Tp 4056 module

Thread Starter

endlasuresh

Joined Feb 11, 2010
19

dcbingaman

Joined Jun 30, 2021
358
When LED's are in parallel, only one is likely to conduct as the V/I curves for even two identical part numbers will vary some. Or one may be brighter than the other. Here is the correct and incorrect way to light up two LEDs:

LED.PNG
 

Audioguru again

Joined Oct 21, 2019
3,550
A cheap Chinese flashlight has 24 LEDs in parallel. Someone at the factory has the boring job of testing the forward voltage of thousands of LEDs and grouping them so that each group has LEDs with the same forward voltage.
I have made many LED items with random LEDs that I grouped with the same forward voltages.
 

dcbingaman

Joined Jun 30, 2021
358
B
A cheap Chinese flashlight has 24 LEDs in parallel. Someone at the factory has the boring job of testing the forward voltage of thousands of LEDs and grouping them so that each group has LEDs with the same forward voltage.
I have made many LED items with random LEDs that I grouped with the same forward voltages.
Besides the fact that it saves some resistors, what is the benefit of doing it that way? I never tried that method.
 
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