<![CDATA[SoliForum - 3D Printing Community — What value of resistor do I need?]]> https://www.soliforum.com/topic/15469/what-value-of-resistor-do-i-need/ Sat, 03 Sep 2016 17:50:35 +0000 PunBB <![CDATA[Re: What value of resistor do I need?]]> https://www.soliforum.com/post/126724/#p126724 Tin - thanx for the help. 
Got some figgerin' to do...

Ski

]]> Sat, 03 Sep 2016 17:50:35 +0000 https://www.soliforum.com/post/126724/#p126724 <![CDATA[Re: What value of resistor do I need?]]> https://www.soliforum.com/post/126723/#p126723 http://www.ohmslawcalculator.com/ohms-law-calculator

a resistance of 3.3333 ohms at 5V will draw 1.5 amps. 
the above calculator should help you.

tin

]]> Sat, 03 Sep 2016 17:18:39 +0000 https://www.soliforum.com/post/126723/#p126723 <![CDATA[What value of resistor do I need?]]> https://www.soliforum.com/post/126720/#p126720 My wife has 4 artificial plant groups that have LED' intertwined in them.  They are powered by boxes with 3 AAA batteries.  Well I got tired of replacing a handful of batteries every few days or so, so I clipped the battery box and replaced it with a 5V wall wart.  I used 1 15 Ohm resister, that was in-line inside each battery box per 2 LED strings, soldered in-line.  Gets a little too hot for my liking, and 2 sets get substantially brighter. 
I would like to use one 5V 2A wall wart to drive them all.  What resistance is required to hook all 4 to 1 power supply?


TIA for any help

Ski

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