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Old 17-09-2017, 05:58 PM   #1
jamielund
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hello all

after some advice for lighting my station area please.

i am bidding on a regulated power adapter and i would like to wire up around 6 warm white led's in parallel for the station roof and then some some lampost etc, i had a look at a calculator and it suggested 4 ohms resistors, which i am not having much luck in finding so i think i may have done something wrong.

the led's will be 3v

any advice or questions and i will try and answer

thanks guys
jamie
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Old 17-09-2017, 06:06 PM   #2
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Need to know the voltage utput of the power adaptor......
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Old 17-09-2017, 06:51 PM   #3
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It's one of these
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Old 17-09-2017, 06:55 PM   #4
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Use 1K0 (1000) Ohms resistor per LED on the 12 volt setting.
On 9 volt setting use 680R (680 Ohms)
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Old 17-09-2017, 06:59 PM   #5
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Thank you FB just a rough idea would do but how many led's do you think this plug could handle?

Jamie
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Old 17-09-2017, 07:03 PM   #6
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If your LEDs are rated at 20mA then a 600mA supply could in theory handle up to 30 (600/20) but to be safe work on 20 to 25.
Before you pay out for that supply check out 1amp supplies from China via eBay - cheapnas chips and will handle a few more LEDs safely if needed.
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Old 17-09-2017, 07:13 PM   #7
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Do you have a link FB i can't find them on eBay
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Old 17-09-2017, 07:23 PM   #8
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This one will light around 100 LEDs on 12v with 1KO resistor per LED.
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Old 17-09-2017, 07:29 PM   #9
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thank you FB
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