https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=PT4115 2026-07-22T05:57:08Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=PT4115&diff=32479&oldid=prev 2022-01-14T09:52:07Z

<p></p> <p><b>New page</b></p><div>=== PT4115 ===<br /> * PT4115, current setup is <br /> parrel resistors of two 0.4 R Rp1 = 1/(1/0.4R+1/0.4R) = 0.2R<br /> parral resistors cominbine of Rp1 and 0.5R Rp2 = 1/ (1/Rp1 + 1/0.5R) = 1 / (5+2) = 0.143R<br /> Icur = 0.1 / 0.143R = 700MA<br /> * More setup - parallet to Pin CSN for R1+R2+3<br /> {| class=&quot;wikitable sortable&quot;<br /> |-<br /> ! R1 !! R2 !! R3 !! R !! current<br /> |-<br /> | 0.4 || 0.4 || 0.5 || 0.143R || 700mA<br /> |-<br /> | X || 0.4 || 0.5 || 0.222R || 450mA<br /> |-<br /> | 0.4 || 0.4 || X || 0.2R || 500mA<br /> |-<br /> | 0.33 || 0.5 || 0.5 || 0.1363636364 || 733 mA (default setup)<br /> |}<br /> <br /> Resistor setup for our board<br /> * Icurrent = 0.1/Rcs<br /> {| class=&quot;wikitable sortable&quot;<br /> |-<br /> ! R1 ohm !! R2 ohm !! R3 ohm !! Total resistor ohm !! current supply<br /> |-<br /> | 0.33 || 0.33 or 0.5 || 0.5 || 0.124 ohm || 800 / 700 mA (default)<br /> |-<br /> | 0.33 || NC remove || 0.5 || 0.199 ohm || 500mA <br /> |-<br /> | 0.33 || NC remove || NC remove || 0.303 ohm || 300mA <br /> |-<br /> | NC remove || NC remove || 0.5 || 0.5 ohm || 200mA <br /> |}<br /> {| class=&quot;wikitable sortable&quot;<br /> |-<br /> ! R1 ohm !! R2 ohm !! R3 ohm !! Total resistor ohm !! current supply<br /> |-<br /> | 0.2 || 0.5 || 1 || 0.125 || 800mA (default)<br /> |-<br /> | 0.2 || 0.5 || - || 0.143 ohm || 700mA <br /> |-<br /> | 0.2 || - || 1 || 0.167 ohm || 600mA <br /> |-<br /> | 0.2 || - || - || 0.2 ohm || 500mA <br /> |-<br /> | - || 0.5 || 1 || 0.333 ohm || 300mA <br /> |}<br /> <br /> <br /> [[category: LED Drive]]<br /> <br /> [[category: Micro-bridge]]</div>

Chao