I'm looking for a yellow-green (470nm) 10mm diffused LED
Asked by: Nickko
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Q:
Which is the wavelength or the color of this LED?
I'm looking for a yellow-green (470nm) 10mm diffused LED
I'm looking for a yellow-green (470nm) 10mm diffused LED
A:
Hi Nickko, The wavelength of this LED is 520-530nm.
Answered by: Michael Lockhart
23-May-18
Q:
Hello, I am looking to make a string on tin can lamps for my young son that will have his name spelt out in the tin cans. I am hoping you can advise me on the components that I would need. I was thinking of one led in each tin can that will be bright enough to light up through the holes drilled in the can for each letter of his name.
Would it be battery powered or mains plug in and for each options what other components would I need.
Happy to look up how to put it all together if you can advise me what I need. I will be using 8 tin cans and expect it to be about 1 meter from the first tin to the last and will hang it on his wall.
If this isn't clear feel free to ask any questions.
Thanks for your help.
Would it be battery powered or mains plug in and for each options what other components would I need.
Happy to look up how to put it all together if you can advise me what I need. I will be using 8 tin cans and expect it to be about 1 meter from the first tin to the last and will hang it on his wall.
If this isn't clear feel free to ask any questions.
Thanks for your help.
Asked by: Thomas
A:
It is tricky to comment on a specific installation, I would always suggest giving it a try and they scale it up. What I can do is give you some pointers:
The LEDs you are looking have a brightness of 1750mCd, it doesn’t equate to candles exactly, but as a ball park estimate 1000mCd is the same as a candle. So the LED is as bright as about two candles. However it isn’t that easy as a candle can be viewed from any direction, but the LED has a viewing of 60 degrees, so may or might not be good at putting the light in the right place for the holes.
You will need a current limit resistor, see the LED calculator tab on the page of the LED you choose to use to work out the value of the resistor. 8 of these LEDs at 20mA each will use 160mA in total so I’d recommend a power supply otherwise you will be changing the batteries every day. A 5V supply such as:
2208-5v-1a-micro-usb-uk-mains-wall-power-supply Would have more than enough power for the job.
Answered by: Geoff Hampson
22-Jun-16
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