LED series/parallel array wizard

The LED series/parallel array wizard is a calculator that will help you design large arrays of LEDs. The LED calculator was great for single LEDs--but when you have several, the wizard will help you arrange them in a series or combined series/parallel configuration. The wizard determines the current limiting resistor value for each portion of the array and calculates power consumed. All you need to know are the specs of your LEDs and how many you'd like to use.

Source voltage Help
diode forward voltage Help
diode forward current (mA) Help
number of LEDs in your array
View output as: ASCII schematic wiring diagram Help
help with resistor color codes


The wizard thinks your source voltage is pretty high. Take appropriate safety precautions please, and don't forget the fuse.

Solution 0: 46 x 1 array uses 46 LEDs exactly

+168V
+-|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--|>|--/\/\/\-+R = 1000 ohms
The wizard says: In solution 0:
  • each 1000 ohm resistor dissipates 400 mW
  • the wizard thinks 1W resistors are needed for your application Help
  • together, all resistors dissipate 400 mW
  • together, the diodes dissipate 2990 mW
  • total power dissipated by the array is 3390 mW
  • the array draws current of 20 mA from the source.

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