alexan_e
Administrator
It is an opamp (operational amplifier), check post #16
R1=5K ohm
R2=1K ohm
R3=10 ohm
and the LED resistors are 1 ohm (other values can be used too), these resistors are used there to ensure that the current is equally shared between the leds, not to limit the current.
The current that will go to the leds is 80mA so if it is shared equally to 8 leds each one will get 10mA, if you want more or less then R1/R2 or R3 have to be changed.
Alex
R1=5K ohm
R2=1K ohm
R3=10 ohm
and the LED resistors are 1 ohm (other values can be used too), these resistors are used there to ensure that the current is equally shared between the leds, not to limit the current.
The current that will go to the leds is 80mA so if it is shared equally to 8 leds each one will get 10mA, if you want more or less then R1/R2 or R3 have to be changed.
Alex