http://andromeda.df.lu.lv/wiki/index.php?action=history&feed=atom&title=LED_notes 2026-04-20T16:15:12Z Revision history for this page on the wiki MediaWiki 1.31.0 http://andromeda.df.lu.lv/wiki/index.php?title=LED_notes&diff=3644&oldid=prev 2012-08-01T08:30:53Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 08:30, 1 August 2012</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_2_1_rhs">&#x26AB;</a></td> <td class="diff-deletedline diff-side-deleted"><div><a name="movedpara_0_0_lhs"></a>(+) ---[&gt;|--- (-)</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><br /></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>Typical values for the LED series resistor value at various supply voltages are given in the table below.</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>Typical values for the LED series resistor value at various supply voltages are given in the table below.</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>Note: you may want to drive the LED at a current less than the max I_forward.</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>Note: you may want to drive the LED at a current less than the max I_forward.</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> </div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_0_0_lhs">&#x26AB;</a></td> <td class="diff-addedline diff-side-added"><div><a name="movedpara_2_1_rhs"></a><ins class="diffchange diffchange-inline"> </ins>(+) ---[&gt;|<ins class="diffchange diffchange-inline">--- ---'\/\/\,</ins>--- (-)<ins class="diffchange diffchange-inline"> </ins></div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> </div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>Resistance for one LED at 3V/3.3V/5V/10V power supply:</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>Resistance for one LED at 3V/3.3V/5V/10V power supply:</div></td> </tr> </table>

Leo http://andromeda.df.lu.lv/wiki/index.php?title=LED_notes&diff=3643&oldid=prev 2012-07-31T11:46:07Z

<p>New page: (+) ---[&gt;|--- (-) Typical values for the LED series resistor value at various supply voltages are given in the table below. Note: you may want to drive the LED at a current less than t...</p> <p><b>New page</b></p><div>(+) ---[&gt;|--- (-)<br /> <br /> Typical values for the LED series resistor value at various supply voltages are given in the table below.<br /> <br /> Note: you may want to drive the LED at a current less than the max I_forward.<br /> <br /> Resistance for one LED at 3V/3.3V/5V/10V power supply:<br /> <br /> {| border=1 cellspacing=0 cellpadding=4 align=center<br /> ! I_forward(mA) || V_forward(mA) || R(ohm)@ 3.0V || R(ohm)@ 3.3V || R(ohm)@ 5V || R(ohm)@ 12V<br /> |-align=center<br /> | 2mA || 1.8V || 620 || 750 || 1.6k || 5.1k<br /> |-align=center<br /> | 2mA || 2.1V || 470 || 620 || 1.5k || 5.1k<br /> |-align=center<br /> | 5mA || 1.8V || 240 || 300 || 680 || 2.2k<br /> |-align=center<br /> | 5mA || 2.1V || 180 || 240 || 620 || 2.0k<br /> |-align=center<br /> | 10mA || 1.8V || 120 || 150 || 330 || 1.1k<br /> |-align=center<br /> | 10mA || 2.1V || 91 || 120 || 300 || 1.0k<br /> |-align=center<br /> | 20mA || 1.8V || 68 || 75 || 160 || 560<br /> |-align=center<br /> | 20mA || 2.1V || 47 || 62 || 150 || 510<br /> |}<br /> <br /> <br /> =Links=<br /> * http://ledcalculator.net/<br /> * http://led.linear1.org/</div>

Leo