500 led's in parallel - Page 3 - Electronic Circuits Projects Diagrams Free

gmphadte · 2nd November 2004, 08:53 AM

LEDs are not very fuzzy about the current at which they light. however if u are worried of the reduced light due to the loaded battery, construct a transistorised zener and use it as a shunt regulator. The voltage should be the minimum the battery will attain in the worst case, and then do the series wiring as suggested above.
Set the LEd current to 90-95% of the max. current
U HAVE TO USE THE SERIES RESISTORS. IF U DON'T USE THEM, THEN U CAN APPLY FOR A PATENT.

checkmate · 4th November 2004, 01:19 AM

How come nobody asked how he is going to step-down a 10A 5V supply from a 12V source? :shock:
Anyway, I guess he got his answer already.

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2nd November 2004, 08:53 AM	(permalink)
gmphadte	LEDs are not very fuzzy about the current at which they light. however if u are worried of the reduced light due to the loaded battery, construct a transistorised zener and use it as a shunt regulator. The voltage should be the minimum the battery will attain in the worst case, and then do the series wiring as suggested above. Set the LEd current to 90-95% of the max. current U HAVE TO USE THE SERIES RESISTORS. IF U DON'T USE THEM, THEN U CAN APPLY FOR A PATENT.

4th November 2004, 01:19 AM	(permalink)
checkmate	How come nobody asked how he is going to step-down a 10A 5V supply from a 12V source? :shock: Anyway, I guess he got his answer already.