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This is the whole board, i doubt about external circuit to drive those led exist.
its "cheap scooter" not car LED that usually have buck/bost LED driver
Those red circle is to drive main LED
2 for lowbam and other 2 is on at high beam (total 4 led on)
Those Blue circle is only drive DRL...
Thank you for reply
I think V bat have a "wide range" voltage (commonly about 12-14.5V)
to drive them with 1/2 Vbat ?
How about AC or DC Halfwave feeding this circuit? because when SCR on, its remain on with "pure DC" right ?
many scooter have this configuration for headlamp (but using halogen...
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