Hello
My circuit 6led series 800mA x 3parallel (1A max P4 Seoul) PSU:constant current 24Vdc 2.5A. To each series add R2.2ohm seemed very big, any other idea? http://led.linear1.org/led.wiz
Please help if I want a circuit for over current protection ?
thank you

 

PSU:constant current 24Vdc 2.5A.
does not compute...

2.2 sounds right but you didn't specify the forward voltage drop of the LED, so it is rather hard to double check it.

 

Yes sorry not remmember 3.2V~4V Vf(forward Voltage) 1A max P4 Seoul 1A max,
My plan 3.65V 800mA , constant current driver : 24Vdc 2.5A