Hello,So I recently purchased 2 3v coin cell batteries from sparkfun and I need to use one for helping a certain lady with a dress.She wants to put some UV blacklight leds in the dress so i'm helping her. I'm going to wire them all up in parallel circuits and use smd resistors so that is smaller.I have a question though. What is the correct resistance for this?The forward voltage is 3.2 - 3.8 V , think it would work with 1 3v coin cell?If so what sort of resistor would I need?
It says that the reverse current is <= uA (i got these from china)I meant to say i want to wire the battaries up in series and then the leds in a parallel circuit.
It says that the reverse current is <= uA
then the leds in a parallel circuit.
Max Continuous Forward Current(IFM): 20mA
This is the description. It has a max peak current- RoHS : YesLife Rating : 100,000 HoursEmitted Colour : PurpleSize (mm) : 5mmLens Colour : Water clearPeak Wave Length (nm) : 395 ~ 405Forward Voltage (V) : 3.2 ~ 3.8Reverse Current (uA) : <= 30Luminous Intensity Typ Iv (mcd) : 3000(Typical) ~ 5000(Max)Viewing Angle : 20~25 DegreeMax Power Dissipation(PM): 80mWMax Peak Forward Current(IFP): 75mAMax Continuous Forward Current(IFM): 20mALead Soldering Temperature : 240 Degree (<5Sec)Operating Temperature Range : -25 ~ +85 DegreePreservative Temperature Range : -30 ~ +100 Degree
Yea, I can get the resistors and everything i'm just wondering how i should wire this whole thing up
You could also go with a 3.7V flat LiPo battery.Get a 2000mAH battery, will run quite a while.