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Unique LED light chaser questions, w/ schematic 
electro-tech-online.com | by R2-D2 | Mon, Dec 29
electro-tech-online.com is the #4 Blogger for LED lamp
Can I use just one resistor for each group of LEDs (R7, R8 and R9) instead of one for each of the six branches in the LED groups?
If I need a resistor for each branch (of three LEDs), I have calculated them to be at 75Ω each. R = (1.8 volts dropped / 0.024 Amps) = 75Ω
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