I am doing a project with a high power led and i am using a 9V battery as the supply. The problem is, i designed the circuit to have almost 700 mA (670mA) to be exact and im only reading 300-330 mA...
I am using a 10W 9.1 ohm resistor which i measured to be 9.6 ohms.
i measured the battery and found it to be 9.68V.
all the components are brand new.
E= 9.68V
R= 9.6 Ohms
9.68V - 3.25Vf = 6.43V
I= E/R
6.43/9.6 = 670 mA....
why am i only measuring 330mA?
this is the led i have:
www.luxeonstar.com/Green-Lambertian-Rebel-125-lm-p/lxml-pm01-0070.htm
I am using a 10W 9.1 ohm resistor which i measured to be 9.6 ohms.
i measured the battery and found it to be 9.68V.
all the components are brand new.
E= 9.68V
R= 9.6 Ohms
9.68V - 3.25Vf = 6.43V
I= E/R
6.43/9.6 = 670 mA....
why am i only measuring 330mA?
this is the led i have:
www.luxeonstar.com/Green-Lambertian-Rebel-125-lm-p/lxml-pm01-0070.htm