<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1484367744878_2557"><span>Hank,</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2708" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2707">step up, or step down? What voltage is your power supply?</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2706" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2705">There are plenty of cheap buck (step down) or boost (step up) dc / dc converters on ebay.</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2704" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2703">Just make sure the continuous amp rating is more than your coms.</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2645" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2644">Sometimes they sell buck / boost converters & specify that if you want to draw</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2685" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2684">over a certain amps, then you need to add cooling, most likely in the form of a heat sink.</span></div><div id="yui_3_16_0_ym19_1_1484367744878_2683" dir="ltr"><span id="yui_3_16_0_ym19_1_1484367744878_2752"> Alan</span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1484367744878_2504"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1484367744878_2640" style="display: block;"> <div id="yui_3_16_0_ym19_1_1484367744878_2639" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1484367744878_2638" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1484367744878_2643" dir="ltr"> <font id="yui_3_16_0_ym19_1_1484367744878_2650" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1484367744878_2721"> <b><span style="font-weight: bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, January 14, 2017 3:41 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [PSUBS-MAILIST] power supply<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1484367744878_2637"><br><div id="yiv5431456146"><div id="yui_3_16_0_ym19_1_1484367744878_2642"><div id="yui_3_16_0_ym19_1_1484367744878_2641" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div id="yiv5431456146yui_3_16_0_ym19_1_1484361293854_2844">Hi All,</div><div id="yiv5431456146yui_3_16_0_ym19_1_1484361293854_2844">Progress is good with Elementary 3000, I just installed my speed controllers and sure like them. Got some for Gamma also. I am nearing the last item to wire and that is the coms, they are 24V. I only have one option to create 24V and that is to make a circuit that includes the battery in the hydraulic tank. My spider senses are telling me that is a bad idea? It would be very simple, or I will have to find a step up power converter?</div><div id="yiv5431456146yui_3_16_0_ym19_1_1484361293854_2844">Hank</div><div id="yiv5431456146yui_3_16_0_ym19_1_1484361293854_2844">Oh ya, I can operate the manipulator from inside the sub now, it is pretty sweet!</div></div></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a id="yui_3_16_0_ym19_1_1484367744878_2807" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div></div></body></html>