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Step 2The Circuit
There really isn't much to this circuit, it's a very simple LED array. Each jar contains an array of 9 LEDs arranged in three strings of three LEDs and their resistor. See the screenshot of the LED array calculator* for a diagram. Each light is then connected in parallel to the power supply. Simples!
Since the forward voltage of these LEDs is 3.2v each, and we want to group them into threes, that's a total of 9.6v that needs to be dropped. I could have gone with a supply of 10v but I decided to go for 12v instead since it's a more common supply voltage.
* The LED array calculator can be found at http://led.linear1.org/led.wiz
Since the forward voltage of these LEDs is 3.2v each, and we want to group them into threes, that's a total of 9.6v that needs to be dropped. I could have gone with a supply of 10v but I decided to go for 12v instead since it's a more common supply voltage.
* The LED array calculator can be found at http://led.linear1.org/led.wiz
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