voltage stabilizer for led's. This led diode have 3v 20mA. Source can work between 10V to 14V. This construction is made for car purposes. Diodes can be changed to zener diode but then You need recalculate resistors.
"i did improvement by adding resistors 1K and 1K5R, that resistors are stabilising out going voltage that now mistake in voltage is 0.02V. Without that resistors mistake was 0.04V.
Also whole circuit is using much less power than before. "
Circuit is simulating discharge accu from car and when engine is turning on. This circuit have purpose to give light always shining with this same force.
I build circuit in real life, and is successful working. Transistors are not heated and curent is stable. Last transistor is to220 and need have little radiator or attached to something what will cull it down. Others parts are typical.
In my case I don't need radiator, but last transistor is attached to plastic, when I need stronger light or more diodes, then I must use radiator.
Power taken from this circuit use 10 times lower energy rather using normal bulb.
