I am trying to build a LED IR Array for a infrared camera for my comp ( I couldnt find a good forum for this so i just put it in here)
I am having trouble getting the right resistors for the project. I am using 12 volts because thats the only battery pack i could find and i am using 940 high intensity LEDs with a 1.28 voltage drop, they run on 29 mA and I am usign 10 of them __________________________________________________ ______
This is what it gives me on the Resistor calculator +12V
18Ω
GND
390Ω
The pic is kinda distorted sorry
You will need 1 x 18 ohms 1/8 watt and 1 x 390 ohms 1/2 watt resistors.
The 18 ohms resistor is color coded: Brown, Gray, Black, Gold.
The 390 ohms resistor is color coded: Orange, White, Brown, Gold.
Each 18 ohms resistor consumes 15.138 milliwatt.
Each 390 ohms resistor consumes 327.99 milliwatt.
Total power consumed by the resistors is 343.128 milliwatt.
Total power consumed by the LEDs is 371.2 milliwatt.
Total power consumed by the circuit is 714.328 milliwatt.
Total current drawn by the circuit is 58 milliampere.
The resistor values are calculated based on the common ±5% tolerance resistors.
Make sure to wire the LEDs in the correct direction as shown below.
Always leave some space for the resistors to breathe. They might get hot.
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