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z_KE6CVH
Guest
Hello, I am a retired Electronics Technician after 28yrs 3mo in the Navy. I am currently a DOD contractor working on medium satellite earth terminals in Afghanistan. I have homebrewing experience as an EXTRA class HAM for many years.
OK, now for the batteries I just purchased. I have 4ea ultracaps that are each 3,000MF at 2.7V. Dimensions are 61mm diameter X 138mm length each. Each unit is rated at 3.04Wh available energy or a total of over 12Wh energy. I am trying to either make 2 lights with 2ea or 1 light with 4ea of these ultracaps. One other requirement is to have a removable red lens on it.
Not sure if I should use HID or several LED's. My plan is to get an aluminum tube to house the ultracaps. I would be just fine with borrowing the head from an existing flashlight if it is possible to do so. These caps are larger in diameter than a D cell (34.2mm X 61.5mm). I would like to get a good regulator circuit to maximize the potential energy. I read in a white paper that if I run the ultracaps down to 1/2 voltage I will use up 75% of the available energy if this helps understand my working range for the input on the regulator. This project is in it's infancy so any help suggestions would be much appreciated. I don't necessarily have a dollar cap on the project but would like to keep it in the hundreds of dollars range (not including the already purchased ultracaps).
Best regards,
Mike
OK, now for the batteries I just purchased. I have 4ea ultracaps that are each 3,000MF at 2.7V. Dimensions are 61mm diameter X 138mm length each. Each unit is rated at 3.04Wh available energy or a total of over 12Wh energy. I am trying to either make 2 lights with 2ea or 1 light with 4ea of these ultracaps. One other requirement is to have a removable red lens on it.
Not sure if I should use HID or several LED's. My plan is to get an aluminum tube to house the ultracaps. I would be just fine with borrowing the head from an existing flashlight if it is possible to do so. These caps are larger in diameter than a D cell (34.2mm X 61.5mm). I would like to get a good regulator circuit to maximize the potential energy. I read in a white paper that if I run the ultracaps down to 1/2 voltage I will use up 75% of the available energy if this helps understand my working range for the input on the regulator. This project is in it's infancy so any help suggestions would be much appreciated. I don't necessarily have a dollar cap on the project but would like to keep it in the hundreds of dollars range (not including the already purchased ultracaps).
Best regards,
Mike
