Hey guys...
just got them in and need to test just to make sure all are working and color
Thanks

 

9V battery with a 510 ohm resistor in series

 

or a bunch o' batteries hooked up to form about 3-3.5V

 

all right will the resistors that came with it be ok for the test period and can you show me a how to on the wiring cause im not very good with electronic Thanks

 

wire positive to positve.. and negative to negative?

i'm not sure what you're asking...

 

Hahaha....sorry my bad as in resistor where does that go positive or negative and also how do you tell the positive and negetive on the leds their so small and i can;t see if its labeled or not
thanks and sorry again

 

resistors dont care.. just put them in series wherever.

the leds.. have a notch on the cathode for the plccs

(maybe i should explain that cathode is the negative (-) side..)

 

Its easier if you have aligator clips leads lying around. Clip a lead to the positive of the battery and the negative of the battery. On one or the other (doesnt matter which) clip the other end to the resistor. You can clip a peice of wire into the other open lead to make it easier to contact the led. Then simply touch the positive lead to the anode (no notch) and the negative to the other side.

If you dont have clip leads then just do the same with whatever you have.

 

Or if you have a multimeter, most of them have a diode testing setting. Looks like an arrow pointing at a wall to the left most of the time. Just hook the negative lead to the notched side of the LED and the positive lead to the other side of the LED.

You can also use this method to trace the path of the circuit to find out where you have bad connections.

 

The diode check on most cheaper meters is fine for a standard silicone p/n junction (.7V) and sometimes up to par for a 1.2V junction, but typically will still show open on a 3.2V led. I usually just use a battery so I can see them light up.

 

I had the equipment, so I did it this way:

0 - 60 V power supply with 0 - 700 mA current limiter (showing 12 mA running through the LED at 1.9 V). I just put the multimeter around 2-ish volts, set the current limiter so I could get a decent amount of light, and voila!