"how to calculate led power dissipation";s:5:"links";s:3619:"<a href='http://reklama.disigma.lt/tmp/docs/0e040.php?e0b334=wd-elements-external-hard-drive-not-showing-up-in-my-computer'>Wd Elements External Hard Drive Not Showing Up In My Computer</a>,
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