Well, my skills in electronic are very low. I'm thinking about a way to drive a luxeon 1W very efficiently. I want to use a buck converter and a PWM circuit. I would like to have some advice from knowledgeable people on this forum.
For a 6V battery, with a simple 8-Ohm resistor the luxeon draws 350 mAmp. If the luxeon is ON for 5hours the total draws from the battery is 1750 mAmp-hour.
If I can have a buck converter that draws 200 mAmp, this reduces the total consumption to 1000 mAmp.
With a PWM circuit and a duty cycle of 10%, the total current would be 100 mAmp. Less than 10% of the first design and the human eye will not see any difference. This way I think the battery will last longer.
This can be done for a 12-volt battery too. The current draws from the battery can be 100 mAmp with the buck converter, and with a PWM the current drawn from the battery would be 50 mAmp-hour.
Once again I'm just thinking efficiency, I don't know if it is possible to build such circuit. Anyways theses values would be higher than because of power lost in the components. I don't know if the 10% duty cycle is not too low.
Any comments about this idea.
For a 6V battery, with a simple 8-Ohm resistor the luxeon draws 350 mAmp. If the luxeon is ON for 5hours the total draws from the battery is 1750 mAmp-hour.
If I can have a buck converter that draws 200 mAmp, this reduces the total consumption to 1000 mAmp.
With a PWM circuit and a duty cycle of 10%, the total current would be 100 mAmp. Less than 10% of the first design and the human eye will not see any difference. This way I think the battery will last longer.
This can be done for a 12-volt battery too. The current draws from the battery can be 100 mAmp with the buck converter, and with a PWM the current drawn from the battery would be 50 mAmp-hour.
Once again I'm just thinking efficiency, I don't know if it is possible to build such circuit. Anyways theses values would be higher than because of power lost in the components. I don't know if the 10% duty cycle is not too low.
Any comments about this idea.