If batt voltage is 12 - 14 v should I not connect 3 3.8v leds in series with the resistor, with the diode?
Correct me if im wrong but I looked at the 1n4148 spec sheet, at a graph and it says the that the voltage drop that occurs across the diode when 60 mA is flowing is 0.8v
so I a plan to run 3 parallel chains of series leds, resistors, and diodes, this is my calculation (forgive me if this is horrendously wrong).
13.8 (max v) - 3(3.8) - 0.8v = 1.6v
R = 1.6v / 0.02A = 80
hm:
so 3 * series chain =
3(0.02A) = 60mA
is this right?
thanks mate.