Dulimir
Member level 1
Hello,
Ive just joined up today so this is my first post. Ive done some stuff with electronics in highschool but that was a long time ago, so im having some truble.
Here is what im working on:
As you can see i have room for 60 LEDs. I want to use White LEDs that run at 3.2V and consume 20mA, and i want to run it all from a single or dual 9v standard battery pack (for example Duracell PP3). I was thinking i should connect the LEDs in 20 series of 3. People say it works, but im not sure how, as 3x3.2V is more than 9v (9.6V), and im not sure if i would need a resistor that way, would the LEDs be as bright as they should etc...
Ive also read about a thing called LM317, some kind of regulator... im clueless.
Any help would be greatly apreciated!
Cheers!
Ive just joined up today so this is my first post. Ive done some stuff with electronics in highschool but that was a long time ago, so im having some truble.
Here is what im working on:
As you can see i have room for 60 LEDs. I want to use White LEDs that run at 3.2V and consume 20mA, and i want to run it all from a single or dual 9v standard battery pack (for example Duracell PP3). I was thinking i should connect the LEDs in 20 series of 3. People say it works, but im not sure how, as 3x3.2V is more than 9v (9.6V), and im not sure if i would need a resistor that way, would the LEDs be as bright as they should etc...
Ive also read about a thing called LM317, some kind of regulator... im clueless.
Any help would be greatly apreciated!
Cheers!