12.00 Volts to 10.00 Volts LED Bucker
Never a dull moment. Genuine 10 watt LED chips (they need a heatsink) are not 12.00 volts capable. Driven much higher than 10.00 volts, light output stays the same but heat increases as dramaticall...
Forum Discussion
90 lumens per watt is pretty poor, but I guess it's all about balancing efficiency with cost.
you mention running off non cyclic batteries, so are we talking one time use primary cells or just like a car starting battery? if it's one-time use, the SEPIC topology is really your friend, since it will suck that battery dry, assuming the current holds up.
might want to look into a flyback topology as well; google the joule thief... some people are doing crazy stuff with scaled up versions, like running compact-fluorescent bulbs from AA batteries.
you mention running off non cyclic batteries, so are we talking one time use primary cells or just like a car starting battery? if it's one-time use, the SEPIC topology is really your friend, since it will suck that battery dry, assuming the current holds up.
might want to look into a flyback topology as well; google the joule thief... some people are doing crazy stuff with scaled up versions, like running compact-fluorescent bulbs from AA batteries.
