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how to wire 10 leds in parallele with resistor and battery? please? Answered

10 green leds 2.4 max volts

Tags:leds

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steveastroukBest Answer (author)2011-07-27

If we ASSUME you have a 3V supply, then you need to put a 33Ohm resistor on EACH led.

If you have a 9V supply, you can put 3 leds in series with a 90 Ohm resistor, and you should find that 3 chains of LEDs look much more evenly lit

Steve

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jconner3 (author)steveastrouk2011-07-27

but chains of three only gives me 9 i need 10 easly lit thats my problum would the 3V light them all bright

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steveastrouk (author)jconner32011-07-27

The maths for 10 doesn't work, unless you have one little lone one, with a different resistor.... If you do, use the33 Ohm I said before. Or, use 12 LEDs instead.

Steve

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jconner3 (author)steveastrouk2011-07-27

i can do that soo 9v with 90 ohm resistor chains of three

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dog digger (author)2011-07-25

What battery are you using. 2 AA batteries will be the best for it

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jconner3 (author)dog digger2011-07-26

can you put up a step by step it would help greatly

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andy70707 (author)dog digger2011-07-26

This. Without the battery voltage, it would be impossible to recommend a resistor. 2AAs should be able to run most LEDs directly. Google "LED resistor calculator". You will also need the current draw of the LEDs, which is usually about 20-30mA.

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steveastrouk (author)2011-07-26

You need a resistor for each LED, or they will die.

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