How exactly should an LED circuit be properly set up? Answered
I know LEDs need resistors or else they'll die out really fast.
The problem is, I'm having trouble figuring out how this needs to be done.
Lets say I take this LED:
White 70° Diffused 5mm LED:
Luminous Intensity: 690mcd typ. @ 20mA
Max Forward Current: 30mA
Pulse Current: 100mA for <= 10ms, duty <= 1/10
Forward Voltage: 3.6V typ. 4.0V max @ 20mA
Max Reverse Voltage: 5V
Power Dissipation: 120mW
Operating Temp: -30 to +85 C
Soldering Temp: 265 C for 10 secs
Max Reverse Current: 50uA @ 5V
ok so it has a current of 20mA and a forward voltage of 3.6V.
Now, If I wanted to power 6 of these with AA or AAA batteries How many would I need and what ohm resistors would I need?
It's been a long time since I took a class on electrical currents, and it was pretty basic.
Also, looking at the Reverse Voltage, what is that? Is that if I put the batteries in the opposite direction, i.e. Send the voltage INTO the - and out the + ends?
I've been researching this but its hard to find the right answer.
Lets say I'm making a basic serial circuit with the batteries here (lined up).