filefox

??? I am trying to find out if say for a 4.5 volt circuit if you can use 2 diodes(0.7v) and a white led(3.2v) in series without problems. Is this good practice or a bad idea? that is, to use diodes instead of a resistor to drop the voltage. :P what are advantages/disadvantages. If i plug 2 white leds in parallel on one resistor? Is this a good idea? :o third what if on say 5 volts I put a red led(1.7) and a white(3.2) one in series what happens? how many mA would go through? ;D I am trying to get back into the hobby doing little projects but got stumped cause most everyone seems to put resistors etc. thanks for any clarifications ;)