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How much batteri will I need?
well for my new project im gonna add 50 small diods, how much batteri will I need? Diod info: 1,6 - 2 V 20 mA 5mm Batteri info: A normal 9v batteri
well for my new project im gonna add 50 small diods, how much batteri will I need? Diod info: 1,6 - 2 V 20 mA 5mm Batteri info: A normal 9v batteri
Discussions
11 years ago
Thanks. Well thats all help I needed. Thanks alot!
11 years ago
THe time doesnt matter, will one 9v batteri make them all light?
Reply 11 years ago
yes, it well defiantly work but you'll need a resistor
Reply 11 years ago
Im not that good at this, what does a resistor do? XD and can I use any kind of resistor? where do I need to attach it?
Reply 11 years ago
ok, let's begin a resistor decreases the amount of power going to the LED, keeping the LED from burning out, you will need a 390 ohm resistor (orange gray brown gold) you can attach the resistor to the LED and then to the battery like in the picture, and conenct one side of the Resistor to a battery, the un-soldered side of the led to the battery
Reply 11 years ago
will I need a resistor to every led? and do I really need it? XD its alot more work, running to the store and soldering everything xD If I use a AA, will I still need the resistor?
Reply 11 years ago
also ill be using only 18 doides, what resistor will I need now? (awnser the other question aswell )
Reply 11 years ago
resistor 1 is 27 ohms resistor 2 is 220 ohm follow the picture
Reply 11 years ago
you can group them in groups of 3 leds / resistor (up to 4 - 5 leds / resistor if leds are really 1.6 - 2 V)
use this wizard to figure out what resistor to use and how to connect
http://led.linear1.org/led.wiz
Reply 11 years ago
a good one i think yes
11 years ago
diode
use a AA
they're cheaper and last longer
11 years ago
it depends how much time you want to get
my guess : 1 battery = 1 - 2 hours