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12-11-2014, 03:22 PM | #1 |
I joined the Band! Join Date: May 2006 Location: Between a rock and a hard spot!
Posts: 1,786
| LED Light wire harness question
I have some 10mm LED Bulbs that I will be running 4 in the upper light bar. I want to run them on a 1300Mah 7.4v (2s) lipo Here are the specs. SPECIFICATIONS: Source Material:InGaN ! Emitting Colour:10MM POWER WHITE 1W LED LENS Type:Water clear Color Temperature: -- Luminous Intensity-MCD: Typ: 390,000 mcd Reverse Voltage:5.0 V DC Forward Voltage: Typical: DC Forward Current:300mA Viewing Angle:40 degree Lead Soldering Temp:260°C for 5 seconds If I run a pair of them in series The amp draw would be 6v min. and 6.8v would be best and 7.2v Max Because I want to run the servo at 7.4v the lights would also need to be at 7.4v What would be the best way to do this and what resistors are needed? Thanks to whom ever knows how to do this. |
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12-11-2014, 08:21 PM | #2 |
RCC Addict Join Date: Sep 2011 Location: Beavercreek, Oregon, USA
Posts: 1,950
| Re: LED Light wire harness question
First read this thread. How to wire LEDs This LED calculator will calculate the resistor values for you and design the circuit for you. LED series parallel array wizard If you still have questions after checking the links out, ask away. |
12-11-2014, 10:49 PM | #3 |
I joined the Band! Join Date: May 2006 Location: Between a rock and a hard spot!
Posts: 1,786
| Re: LED Light wire harness question
That is AWESOME! Thank you. Solution 0: 2 x 2 array uses 4 LEDs exactly +7.4V R = 4.7 ohms R = 4.7 ohms The wizard says: In solution 0: each 4.7 ohm resistor dissipates 423 mW the wizard says the color code for 4.7 is yellow violet gold the wizard thinks 1W resistors are needed for your application together, all resistors dissipate 846 mW together, the diodes dissipate 3600 mW total power dissipated by the array is 4446 mW the array draws current of 600 mA from the source. |
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