Reptile & Amphibian Forums

I was told that across the diode i'll have a 1.5 voltage drop. I have 2 volt LED's, so would I calculate this as actually having 3.5 volts per LED? If I would calculate the voltage drop so that it won't power that many LED's, but needs to be cut to keep from overpowering, could I run like 4 LED's, pulling a total of 8 watts, then i'd need to drop the voltage 6 volts? Therefore using around a 535 ohm resistor. This way doing it somewhat along the lines of

S
|
-R-L-L-L-L
| |
-R-L-L-L-L
| |
-R-L-L-L-L
| |
----------

(with the S being power supply, R being resistor, L being LED, and the - and | being the wire runs.)

I'd appreciate it!

Thanks,
-----
-Chris

0.1 Licorice Stick Black Rat
1.0 Black Rat
0.1 Vietnamese Blue Beauty
1.0 Green Tree Python
0.1 Texas Bairds Rat

The educated are the few. The uneducated are the masses.

North American Rat / Corn Snake Care Sheet

I've been playin around with these suckers tonight. Heck i got 100, i'm gonna use about 20, so i figured i have room to ruin a couple lol.

my power source is 4.8 volts DC. These each run at 1.8-2.0v. They burn nice and bright when connected at 2 in parallel. I was wondering how much life am i really going to be taking away if i ran them like this? I mean they'll probably only be on for 2 hours every couple nights. i'm mainly worried that if i hook up a resistor i'll be taking away so many volts that i'll have to put a lot more LED's in the cage to illuminate it.

Right now if I run 3 sets in series of 2 in parallel, it's plenty to illuminate a 4x2x2 cage at night.

Thanks,
-----
-Chris

0.1 Licorice Stick Black Rat
1.0 Black Rat
0.1 Vietnamese Blue Beauty
1.0 Green Tree Python
0.1 Texas Bairds Rat

The educated are the few. The uneducated are the masses.

North American Rat / Corn Snake Care Sheet