luxlover
Banned
I am not sure what the downboy 917 circuit in my PR-T bezel, does to the voltage and the current levels coming out of the two batteries in my L4 body with a McE2S-60 tailcap switch?
To determine this myself, I did some basic multitester measurements of the bezel in both low and high levels. Keep in mind that these figures apply to the battery usage before the downboy's effect on the TYOJ Luxeon III in the bezel.....
Voltage (unloaded) = 5.99V
Voltage (low level) = 2.80V
Voltage (high level) = 4.82V
Current (low level) = 0.04A
Current (high level) = 0.98A
Wattage (low level) = 0.11W
Wattage (high level) = 4.72W
After removing the lens housing, I went as far as I could to measure the same parameters at the Luxeon emitter's tabs. I could only get the voltages across the emitter's tabs. To get current readings, I would have had to disconnect a wire from a Luxeon emitter's tab, and placed the ammeter leads in between the wire and the tab. This would have been far too risky for me, so I passed having just measured the voltages.....
Voltage across the emitter's tabs (low level) = 2.73V
Voltage across the emitter's tabs (high level) = 3.52V
I would have liked to find out the current drawn by the Luxeon at each level, so that I would then be able to determine the wattage that the Luxeon has been subjected to. I have read that the 60 ohm resistor board prevents the downboy from regulating the current at low level. That is why the battery voltage reading at low, is similar to the Luxeon's voltage reading at low. But notice that the Luxeon voltage at high, has dropped to 3.52V from a 4.82V at the batteries. I think that this is the downboy doing it's thing! I am not sure if the current, regulated by the downboy917, is exactly 0.917A? If it is, then the Luxeon at high, is being subjected to 3.52V x 0.917A = 3.22W. This is close enough to the Luxeon's rating, to make me feel safe.
To determine this myself, I did some basic multitester measurements of the bezel in both low and high levels. Keep in mind that these figures apply to the battery usage before the downboy's effect on the TYOJ Luxeon III in the bezel.....
Voltage (unloaded) = 5.99V
Voltage (low level) = 2.80V
Voltage (high level) = 4.82V
Current (low level) = 0.04A
Current (high level) = 0.98A
Wattage (low level) = 0.11W
Wattage (high level) = 4.72W
After removing the lens housing, I went as far as I could to measure the same parameters at the Luxeon emitter's tabs. I could only get the voltages across the emitter's tabs. To get current readings, I would have had to disconnect a wire from a Luxeon emitter's tab, and placed the ammeter leads in between the wire and the tab. This would have been far too risky for me, so I passed having just measured the voltages.....
Voltage across the emitter's tabs (low level) = 2.73V
Voltage across the emitter's tabs (high level) = 3.52V
I would have liked to find out the current drawn by the Luxeon at each level, so that I would then be able to determine the wattage that the Luxeon has been subjected to. I have read that the 60 ohm resistor board prevents the downboy from regulating the current at low level. That is why the battery voltage reading at low, is similar to the Luxeon's voltage reading at low. But notice that the Luxeon voltage at high, has dropped to 3.52V from a 4.82V at the batteries. I think that this is the downboy doing it's thing! I am not sure if the current, regulated by the downboy917, is exactly 0.917A? If it is, then the Luxeon at high, is being subjected to 3.52V x 0.917A = 3.22W. This is close enough to the Luxeon's rating, to make me feel safe.
