Blue_Shift
Newly Enlightened
Are these the best for powering LS's with current regulation? If not what is better. And, how are they better than resistors? /ubbthreads/images/graemlins/confused.gif
MicroPuck and PowerPuck
- Thread starter Blue_Shift
- Start date
Regulated LED drivers always outperform ordinary resistors in battery-powered applications because the drivers usually include DC-DC converters that keep the feed to the LED fairly constant as the battery voltage drops. Where a direct-drive (simply LED + resistor + battery) setup may provide 3 hours of usable light off a pair of battery cells, the same LED driven by a DC-DC converter based regulator may squeeze an additional 1-2 hours. This also allows using lower battery voltages, like 3VDC (2x AA) to run LEDs than want 3.6VDC, since the regulator's stepping up the voltage.
IIRC, the pucks do a pretty good job of powering large LED arrays of single Luxeons, and present a decent usable life off fairly small power sources that aren't high enough voltage to run the LED(s) directly to begin with.
oO
IIRC, the pucks do a pretty good job of powering large LED arrays of single Luxeons, and present a decent usable life off fairly small power sources that aren't high enough voltage to run the LED(s) directly to begin with.
oO
I can run a 5W White SE off of a PowerPuck with 7.2V (from 2 Sony 18650 Li-Ions in series) as perfectly as I can off of 12V (from 8 AAs in series).
The flexibility's more preferred, at least for me, than it would be to calculate voltage drop and the resistors necessary to curtail current.
The flexibility's more preferred, at least for me, than it would be to calculate voltage drop and the resistors necessary to curtail current.
Darell
Flashaholic
Don't forget the BadBoys if you want something smaller.
