<![CDATA[SoliForum - 3D Printing Community — current draw of stock SD3 extruder heatcore]]> 2013-04-12T18:32:46Z PunBB https://www.soliforum.com/topic/1738/current-draw-of-stock-sd3-extruder-heatcore/ <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> That photo is the resistor type, not a nichrome heat core.

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

]]> https://www.soliforum.com/user/906/ 2013-04-12T18:32:46Z https://www.soliforum.com/post/19739/#p19739 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> 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.

]]> https://www.soliforum.com/user/39/ 2013-04-12T18:20:55Z https://www.soliforum.com/post/19733/#p19733 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> SD 3 tech specs says: Nichrome powered extruder,  here is what mine looked like

]]> https://www.soliforum.com/user/574/ 2013-03-16T01:52:24Z https://www.soliforum.com/post/16683/#p16683 <![CDATA[Re: current draw of stock SD3 extruder heatcore]]> That seems a touch low. The original nichrome hotends were around 6 ohms.

]]> https://www.soliforum.com/user/221/ 2013-03-16T00:18:42Z https://www.soliforum.com/post/16676/#p16676 <![CDATA[current draw of stock SD3 extruder heatcore]]> 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?

]]> https://www.soliforum.com/user/574/ 2013-03-15T23:39:06Z https://www.soliforum.com/post/16674/#p16674