LED question
Q. Does anyone know why a single christmas tree mini LED will light up with only 5V? The entire rope will need the usual input of 120V from the mains, ofcourse, just as you would plug it in. But only 5V for a single LED. I thought they were connected in parallel. Then again it doesn't make sense that a single LED would ever use 120 V. I haven't tried hooking it up to the mains with a 120 V adaptor for obvious reasons, but I was wondering if anyone knew.
Edit:
Turns out that the mini LED's in christmas light ropes ARE actually connected in series. There are 50 of them and they share the 120 V from the mains. I was not sure about this because when one of the LED's blew up, if they were connected in series, it would break the circuit and so the entire rope would stop working. But the rope still continues to work because there is a shunt inside each LED, which doesn't break the circuit even after a bulb fuses.
So with my 5 Volt adaptor, I would be able to connect two LED's in series, instead of just one really bright LED which would blow out pretty soon. It's been two days, though.
Q. With a whopping 8000 K color temperature that's typical of most LED's, I was wondering if coloring over the exterior of the bulb would be able to warm up the light given out (This is a misnomer: "warm white" has a lower color temperature than the bluish "cool white"). What I'm asking is, what is a good handmade filter (not GAM filter) that can reduce the CRI of an LED? I'm thinking about using regular sharpie markers. Any warm ideas?
Edit:
Turns out that the mini LED's in christmas light ropes ARE actually connected in series. There are 50 of them and they share the 120 V from the mains. I was not sure about this because when one of the LED's blew up, if they were connected in series, it would break the circuit and so the entire rope would stop working. But the rope still continues to work because there is a shunt inside each LED, which doesn't break the circuit even after a bulb fuses.
So with my 5 Volt adaptor, I would be able to connect two LED's in series, instead of just one really bright LED which would blow out pretty soon. It's been two days, though.
Q. With a whopping 8000 K color temperature that's typical of most LED's, I was wondering if coloring over the exterior of the bulb would be able to warm up the light given out (This is a misnomer: "warm white" has a lower color temperature than the bluish "cool white"). What I'm asking is, what is a good handmade filter (not GAM filter) that can reduce the CRI of an LED? I'm thinking about using regular sharpie markers. Any warm ideas?
2 Comments:
dunno..question pura puri bujhi nai.
i guess may be its not parallel. n usually jei red, green, blue LED lagay on christmas trees, dey shud require less den 4v. the supply voltage to lite em up shud jst be a little over what is required. so 5v is enuf. beshi voltage diley LED wud either blow up or have a short life... bt 120v k hold korte to LED ar bishal resister lagbey. usually 20mA current pass korey LED diye. may be parallel na. dunno... ar theke beshi bujhina parina..
hmm... you can ask doctor Google.
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