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 dramatically as lifespan decreases dramatically.
A realistic 2 volt drop (higher when batteries are being charged) is available by using series diodes.
A quandary. Christmas tree light string diodes or a DC to DC buck converter which is also a regulator.
But how nicely do DC to DC converters play at a 2.0 volt Delta T ??
Chinese manufacturers seem to be rather unclear on the subject.
"Work fine 12 volts 24 volts" But when I redirect specifically to the 12.00 volts to 10.00 volts question, it's either "So sorry don't know" or no response.
This question is not academic. "Properly" driven an LED can emit 95% of the light of a max driven chip but develop 80% of the heat. Heat means heat sink, and large heat sinks double or treble the price of a chip assembly.
Heat sinks are priced like diamonds. Go a little larger and WooWee.
Thanks for the input
EDIT
By the way, the light temperature of the 5K 10 watt chips is as close to sunlight as I have ever seen in an LED emitter. No pink or blue or yellow.
Driven much higher than 10.00 volts, light output stays the same but heat increases as dramatically as lifespan decreases dramatically.
A realistic 2 volt drop (higher when batteries are being charged) is available by using series diodes.
A quandary. Christmas tree light string diodes or a DC to DC buck converter which is also a regulator.
But how nicely do DC to DC converters play at a 2.0 volt Delta T ??
Chinese manufacturers seem to be rather unclear on the subject.
"Work fine 12 volts 24 volts" But when I redirect specifically to the 12.00 volts to 10.00 volts question, it's either "So sorry don't know" or no response.
This question is not academic. "Properly" driven an LED can emit 95% of the light of a max driven chip but develop 80% of the heat. Heat means heat sink, and large heat sinks double or treble the price of a chip assembly.
Heat sinks are priced like diamonds. Go a little larger and WooWee.
Thanks for the input
EDIT
By the way, the light temperature of the 5K 10 watt chips is as close to sunlight as I have ever seen in an LED emitter. No pink or blue or yellow.
