hi, i'm a newbie just asking a simple question and maybe someone will help me to solve this problem
case:
1.orange/red/green 3mm LED getting hot while connected to 3v DC battery
2.orange/red/green (3-20 pieces) + white LED 3mm = white led get dim...
3.I need a scheme of orange+red+green+white LED with only 2x1.5v batteries
questions:
1.how many resistor (Ω)should I use to optimize the lights of orange,red,and green LED?(I already use the transistor calculator but have no idea..)
2.can I make all the LED turn on with one switch?(one button to turn ON all LED)with scheme pic pls?
sorry if my english is not correct and thx b4
case:
1.orange/red/green 3mm LED getting hot while connected to 3v DC battery
2.orange/red/green (3-20 pieces) + white LED 3mm = white led get dim...
3.I need a scheme of orange+red+green+white LED with only 2x1.5v batteries
questions:
1.how many resistor (Ω)should I use to optimize the lights of orange,red,and green LED?(I already use the transistor calculator but have no idea..)
2.can I make all the LED turn on with one switch?(one button to turn ON all LED)with scheme pic pls?
sorry if my english is not correct and thx b4