<![CDATA[SoliForum - 3D Printing Community — current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/topic/1738/current-draw-of-stock-sd3-extruder-heatcore/ Fri, 12 Apr 2013 18:32:46 +0000 PunBB <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/post/19739/#p19739 That photo is the resistor type, not a nichrome heat core.

Good news, really - the resistor's a lot less trouble to replace.

]]> Fri, 12 Apr 2013 18:32:46 +0000 https://www.soliforum.com/post/19739/#p19739 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/post/19733/#p19733 no, it should have been 6 ohms.

the fact that it was 3 likely means that the insulation on the nichrom inside teh heatcore failed and it shorted to itself, then draws more current and heats more (and too fast) and the insulation fails even fast over the rest of the wire, and the solder joints fail also...

if thousl be 6Ohm.

drawing 2 Amps, for 24W power.

the stock power supply is able to power a bigger heater.

]]> Fri, 12 Apr 2013 18:20:55 +0000 https://www.soliforum.com/post/19733/#p19733 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/post/16683/#p16683 SD 3 tech specs says: Nichrome powered extruder,  here is what mine looked like

]]> Sat, 16 Mar 2013 01:52:24 +0000 https://www.soliforum.com/post/16683/#p16683 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/post/16676/#p16676 That seems a touch low. The original nichrome hotends were around 6 ohms.

]]> Sat, 16 Mar 2013 00:18:42 +0000 https://www.soliforum.com/post/16676/#p16676 <![CDATA[current draw of stock SD3 extruder heatcore]]> https://www.soliforum.com/post/16674/#p16674 Any body know? I measured the voltage ,it's at ~12.3v .Before the resistor fried  it measured  2.6 ohm. Is that about right or not?

]]> Fri, 15 Mar 2013 23:39:06 +0000 https://www.soliforum.com/post/16674/#p16674