Bench Power Supply / Voltage Regulator

prusaprinters

<h3> Bench Power Supply / Voltage Regulator </h3> <p>Adjustable bench supply / linear voltage regulator based on the LM317T IC. Circuit design is based on the datasheet example.</p> <p>The supply is intended to be used with low power projects but is capable of supplying a bit more current when required. I use one rail to power the microcontroller circuit and the other to supply 9V to the h-bridge of two small gear motors. I can pull upto 600mA @ 12V without the need for a fan but things get a bit hot after that.</p> <p>The output voltage depends on main supply voltage. Try to keep your input voltage close to your max required output voltage since the extra is wasted as heat.</p> <ul> <li>Input: 6VDC Output (100mA load): 1,2V - 4,5V </li> <li><p>Input: 12VDC Output (100mA load): 1,2V - 10,4V<br/> . .</p> <p>.<br/> .<br/> I will not grant Thingiverse any rights to my source files so please go here for the Solidworks part files<br/> <a href="https://github.com/KaiserSoft/3D-Printing">https://github.com/KaiserSoft/3D-Printing</a></p> <h3>Instructions</h3> <p>Parts per Power Rail</p> <p>The following parts are required to build one power rail. Simply double every part for a dual rail supply.<br/> .<br/> .</p> </li> <li><p>1x LM317T</p> </li> <li>1x 35V 100uF electrolytic capacitor </li> <li>1x 35V 1uF electrolytic capacitor </li> <li>1x 50V 100nF (1uF) ceramic capacitor </li> <li>1x 220 Ohm 1/4W resistor </li> <li>3x 1N4004 diode (two should be enough, keep across Vin and output pins) </li> <li>1x 10K Ohm pot (adjustment very sensitive... 5K might be better) </li> <li>1x 1K Ohm 1/4W resistor (LED) </li> <li>1x 3mm LED </li> <li>1x Heatsink </li> <li>1x Silpad (between LM317T and heatsink) </li> <li><p>2x female banana connectors with 4mm shaft (<a href="http://www.reichelt.de/Bananenstecker-Zwergstecker/BB-4-RT/3/index.html?ARTICLE=4896">http://www.reichelt.de/Bananenstecker-Zwergstecker/BB-4-RT/3/index.html?ARTICLE=4896</a>)<br/> .<br/> .<br/> .<br/> .<br/> Case Assembly</p> <p>Print and use 4 x 3mm self tapping screws to secure the lid.</p> </li> </ul> <ul> <li>Box Lower v1.STL </li> <li>Top Cover v1.STL</li> </ul> Category: Electronics